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Path: /collins/r392/misc/

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Parent

12au7:

Tube Characteristics

Type:                   12AU7  (12AU7A/ECC82)

Bulb :                  Miniature T-6 1/2

Class :                 Dual Medium-Mu Triode

Base Diagram:           9A

Emitter Volts:          12.6    6.3

Emitter Amps:           0.15    0.3

Use:                    Class A1 Amp, Oscillator

Plate Dissipation (w):  2.75 per plate

Plate Volts:            100     250

Negative Grid Volts:    0       8.5

Plate Current (ma):     11.8    10.5

Plate Resistance (ohm): 6500    7700

Transconductance:       3100    2200  micromhos

Amplification (mu):     20      17

6aj5:

Tube Characteristics

Type:                   6AJ5

Bulb :                  T-5 1/2

Class :                 Pentode

Base Diagram:           7BD

Emitter Volts:          6.3

Emitter Amps:           0.175

Use:                    RF Amp

Plate Dissipation (w):  1.87

Plate Volts:            28

Negative Grid Volts:    1.0

Screen Volts:           28

Plate Current (ma):     2.7

Screen Current (ma):    1.0

Plate Resistance (ohm): 100K

Transconductance:       2500 micromhos

contr392:

                      R-392 Contract List

Data compiled by Tom Marcotte, N5OFF
Last update: January 01, 1998 

Manufacturer                      Year      Contract #    # Receivers
=====================================================================
Collins                           1951      3075-PH-51           1472
Collins                           1951      3150-PH-51           8114
Stewart Warner for Collins        1952      11653-PH-52          4670
Stromberg Carlson for Collins     1952      11653-PHILA-52-93    7580
Philco                            1959      3214-PP-59            688
Federal Mfg and Eng Corp.         1960      4096-PP-60            437
Dubrow Electronics Industries     1961      52713-PP-61          1087 
Western Electric                  1963      15283-PP-63          1553
Colonial                          ????      ?                       0
Decitron Electronics              ????      FR36-039-N-6-00081(E)   7
=====================================================================
                                            Total # Receivers:  25608

Many thanks to Tom for maintaining this list.&nbsp;  Over 700 receivers 
were "discovered" over the last year through his tracking of high 
serial numbers and contracts.

lube:

{\rtf1\ansi\deff0\deftab720{\fonttbl{\f0\fswiss MS Sans Serif;}{\f1\fdecor\fcharset2 Symbol;}{\f2\froman Times New Roman;}}
{\colortbl\red0\green0\blue0;}
\deflang1033\pard\plain\f2\fs20 Re: [R-390] R-392 Lubrication/Grease
\par  By Joe Foley @yahoo.com 
\par                                                              5:07pm
\par 
\par                                                                Mon
\par                                                                25
\par                                                                Jan
\par 
\par 
\par 
\par 
\par ---Jim Walker  wrote: 
\par   
\par   
\par 
\par     No, I did not.  Do you have a copy? 
\par     
\par 
\par +++++++++++++++++++++ 
\par   Nope, but what it amounts to is this:  
\par    
\par   Remove the Kc change knob and LOOSEN the nut behind it.  Rotate the 
\par   shaft by hand and let the bushing center itself then snug the nut back 
\par   up.  It should be able to move slightly if it has to. 
\par    
\par   One reason for this is that, if you notice, the Kc change knob is 
\par   centered between the handles, they also protect all of the knobs from 
\par   physical damage.  But since the Kc knob is so far away from the 
\par   handles it is an easy target.  One more thing to do while you're there 
\par   is to check the "run out" on that shaft to see if, or how badly, its 
\par   bent.  Mine shows some bend, the knob doesn't run true, so it can take 
\par   some without being a problem. 
\par    
\par   The shaft is mounted in three bushings which makes it tough to keep 
\par   all of them in perfect alignment, letting the front one "float" helps 
\par   smooth out the action. 
\par    
\par   Check the archives for Al Tirevold's treatise on transmission 
\par   lubrication, it has a bunch of details to consider. 
\par    
\par   Joe 
\par    
\par   _________________________________________________________ 
\par   DO YOU YAHOO!? 
\par   Get your free @yahoo.com address at  http://mail.yahoo.com  
\par    
\par }

r392conn:

R-392 Connectors

The R-392 receiver has three multi-pin connectors on the front panel. Two
are for audio and the third is for power and connection to the companion
T-195 transmitter.

The following charts describe the signals on each connector pin.

J101 and J102 (AUDIO)

The two AUDIO connectors are wired identically--the corresponding pins on
each are wired in parallel to allow either or both to be used with
loudspeaker, headset, and/or microphone.

 PinSignal                       Description
                                 This is the 600 ohm output from the
 A  AF output                    receiver and is the same as pin L and
                                 J103 pin H.
 B  Ground
                                 This signal is not used by the receiver
 C  Microphone                   but is passed to the transmitter via J103
                                 pin C.
 D  No connection
 E  Ground
                                 This signal is not used by the receiver
 F  Push to talk switch on       but is passed to the transmitter via J103
    microphone or Key
                                 pin F.
 H  Ground
 J  No connection
                                 This signal is also available at J103 pin
 K  Carrier relay control        K and is grounded by the receiver when
                                 the audio output is not squelched.
                                 This is the 600 ohm output from the
 L  AF output                    receiver and is the same as pin A and
                                 J103 pin H.

J103 (POWER INPUT - TRANS CONT)

The J103 connector is used to provide power to the R-392 receiver and to
provide control of the optional companion T-195 transmitter.
 PinSignal                      Description

 A  28 V B+ (Positive voltage)  This powers the tube plates. The current
                                requirement is 0.5 A.
                                This signal is provided by the transmitter
                                to engage relays in the receiver to
                                disable the audio output and antenna input
 B  Break-in relay control      when transmitting. This signal is ignored
                                when the receiver Function switch is in
                                the NET position to allow simultaneous use
                                of the transmitter and receiver.

 C  Microphone                  Provided to the transmitter from pin C on
                                the AUDIO connectors.

 D  28 V Filament (Positive     This supplies the tube filaments and draws
    voltage)                    approximately 2.5 A.
 E  Ground

 F  Push to talk switch on      Passed to the transmitter from pin F on
    microphone or Key           the AUDIO connectors.
                                This is the 600 ohm audio output from the
 H  AF output                   receiver and is common with pins A and L
                                on the AUDIO connectors.
 J  No connection
                                This signal is also available at pin K on
 K  Carrier relay control       the AUDIO connector and is grounded by the
                                receiver when the audio output is not
                                squelched.

Standalone operation

When operating the R-392 receiver not connected to a T-195 transmitter
supply power the receiver as follows.

 +28 V at 3 AJ103 pins A and D
 Ground      J103 pin E

r392tu~1:

R-392 Tubes

The R-392 receiver contains 25 tubes of six types. The following table
shows the function and type of each tube, the total number of each type,
and number of each type in the running spares kit.

 ID    Function          26A6 26A7/GT 26C626D6 12AU7 6AJ5
 V201  1st RF Amp        26A6
 V202  2nd RF Amp        26A6
 V203  1st Mixer                      26C6
 V204  2nd Mixer                      26C6
 V401  1st Xtal Osc                                  6AJ5
 V402  2nd Xtal Osc                                  6AJ5
 V501  1st IF Amp        26A6
 V502  2nd IF Amp        26A6
 V503  3rd IF Amp        26A6
 V504  4th IF Amp        26A6
 V505  5th IF Amp        26A6
 V506  6th IF Amp        26A6
 V601A IF Cath. Foll.
 V601B 1st RF AGC Rect.                        12AU7
 V602A RF & IF AGC Rect.
 V602B Squelch Rect.                           12AU7
 V603A Detector
 V603B Noise Limiter                           12AU7
 V604  BFO               26A6
 V605  Squelch Control                               6AJ5
 V606  1st AF Amp                                    6AJ5
 V607  Phase Inverter                                6AJ5
 V608A
 V608B 2nd AF Amp             26A7/GT                6AJ5
 V609  AGC IF Amp        26A6
 V701  Multivibrator                           12AU7
 V702  200 KC Xtal Osc   26A6
 V703A Harmonic Amp
 V703B Distorter                               12AU7
 V801  VFO-Mixer                          26D6

 Total                   11   1       2   1    5     5
 Spares                  4    2       2   1    2     10
                         26A6 26A7/GT 26C626D6 12AU7 6AJ5

Additional spares

Besides tubes, the running spares kit also contains:

   * 2 lamps, dial, 28 volts, 0.175 ampere, GE T-3 1/4 [GE 313]
   * 6 fuses, 1/2 ampere, type 3AG
   * 6 fuses, 5 ampere, type 3AG

specs:

From the tech manual:

5.  Technical Characteristics

Type of Circuit...      Triple conversion superheterodyne on eight
                        lowest frequency bands, double conversion
                        superheterodyne on all other bands.

Frequency Range...      500 kc to 32 mc in 32 bands of 1 mc each
                        except the first band which covers 1/2 mc
                        (500 kc to 1 mc).

Types of signals...     A1-cw, A2-mcw, A3-voice, F1-FSK

Number of tubes...      25

IF Frequencies:

First variable IF
(8 lowest bands)....    9 to 18 mc.

Second variable IF
(all bands)....         2.5-2.0 mc on 0.5-1.0 mc band;
                        3 to 2 mc on all other bands.

Third IF (fixed)...     455 kc

Selectivity.....        8, 4, and 2 kc IF (nominal) bandwidths.

Type of Tuning...       Continuous; frequency read directly on
                        counter type frequency indicator.

Method of Calibration   Built-in crystal calibrator.

Calibration points...   Every 100 kc

Calibration accuracy    Within 300 cps at any frequency in 100 kc
                        range (50 kc each side of 100 kc point)
                        when calibrated at nearest 100 kc point
                        to the received signal.

Sensitivity:
   Modulated Signals    FREQ           AM Signals
                        0.5-1 mc        9 microvolts or better
                        1.0-2.0 mc      7 microvolts or better
                        2.0-32 mc       5 microvolts or better

                        (for 10 milliwatts ouptu with 10 to 1
                        signal plus noise to noise ratio and with
                        a 56 micromicro farad dummy antenna)

   CW Signals           0.5-2.0 mc      3 microvolts or better
                        2.0-32.0 mc     2 microvolts or better

                        (for 10 milliwatts ouptu with 10 to 1
                        signal plus noise to noise ratio, carrier
                        on to carrier off) and with a 56 micromicro
                        farad dummy antenna)

Audio power output
(600 ohm impedance)     200 mw (nominal)

Nominal input voltage   28 volts dc;  will operate with input of
                        25-30 volts; will operate at reduced gain
                        at input voltages lower than 25 volts dc
                        down to a minimum of 22 volts dc.

Power input...          3 amperes at 28 volts.

Antennas:               Whip...         15 feet
                        Long wire       Random length

Height                  11 1/2 inches   (29.2 cm)
Width                   11 inches       (27.9 cm)
Depth                   14 1/8 inches   (34.6 cm)
Weight                  52 pounds       23.6 kilograms

stageg~1:

STAGE GAIN CHARTS

Ref:    Para 104, R-392 Manual

Connect VTVM or DVM between the diode load (red test jack J615) and ground. 
Connect signal generator output to antenna (via 50 micro-micro farad cap) or
to internal points (via .05 microfarad cap); ensure sig gen ground is also connected
to receiver ground.  Table signal generator voltages are the minimum and maximum
sig gen output required to generate -2.5 volts across the diode load.

RF Subchassis Stages.
---------------------------------------------------------------------------------------
Signal generator connection point       Frequency (MC)  Sig Gen output (microvolts)
---------------------------------------------------------------------------------------
ANT binding post, E101                  0.5 to 32               1 to 4
Test Point E201 (grid of V201)          0.5 to 32               3 to 7
Test Point E202 (grid of V202)          0.5 to 32               3 to 7
Test Point E203 (grid of V203)          0.5 to 8                25 to 45
Test Point E204 (grid of V204)          8 to 32                 20 to 35
Test Point J808 (grid of V801)          3 to 2                  40 to 70
---------------------------------------------------------------------------------------

IF Subchassis Stages.  (Generator set to 455 KHz)
---------------------------------------------------------------------------------------
Sig Gen                       Sig Gen output (microvolts)
Connection Point        2 KC BW         4 KC BW         8 KC BW
--------------------------------------------------------------------
Grid of V501            130-180
Grid of V502            3300-6000       3200-5900       2900-5700
Grid of V503            24000-41000     28000-45000     22000-38000
Grid of V504            25000-40000     25000-40000     23000-37000
Grid of V505            22000-34000     22000-32000     25000-35000
Grid of V506            50000-70000     50000-70000     50000-70000
--------------------------------------------------------------------

trans1:

R-390] AF matching transformers
 By Steve Murphy@flyingbeers.org 
                                                             


Just an FYI, I was in a local electronics store last week and noticed that they had some line
matching transformers designed for PA use which could be tapped to match a variety of
impedances to 8 or 4 ohms.  The 
closest tap to 600 ohms was 500, so it wasn't a perfect match, but close enough.  So, there
are readily available over-the-counter transformers 
available that'll work with the '390 and other 600 ohm output rigs.  
  
  
--- 
Submissions  r-39-@qth.net

trouble:

        TROUBLE-SHOOTING CHART

        Reference:  Para 97, R-392 Manual   (paraphrased for brevity)

Organization:   Symptom
                Probable Trouble
                Corrective Action
 ============================================================================
 1.  Function to NORMAL, Dial Dim to ON, Receiver does not operate,
     dial lamp does not light.

     Open LINE fuse 5 AMP, F102 on front panel

     Replace fuse.  If it blows again, check filament circuit 
     for shorts.  Check power connections.
----------------------------------------------------------------------------
2.   Dial lamps light but CARRIER LEVEL meter pointer does not 
     deflect w/ AGC switch set to ON, no reception.

     No B+ voltage. Open PLATE fuse, 1/2 AMP, F101 on front panel.

     Replace fuse.  If it blows again, test B+ circuit for shorts (fig. 51)
------------------------------------------------------------------------------
3.   No receiver output.  Carrier level meter rises and dips as
     KILOCYCLES control in operated.

     Defect in signal circuit after 2nd IF AMP.

     Connect headphones with 0.1 microfarad cap across grid and plate
     circuits of successive audio stages, or use stage gain charts (par. 99)
     Test tube of defective stage, check voltages and then resistance within stage.
---------------------------------------------------------------------------------
4.   AF circuits ok, but no signal output with 455 KC sig gen is applied to IF input
     (J510)

     Faulty IF amplifier stage.

     Test IF stages by signal substitution (par. 101); test tubes; localize with
     voltage and resistance checks if necessary.
------------------------------------------------------------------------------------
5.   IF circuits respond to 455 KC signal, still no station received.

     Faulty mixer, oscillator, or RF stage.

     Test mixer, RF and oscillator states by signal substitution (par. 102)
----------------------------------------------------------------------------------
6.   No beat frequency when BFO switch is on and BFO PITCH is varied.

     Faulty BFO circuit.

     Test tube V604; test voltages, check BFO switch and BFO pitch control(C101) .
-----------------------------------------------------------------------------------
7.   No calibration signal when AGC switch set to CAL.  Cal signal does not appear
     approx every 100 KC.

     Defective calibration oscillator or vfo-mixer stage.

     Test tubes V701, V702, V703.  Test crystal Y701.  Check voltages and resistances
     of cal oscillator and VFO (V801).
-----------------------------------------------------------------------------------
8.   Weak Signal

     Weak tubes, low voltage

     Test tubes; test input voltage; check B+ voltage.  Check for shorted or open
     capacitors, check gain of each stage.  Last resort: align tuning circuits.
---------------------------------------------------------------------------------
9.   Noisy receiver.

     Noisy antenna location.  Poor connection or shorting elements within a tube.

     Short-circuit antenna to ground, if noise reduced was external.
     Check antenna and internal signal cables and connectors.
     Use insulated prod to tap each tube, replace ones which generate noise with tap.
----------------------------------------------------------------------------------
10.  Receiver output noisy when controls are operated.

     Dirty switch contacts, potentiometers, etc.

     Clean switch contacts; clean or replace controls.
--------------------------------------------------------------------------------
11.  Distorted signal, or blocking with strong signals.

     Weak tube; incorrect voltage on tube; leaky capacitors, esp C623 and
     C626.  No AGC voltage.

     Chekc all tubes.  Check AGC voltages.  Check plate voltages and resistances.
---------------------------------------------------------------------------------
12.  Function switch to SQ (squelch), RF GAIN/SQUELCH THRESH at low gain setting,
     noise is heard between stations/signals when KILOCYCLES control is tuned.

     Faulty squelch circuit.

     Check V602, V609, V 605.  If a click is heard as KILOCYCLES is rotated,
     check relay K601.
---------------------------------------------------------------------------------

vrtable:

VOLTAGE AND RESISTANCE MEASUREMENTS

Ref:    TM858-71, Figs 74 and 75

NOTE:  VOLTAGE is measured with receiver ON
       RESISTANCE measured with receiver OFF, power disconnected

       1. 28 VDC power input
       2. FUNCTION switch at NORMAL
       3. RF GAIN and AF GAIN at max clockwise position
       4. Tuning controls to 2.000 MHz
       5. Voltages/Resistances measured to ground w/ VTVM
       6. Headphones, antenna and ground disconnected
       7. Resistances in ohms
       8. Resistance measurements with tubes IN sockets.
       9. NC == no connection
      10. AGC switch at OFF position
      11. * indicates BFO ON, FUNCTION at SQ, AGC to CAL
      12. "A" depends on IF GAIN BIAS ADJUST SETTING
      13. DIAL DIM to ON

====================================
V201    26A6    1st RF AMPLIFIER
------------------------------------
PIN     VOLTAGE         RESISTANCE
1       -.77            3.3 meg
2       .21             18
3       0               0
4       28              2.3
5       25.7            1075
6       25.7            1075
7       .21             18
------------------------------------

====================================
V202    26A6    2nd RF AMPLIFIER
------------------------------------
PIN     VOLTAGE         RESISTANCE
1       -.82            3.4 meg
2       .05             19
3       0               0
4       28              2.4
5       25.7            1075
6       25.7            1075
7       .05             18
------------------------------------

====================================
V203    26C6    1st MIXER
------------------------------------
PIN     VOLTAGE         RESISTANCE
1       -.08            100K
2       1.8             3.2K
3       0               0
4       28              3.2
5       NC              NC
6       NC              NC
7       26.7            1050
------------------------------------

====================================
V204    26C6    2nd MIXER
------------------------------------
PIN     VOLTAGE         RESISTANCE
1       -.04            100K
2       1.8             3.3K
3       0               0
4       28              3.2
5       NC              NC
6       NC              NC
7       26.7            1180
------------------------------------

====================================
V401    6AJ5    1st Crystal Oscillator
------------------------------------
PIN     VOLTAGE         RESISTANCE
1       -1.5            100K
2       .1              10
3       12              10
4       6               2
5       28              1200
6       28              1200
7       .1              10
------------------------------------

====================================
V402    6AJ5    2nd CRYSTAL OSCILLATOR
------------------------------------
PIN     VOLTAGE         RESISTANCE
1       -1.5            100K
2       .1              10
3       6               2
4       0               0
5       28              1200
6       28              1200
7       .1              10
------------------------------------

====================================
V501    26A6    1st IF AMPLIFIER
------------------------------------
PIN     VOLTAGE         RESISTANCE
1       -.8             4.5 meg
2       0               0
3       28              2.6
4       0               0
5       24.5            1K
6       24.5            1K
7       0               8
------------------------------------

====================================
V502    26A6    2nd IF AMPLIFIER
------------------------------------
PIN     VOLTAGE         RESISTANCE
1       -.4             4.5 meg
2       0               0
3       28              2.6
4       0               0
5       26.5            1K
6       26.5            1K
7       .8              6
------------------------------------

====================================
V503    26A6    3rd IF AMPLIFIER
------------------------------------
PIN     VOLTAGE         RESISTANCE
1       0               2.2 meg
2       0               0
3       28              2.6
4       0               0
5       26.5            1K
6       26.5            1K
7       3.6             10K
------------------------------------

====================================
V504    26A6    4th IF AMPLIFIER
------------------------------------
PIN     VOLTAGE         RESISTANCE
1       0               2.2 meg
2       0               0
3       28              2.6
4       0               0
5       26.2            1K
6       26.2            1K
7       3.6             10.2K
------------------------------------

====================================
V505    26A6    5th IF AMPLIFIER
------------------------------------
PIN     VOLTAGE         RESISTANCE
1       0               2.2 meg
2       2.9             8K
3       28              2.6
4       0               0
5       26.5            1K
6       26.5            1K
7       2.9             8K
------------------------------------

====================================
V506    26A6    6th IF AMPLIFIER
------------------------------------
PIN     VOLTAGE         RESISTANCE
1       -.9             2.2 meg
2       0               0
3       28              2.6
4       0               0
5       24.5            1K
6       24.5            1K
7       0               0
------------------------------------

====================================
V601    12AU7   IF CATHODE FOLLOWER
                1st RF AGC RECTIFIER
------------------------------------
PIN     VOLTAGE         RESISTANCE
1       0               1 meg
2       0               1 meg
3       27 (5.5*)       1.8K
4       28              2.6
5       14              12
6       26.5            2.5
7       -.1             2.2 meg
8       .6              520
9       21              12
------------------------------------

====================================
V602    12AU7   SQUELCH RECTIFIER
                IF AGC RECTIFIER
------------------------------------
PIN     VOLTAGE         RESISTANCE
1       -.98            2.5 meg
2       -.98            2.5 meg
3       0               0
4       28              2.6
5       14.2            13
6       0               1 meg
7       0               1 meg
8       27 (5.5*)       1.8K
9       21              12
------------------------------------

====================================
V603    12AU7   DETECTOR-NOISE LIMITER
------------------------------------
PIN     VOLTAGE         RESISTANCE
1       -.5             120K
2       -.5             120K
3       0               1.4
4       14.2            13
5       0               0
6       -.6             470K
7       -.6             470K
8       .2              560K
9       6.6             12
------------------------------------

====================================
V604    26A6    BEAT FREQUENCY OSC
------------------------------------
PIN     VOLTAGE         RESISTANCE
1       -.8 (-1.45*)    1.5 meg
2       0               0
3       28              2.6
4       0               0
5       0 (25.5*)       inf (1K*)
6       0 (28*)         inf (1K*)
7       0               .2
------------------------------------

====================================
V605    6AJ5    SQUELCH CONTROL
------------------------------------
PIN     VOLTAGE         RESISTANCE
1       -.3 (-1.1*)     1.5 meg
2       0               inf (0*)
3       6.3             2.6
4       0               0
5       28              9K
6       28              2.6
7       0               inf ((0*)
------------------------------------

====================================
V606    6AJ5    1st AF AMPLIFIER
------------------------------------
PIN     VOLTAGE         RESISTANCE
1       -1.1            10 meg
2       0               0
3       14              5.2
4       6               2.6
5       11.4            22
6       14.5            47K
7       0               0
------------------------------------

====================================
V607    6AJ5    PHASE INVERTER
------------------------------------
PIN     VOLTAGE         RESISTANCE
1       3.65            2.2 meg
2       5.2             10K
3       6               2.5
4       0               0
5       21              10K
6       21              10K
7       5.2             10K
------------------------------------

====================================
V608    26A7GT  2nd AF AMPLIFIER
------------------------------------
PIN     VOLTAGE         RESISTANCE
1       -.25            470K
2       0               0
3       -.25            470K
4       28              1800
5       28              1800
6       28              2.6
7       0               0
8       28              1800
------------------------------------

====================================
V609    26A6    AGC IF AMPLIFIER
------------------------------------
PIN     VOLTAGE         RESISTANCE
1       0               2.2 meg
2       0               0
3       28              2.6
4       0               0
5       26.5            1000
6       26.5            1000
7       0               0
------------------------------------

====================================
V701    12AU7   MULTIVIBRATOR
------------------------------------
PIN     VOLTAGE         RESISTANCE
1       26.5 (20.5*)    12K
2       0 (3.1*)        120K
3       15 (0*)         inf (0*)
4       28              2.6
5       14              12
6       26.5 (21.5*)    4700
7       0 (3.4*)        120K
8       XXX (0*)        inf (0*)
9       21.5            12
------------------------------------

====================================
V702    26A6    200KC Crystal OSC
------------------------------------
PIN     VOLTAGE         RESISTANCE
1       0 (4.1*)        1 meg
2       15 (0*)         inf (0*)
3       28              2.6
4       0               0
5       26.5 (22*)      10K
6       26.5 (18*)      47K
7       15 (0*)         inf (0*)
------------------------------------

====================================
V703    12AU7   HARMONIC AMP/DISTORTER
------------------------------------
PIN     VOLTAGE         RESISTANCE
1       26.5 (12*)      12K
2       0               8
3       15 (0*)         inf (0*)
4       14              12
5       0               0
6       26.5 (23.5*)    12K
7       0 (-3*)         100K
8       15 (0*)         inf (0*)
9       7               12
------------------------------------

====================================
V801    26D6    VFO MIXER
------------------------------------
PIN     VOLTAGE         RESISTANCE
1       -1.8            80K
2       0               0
3       28              3.8
4       0               0
5       28              38
6       28              35
7       0               3.6
------------------------------------

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I believe in one God, the Father almighty, maker of heaven and earth, of all things visible and invisible. I believe in one Lord Jesus Christ, the Only Begotten Son of God, born of the Father before all ages. God from God, Light from Light, true God from true God, begotten, not made, consubstantial with the Father; through him all things were made. For us men and for our salvation he came down from heaven, and by the Holy Spirit was incarnate of the Virgin Mary, and became man. For our sake he was crucified under Pontius Pilate, he suffered death and was buried, and rose again on the third day in accordance with the Scriptures. He ascended into heaven and is seated at the right hand of the Father. He will come again in glory to judge the living and the dead and his kingdom will have no end. I believe in the Holy Spirit, the Lord, the giver of life, who proceeds from the Father and the Son, who with the Father and the Son is adored and glorified, who has spoken through the prophets. I believe in one, holy, catholic and apostolic Church. I confess one baptism for the forgiveness of sins and I look forward to the resurrection of the dead and the life of the world to come. Amen. With firm faith, I also believe everything contained in the word of God, whether written or handed down in Tradition, which the Church, either by a solemn judgment or by the ordinary and universal Magisterium, sets forth to be believed as divinely revealed. I also firmly accept and hold each and everything definitively proposed by the Church regarding teaching on faith and morals. Moreover, I adhere with religious submission of will and intellect to the teachings which either the Roman Pontiff or the College of Bishops enunciate when they exercise their authentic Magisterium, even if they do not intend to proclaim these teachings by a definitive act. . From her very beginning, the Church has professed faith in the Lord, crucified and risen, and has gathered the fundamental contents of her belief into certain formulas. The central event of the death and resurrection of the Lord Jesus, expressed first in simple formulas and subsequently in formulas that were more developed,1 made it possible to give life to that uninterrupted proclamation of faith, in which the Church has handed on both what had been received from the lips of Christ and from his works, as well as what had been learned "at the prompting of the Holy Spirit".2 The same New Testament is the singular witness of the first profession proclaimed by the disciples immediately after the events of Easter: "For I handed on to you as of first importance what I also received: that Christ died for our sins in accordance with the Scriptures; that he was buried; that he was raised on the third day in accordance with the Scriptures; that he appeared to Cephas, then to the Twelve".3 2. In the course of the centuries, from this unchangeable nucleus testifying to Jesus as Son of God and as Lord, symbols witnessing to the unity of the faith and to the communion of the churches came to be developed. In these, the fundamental truths which every believer is required to know and to profess were gathered together. Thus, before receiving Baptism, the catechumen must make his profession of faith. The Fathers too, coming together in Councils to respond to historical challenges that required a more complete presentation of the truths of the faith or a defense of the orthodoxy of those truths, formulated new creeds which occupy "a special place in the Church's life"4 up to the present day. The diversity of these symbols expresses the richness of the one faith; none of them is superseded or nullified by subsequent professions of faith formulated in response to later historical circumstances. 3. Christ's promise to bestow the Holy Spirit, who "will guide you into all truth", constantly sustains the Church on her way.5 Thus, in the course of her history, certain truths have been defined as having been acquired though the Holy Spirit's assistance and are therefore perceptible stages in the realization of the original promise. Other truths, however, have to be understood still more deeply before full possession can be attained of what God, in his mystery of love, wished to reveal to men for their salvation.6 In recent times too, in her pastoral care for souls, the Church has thought it opportune to express in a more explicit way the faith of all time. In addition, the obligation has been established for some members of the Christian faithful, called to assume particular offices in the community in the name of the Church, to publicly make a profession of faith according to the formula approved by the Apostolic See.7 4. This new formula of the Professio fidei restates the Nicene-Constantinopolitan Creed and concludes with the addition of three propositions or paragraphs intended to better distinguish the order of the truths to which the believer adheres. The correct explanation of these paragraphs deserves a clear presentation, so that their authentic meaning, as given by the Church's Magisterium, will be well understood, received and integrally preserved. In contemporary usage, the term 'Church' has come to include a variety of meanings, which, while true and consistent, require greater precision when one refers to the specific and proper functions of persons who act within the Church. In this area, it is clear that, on questions of faith and morals, the only subject qualified to fulfil the office of teaching with binding authority for the faithful is the Supreme Pontiff and the College of Bishops in communion with him.8 The Bishops are the "authentic teachers" of the faith, "endowed with the authority of Christ",9 because by divine institution they are the successors of the Apostles "in teaching and in pastoral governance": together with the Roman Pontiff they exercise supreme and full power over all the Church, although this power cannot be exercised without the consent of the Roman Pontiff.10 5. The first paragraph states: "With firm faith, I also believe everything contained in the word of God, whether written or handed down in Tradition, which the Church, either by a solemn judgement or by the ordinary and universal Magisterium, sets forth to be believed as divinely revealed". The object taught in this paragraph is constituted by all those doctrines of divine and catholic faith which the Church proposes as divinely and formally revealed and, as such, as irreformable.11 These doctrines are contained in the word of God, written or handed down, and defined with a solemn judgement as divinely revealed truths either by the Roman Pontiff when he speaks 'ex cathedra,' or by the College of Bishops gathered in council, or infallibly proposed for belief by the ordinary and universal Magisterium. These doctrines require the assent of theological faith by all members of the faithful. Thus, whoever obstinately places them in doubt or denies them falls under the censure of heresy, as indicated by the respective canons of the Codes of Canon Law.12 6. The second proposition of the Professio fidei states: "I also firmly accept and hold each and everything definitively proposed by the Church regarding teaching on faith and morals". The object taught by this formula includes all those teachings belonging to the dogmatic or moral area,13 which are necessary for faithfully keeping and expounding the deposit of faith, even if they have not been proposed by the Magisterium of the Church as formally revealed. Such doctrines can be defined solemnly by the Roman Pontiff when he speaks 'ex cathedra' or by the College of Bishops gathered in council, or they can be taught infallibly by the ordinary and universal Magisterium of the Church as a 'sententia definitive tenenda'.14 Every believer, therefore, is required to give firm and definitive assent to these truths, based on faith in the Holy Spirit's assistance to the Church's Magisterium, and on the Catholic doctrine of the infallibility of the Magisterium in these matters.15 Whoever denies these truths would be in a position of rejecting a truth of Catholic doctrine16 and would therefore no longer be in full communion with the Catholic Church. 7. The truths belonging to this second paragraph can be of various natures, thus giving different qualities to their relationship with revelation. There are truths which are necessarily connected with revelation by virtue of an historical relationship, while other truths evince a logical connection that expresses a stage in the maturation of understanding of revelation which the Church is called to undertake. The fact that these doctrines may not be proposed as formally revealed, insofar as they add to the data of faith elements that are not revealed or which are not yet expressly recognized as such, in no way diminishes their definitive character, which is required at least by their intrinsic connection with revealed truth. Moreover, it cannot be excluded that at a certain point in dogmatic development, the understanding of the realities and the words of the deposit of faith can progress in the life of the Church, and the Magisterium may proclaim some of these doctrines as also dogmas of divine and catholic faith. 8. With regard to the nature of the assent owed to the truths set forth by the Church as divinely revealed (those of the first paragraph) or to be held definitively (those of the second paragraph), it is important to emphasize that there is no difference with respect to the full and irrevocable character of the assent which is owed to these teachings. The difference concerns the supernatural virtue of faith: in the case of truths of the first paragraph, the assent is based directly on faith in the authority of the word of God (doctrines de fide credenda); in the case of the truths of the second paragraph, the assent is based on faith in the Holy Spirit's assistance to the Magisterium and on the Catholic doctrine of the infallibility of the Magisterium (doctrines de fide tenenda). 9. The Magisterium of the Church, however, teaches a doctrine to be believed as divinely revealed (first paragraph) or to be held definitively (second paragraph) with an act which is either defining or non-defining. In the case of a defining act, a truth is solemnly defined by an 'ex cathedra' pronouncement by the Roman Pontiff or by the action of an ecumenical council. In the case of a non-defining act, a doctrine is taught infallibly by the ordinary and universal Magisterium of the Bishops dispersed throughout the world who are in communion with the Successor of Peter. Such a doctrine can be confirmed or reaffirmed by the Roman Pontiff, even without recourse to a solemn definition, by declaring explicitly that it belongs to the teaching of the ordinary and universal Magisterium as a truth that is divinely revealed (first paragraph) or as a truth of Catholic doctrine (second paragraph). Consequently, when there has not been a judgement on a doctrine in the solemn form of a definition, but this doctrine, belonging to the inheritance of the depositum fidei, is taught by the ordinary and universal Magisterium, which necessarily includes the Pope, such a doctrine is to be understood as having been set forth infallibly.17 The declaration of confirmation or reaffirmation by the Roman Pontiff in this case is not a new dogmatic definition, but a formal attestation of a truth already possessed and infallibly transmitted by the Church. 10. The third proposition of the Professio fidei states: "Moreover, I adhere with religious submission of will and intellect to the teachings which either the Roman Pontiff or the College of Bishops enunciate when they exercise their authentic Magisterium, even if they do not intend to proclaim these teachings by a definitive act". To this paragraph belong all those teachings – on faith and morals – presented as true or at least as sure, even if they have not been defined with a solemn judgement or proposed as definitive by the ordinary and universal Magisterium. Such teachings are, however, an authentic expression of the ordinary Magisterium of the Roman Pontiff or of the College of Bishops and therefore require religious submission of will and intellect.18 They are set forth in order to arrive at a deeper understanding of revelation, or to recall the conformity of a teaching with the truths of faith, or lastly to warn against ideas incompatible with those truths or against dangerous opinions that can lead to error.19 A proposition contrary to these doctrines can be qualified as erroneous or, in the case of teachings of the prudential order, as rash or dangerous and therefore 'tuto doceri non potest'.20 11. Examples. Without any intention of completeness or exhaustiveness, some examples of doctrines relative to the three paragraphs described above can be recalled. To the truths of the first paragraph belong the articles of faith of the Creed, the various christological dogmas21 and marian dogmas;22the doctrine of the institution of the sacraments by Christ and their efficacy with regard to grace;23the doctrine of the real and substantial presence of Christ in the Eucharist24and the sacrificial nature of the eucharistic celebration;25the foundation of the Church by the will of Christ;26the doctrine on the primacy and infallibility of the Roman Pontiff;27 the doctrine on the existence of original sin;28the doctrine on the immortality of the spiritual soul and on the immediate recompense after death;29the absence of error in the inspired sacred texts;30the doctrine on the grave immorality of direct and voluntary killing of an innocent human being.31 With respect to the truths of the second paragraph, with reference to those connected with revelation by a logical necessity, one can consider, for example, the development in the understanding of the doctrine connected with the definition of papal infallibility, prior to the dogmatic definition of the First Vatican Council. The primacy of the Successor of Peter was always believed as a revealed fact, although until Vatican I the discussion remained open as to whether the conceptual elaboration of what is understood by the terms 'jurisdiction' and 'infallibility' was to be considered an intrinsic part of revelation or only a logical consequence. On the other hand, although its character as a divinely revealed truth was defined in the First Vatican Council, the doctrine on the infallibility and primacy of jurisdiction of the Roman Pontiff was already recognized as definitive in the period before the council. History clearly shows, therefore, that what was accepted into the consciousness of the Church was considered a true doctrine from the beginning, and was subsequently held to be definitive; however, only in the final stage – the definition of Vatican I – was it also accepted as a divinely revealed truth. A similar process can be observed in the more recent teaching regarding the doctrine that priestly ordination is reserved only to men. The Supreme Pontiff, while not wishing to proceed to a dogmatic definition, intended to reaffirm that this doctrine is to be held definitively,32 since, founded on the written word of God, constantly preserved and applied in the Tradition of the Church, it has been set forth infallibly by the ordinary and universal Magisterium.33 As the prior example illustrates, this does not foreclose the possibility that, in the future, the consciousness of the Church might progress to the point where this teaching could be defined as a doctrine to be believed as divinely revealed. The doctrine on the illicitness of euthanasia, taught in the Encyclical Letter Evangelium Vitae, can also be recalled. Confirming that euthanasia is "a grave violation of the law of God", the Pope declares that "this doctrine is based upon the natural law and upon the written word of God, is transmitted by the Church's Tradition and taught by the ordinary and universal Magisterium".34 It could seem that there is only a logical element in the doctrine on euthanasia, since Scripture does not seem to be aware of the concept. In this case, however, the interrelationship between the orders of faith and reason becomes apparent: Scripture, in fact, clearly excludes every form of the kind of self-determination of human existence that is presupposed in the theory and practice of euthanasia. Other examples of moral doctrines which are taught as definitive by the universal and ordinary Magisterium of the Church are: the teaching on the illicitness of prostitution35and of fornication.36 With regard to those truths connected to revelation by historical necessity and which are to be held definitively, but are not able to be declared as divinely revealed, the following examples can be given: the legitimacy of the election of the Supreme Pontiff or of the celebration of an ecumenical council, the canonizations of saints (dogmatic facts), the declaration of Pope Leo XIII in the Apostolic Letter Apostolicae Curae on the invalidity of Anglican ordinations.37... As examples of doctrines belonging to the third paragraph, one can point in general to teachings set forth by the authentic ordinary Magisterium in a non-definitive way, which require degrees of adherence differentiated according to the mind and the will manifested; this is shown especially by the nature of the documents, by the frequent repetition of the same doctrine, or by the tenor of the verbal expression.38 12. With the different symbols of faith, the believer recognizes and attests that he professes the faith of the entire Church. It is for this reason that, above all in the earliest symbols of faith, this consciousness is expressed in the formula 'We believe'. As the Catechism of the Catholic Church teaches: "'I believe' (Apostles' Creed) is the faith of the Church professed personally by each believer, principally during Baptism. 'We believe' (Nicene-Constantinopolitan Creed) is the faith of the Church confessed by the Bishops assembled in council or more generally by the liturgical assembly of believers. 'I believe' is also the Church, our mother, responding to God by faith as she teaches us to say both 'I believe' and 'We believe'".39 In every profession of faith, the Church verifies different stages she has reached on her path toward the definitive meeting with the Lord. No content is abrogated with the passage of time; instead, all of it becomes an irreplaceable inheritance through which the faith of all time, of all believers, and lived out in every place, contemplates the constant action of the Spirit of the risen Christ, the Spirit who accompanies and gives life to his Church and leads her into the fullness of the truth. Rome, from the offices of the Congregation for the Doctrine of the Faith, June 29, 1998, the Solemnity of the Blessed Apostles Peter and Paul. Joseph Card. Ratzinger Prefect Tarcisio Bertone, S.D.B. Archbishop Emeritus of Vercelli Secretary

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