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If you're doing a project on an Exec II, you really will need to know which pin does
what. A manual is the best way, but in case you don't have one, these tables
might help.
Here's the pin-out for J901, the best place to interface a controller.
You'll need a 12 pin connector (below):
| Exec II SAS Board |
Purpose |
| J901-B 1 (near center) |
TX Audio Hi |
| J901-B 2 |
TX Audio Lo |
| J901 B 3 |
Ground |
| J901 B 4 |
Remote PTT |
| J901 B 5 |
+ 10 Volts |
| J901 B 6 |
Delayed PTT |
| J901 B 7 |
Key (no pin) |
| J901 8 |
Key (gap between plugs) |
| J901 A 9 |
Volume Hi |
| J901 A 10 |
Volume Lo (Grn) |
| J901 A 11 |
CG Monitor |
| J901 A 12 (near edge) |
RUS (RX Un Squelched) |
If you should want to use the screw type microphone connector to the right of J901,
here's its pin-out. If you use this as in input, you'll need to adjust R988
for level. This pot is about 2" to the right of TB901-3. Using J901
(above) gives a direct path to the TX Exciter and by-passes the microphone preamp
stage. This uses screw terminals so no connector is needed:
| Exec II SAS Board |
Purpose |
| TB901-1 |
CG Monitor |
| TB901-2 |
Mic High |
| TB901-3 |
Mic Lo |
| TB901-4 |
Local PTT |
| TB901-5 |
Ground |
If you should want to duplicate the front panel, here's the pinout for J912.
Remember, this is not needed for repeater duty if you install jumpers for F1
TX and RX. See "Controls" above for how to do this. You'll need
a 12 pin connector (below)
| Exec II SAS Board |
Purpose |
| J912B-1 |
Speaker Hi |
| J912B-2 |
Speaker Lo |
| J912B-3 |
Volume Lo |
| J912B-4 |
Volume Arm |
| J912 -5 |
Key (gap between plugs) |
| J912A-6 |
Volume Hi |
| J912A-7 |
Transmit Light |
| J912A-8 |
Ground |
| J912A-9 |
Squelch Monitor |
| J912A-10 |
C.G. Monitor |
| J912A-11 |
A+ |
| J912A-12 |
Key (no pin) |
Another connector on the S-A-S board you might find a use for is J913, "PSLM"
You'll need a 4 pin connector (below)
| Exec II SAS Board |
Purpose |
| J913-1 |
Vol. Hi "A" |
| J913-2 |
Vol. Hi "B" |
| J913-3 |
+10 V |
| J913-4 |
C.A.S. |
In case you need to reconnect power, here's the pin-out for J914, the power connector.
For its location, look at the picture on the page above. You'll
need a 3 pin connector (below)
| Exec II SAS Board |
Purpose |
| J914-1 (near edge) |
Ground |
| J914-2 |
No connection |
| J914-3 |
A+ (13.8 VDC) |
I got a request for the pinouts for the Receiver and TX Exciter. This should help
those of you who aren't using the SAS board for your project.
Transmitter Exciter Interface:
| TX Exciter |
Exec II SAS Board |
Purpose |
| P902-1 next to channel element (ICOM) |
J902-1 Just above the power connector |
TX Osc. Control |
| P902-2 |
J902-2 |
F1 (Ground this pin) |
| P902-3 |
J902-3 |
Compensation (from/to RX board) |
| P902-4 |
J902-4 |
TX Audio Hi |
| P902-5 |
J902-5 |
TX Audio Lo |
| P902-6 |
J902-6 |
A- |
| P902-7 |
J902-7 |
C.G. Low |
| P902-8 |
J902-8 |
10 V Reg. in |
| P902-9 |
J902-9 |
C.G. Hi |
| P902-10 toward the board center |
J902-10 Center of SAS board |
Spare |
And for the Receiver:
| Receiver |
Exec II SAS Board |
Purpose |
| P903-1 near the corner of the board |
J903-1 near edge |
Vol/Sq. Hi (discrim audio) |
| P903-2 |
J903-2 |
Blkr. Disable |
| P903-3 |
J903-3 |
10 V Reg. in |
| P903-4 |
J903-4 |
F1 (Ground this pin) |
| P903-5 |
J903-5 |
Compensation (to/from TX) |
| P903-6 |
J903-6 |
A- |
| P903-7 near the test connector |
J903-7 near center |
RX Osc. Control |
Channel Guard
| CG cable |
Exec II SAS Board |
Purpose |
| P907-1 |
J907-1 near board center (goes to H1/H2, note 3) |
Tone Rej. Filter Input |
| P907-2 |
J907-2 |
10V Reg |
| P907-3 |
J907-3 (goes to H7/H8, note 3) |
TX CG Cont. (PTT) |
| P907-4 |
J907-4 |
A- |
| P907-5 |
J907-5 |
CG Low |
| P907-6 |
J907-6 |
CG Hi |
| P907-7 |
J907-7 (goes to H18 only) |
Tone Rej Filter Output |
| P907-8 |
J907-8 |
Vol Hi |
| P907-9 |
J907-9 |
CG Disable |
| P907-10 |
J907-10 |
PTT (Delayed) |
Note 3: When 19D423644 Channel Guard is used, refer to alternate functions in
parenthesis. When Encode/Decode channel guard is used remove H1-H2, H3-H4, H7-H8
& H11-H12. Add jumpers H6-H7, H1-H11 & H12-18. When decode only
channel guard is used remove jumpers H1-H2, H7-H8 & H11-H12; add jumpers H1-H11 &
H12-H18.
The CG cable runs to the CG board. There are two versions. If you
have the CG board that uses the big red Tone Network it's not pin-to-pin...
| P907 SAS |
P601 CG (round) |
Purpose |
| P907-1 |
P601-6 |
Tone Rej. Filter Input |
| P907-2 |
P601-2 |
10V Reg. |
| P907-3 |
P601-3 |
TX CG Cont. (PTT) |
| P907-4 |
P601-8 (Shield) |
A- |
| P907-5 |
P601-8 (Shield) |
CG Low |
| P907-6 |
P601-5 |
CG Hi |
| P907-7 |
P601-1 |
Tone Rej Filter Output |
| P907-8 |
P601-4 |
Vol Hi |
| P907-9 |
P601-7 |
CG Disable |
| P907-10 |
n/c |
PTT (Delayed) |
If you have the newer CG board that uses the little white Versatone chip, it is more
pin-to-pin:
| P907 SAS |
P1001 CG |
Purpose |
| P907-1 |
P1001-1 |
Tone Rej. Filter Input |
| P907-2 |
P1001-2 |
10V Reg. |
| P907-3 |
P1001-3 |
TX CG Cont. (PTT) |
| P907-4 |
P1001-4 (Shield) |
A- |
| P907-5 |
P1001-5 (Shield) |
CG Low |
| P907-6 |
P1001-6 |
CG Hi |
| P907-7 |
P1001-7 |
Tone Rej Filter Output |
| P907-8 |
P1001-8 |
Vol Hi |
| P907-9 |
P1001-9 |
CG Disable |
| P907-10 |
P1001-10 |
PTT (Delayed) |
New: Connectors
You'll need to buy some connectors. Lucky for us, instead of expensive proprietary
connectors, GE used very common parts we can still get very cheaply.
Do you need other pin-outs? Let me know.
01/14/08 01:12 PM
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