Looks like the supply to the clarifier's fine control.
clarifier unlock
clarifier unlock
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General Stonewall Jackson Help
- Thread starter Redbeard190
- Start date
So I am guessing that's so it can shift the VCO voltage without dragging the whole PLL around. Please someone correct me if I am wrong or headed in the wrong direction. Trying to learn
In transmit, the tuning voltage comes from the path of the red arrow. In receive, the tuning voltage comes from the path of the green arrow. Clarifier unlocks change that so the clarifier (tuning voltage) is the same in both RX and TX. To do this, it is common to cut off the TX voltage (usually by clipping the diode above the red arrow) and moving the RX voltage source from the RX rail to the 8v (always on) rail. Thats why the wire was moved over to the 8v rail.
Edit: Hold on, I'm having one of my "WTF??" moments. I have a feeling this schematic is wrong, because as is, the course adjustment would work during transmit too (its wiper goes straight to the varactor). This schematic, the 99v, they all show it this way.
I think the schematic should be like this instead (but I've been wrong before):
Edit: Hold on, I'm having one of my "WTF??" moments. I have a feeling this schematic is wrong, because as is, the course adjustment would work during transmit too (its wiper goes straight to the varactor). This schematic, the 99v, they all show it this way.
I think the schematic should be like this instead (but I've been wrong before):
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Appreciate it Brandon. If you don't mind me asking what Schematic are you using. I started out with a Galaxy 88 and it started getting way off so I have been using one for a 2517 but I still notice some indiscrepancies. If I had the time and patience I would correct a similar schematic to the Stonewall. I have noticed there are quiet a few people looking for one. Anyways thanks again.
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I will have to look when I get home. I think it is from a superstar radio with a single final. I believe the galaxy 99v is similar, but again, single final. All I had to go by was an internet reference that said it could have the EPT360014B board, and searching my files for that number, I came across the superstar something or another. I will check when I get home.
Isn't it pretty much a Saturn? Can you find a board number?
Isn't it pretty much a Saturn? Can you find a board number?
Short version:
Post #14 he said "fixed, sort of". What followed was a clarifier question about a wire on pin 54. Looked like a clarifier unlock. OP then asked what schematic I used, and as of now, I don't think anyone knows which is the proper schem.
Should match up with the Galaxy DX11B schemo from CB Tricks. Pin 54 is receive-only 8-Volt power from R141. If the red wire goes to the clockwise lug of the rear half of the clarifier control, this is where it was connected. To make the receiver and transmit frequencies "lock" together on the Fine knob, put this wire back to 54. Don't have to put it back into the plug, just strip the end and solder to the solder side of the pc board, the pad under #54. Remove R141 and D38. Add a 100-ohm quarter-watt resistor, one end in the side of where R141 was that leads to pin 54. The other end of the resistor goes to the foil trace that runs along the frontmost edge of the pc board. Has a continuous 8 Volts on it. This way when you tune in another station on sideband, he'll hear you on the same frequency. The factory setup would split the transmit and receiver frequencies apart, making it a pain to use on sideband.
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