I only had about 15 minutes to look it over, and I don't know if the pa works. The solder side isn't too bad, minus a horrendous soldering job on the talkback resistor. Needs a cleaning for sure. Isn't there supposed to be a resistor on the solder side as part of the swing mod? I'll have to look into that
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You can remove the talk back, put it on a switch, or however you like, it looks pretty gnarly no doubt!
Check if two wires run from the capacitor (swing kit) to a knob up front, if that's the case it's a variable dead-key done cheaply, no resistor to be found underneath because the potentiometer is a variable resistor.
If you swing kit a 25/29 the resistor determines deadkey, insert a variable resistor and boom, variable dead key and no "usaul" resistor to find underneath the capacitor!
The TIP29,TIP31,TIP120 or many other transistor based variable dead key mod is better than just using a potentiometer. (Check RF gain pot, some mods use this and solder the two rf gain wires)
Though I don't like variable dead key /swing mods in these, the choice is always yours.
These talk fine @ 95% modulation and don't need any mods done, just a good microphone!
The real shame in this radio is the hole they drilled..... ....... The rest of the damage could be undone in an hour, that hole will last for ever.... I hate seeing lids getting drilled..
At least the solder side looks great, minus the t.b. resistor you spotted.