My recently-acquired R-4B is now doing transceive duty with my T-4X while the R-4A awaits PTO redemption.
I found that the PO moved the INJ jack to one of the SPARE locations. Don't ask me why. Hooked INJ from the T-4X there and Voila! Garey's CD with the view of the INJ cable clearly showed me where it was supposed to be and then it was easy to find. Now that I can play with it more, I've discovered that my hunch about the extra knob having something to do with the AGC is correct. The PO put an extra dual pot in the front, where the headphone jack used to be on the earlier receivers. While tuning in some CW signals, I started playing with it and it's for variable AGC. It's actually kinda neat, so I may embrace it on this rig and leave it alone. It sounds pretty good considering how dirty it is. I still don't know why he didn't just leave the INJ jack where it was... Steve Wedge, W1ES/4 To be is to do - Socrates To do is to be - Plato Do be do be do. - Sinatra All my computers have my signature with various pearls of wisdom appended thereto.
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