Kenwood TS-530S, pt2

 This is a friend's Kenwood TS-530S that I brought out of the mothballs for a friend, last year. Another minor bug had developed, and I resolved that. This radio wasn't completely recapped, and that was the cause of this instability problem. 

Once repaired, my friend had an Astatic D-104 microphone that he wanted checked and wired for it. I cleaned the gain control pot in the base of the mic, installed a 4-pin plug to mate with the 530, and a new battery. This radio uses pin1 for audio in, pin 4 for audio ground, pin 2 for ptt, and pin 3 for ptt common. With this mic, no processor is needed. I set the rig's mic gain to full, adjust the mic's gain control up until background noise begins to rise, and hold the mic a foot or so away from my mouth when talking. Fine tune with the rig's mic gain to taste.  

Astatic D-104 Restoration

 This is another old desk mic that I picked up at a hamfest (I'm a sucker for these things...). It was in a nasty condition, and was almost free. You can click the first pic to see it prior to repair, and click the second pic on the right to see it now. I actually bought two junkers at the same time...and it is a good thing. I used the element from the parts mic, cleaned the chrome, sprayed and cleaned the gain pot in the preamplifier, replaced a broken connector in the base of the head from the parts mic, recovered the base with some felt from the hardware store, and installed a new cord that I had around the shop.