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yes, that SMT - Surface Mount Technology - parts just fall off the boards, after banging the radios around. Recently I repaired a RCI-2995 and soldered in an old "real" transistor in place of the SMT transistor (Q67 in the Amplitude Modulator) that was bad. they lightly glue the SMT...

well, I was a pirate broadcaster. on 7417 kHz, 4915 kHz, 1610 kHz. I would build little AM transmitters with 2SC1969 and IRF510 transistors, from Radio Shack. used a guitar amplifier to modulate. back in the day, the 90's. it was so fun! got letters from all over. and bands sending me...

did you get this radio working?

we have that out here in southern Louisiana. I was out near Lafayette the other day. cracklins' with the meat on it, all greasy, with the hot powdered seasoning. but I miss walking into a large Radio Shack in a bigger city, and picking a bubble packaged 2SC1969 off the wall, for $1.99...

any techs out there that are real familiar, or have a radio on their bench now. I have been trying to get another radio in town here to compare with, to save time and effort. I have been working on this, my first 2970N2 main board EPT695015BR that another tech was working on and gave up. not...

P.S. - now the bias voltage at Q62 adjusts from 2.5 to 4.4 volts, and is stable.

While working on my first 2970N2, from another techs hands, found the main transceiver unit was getting hot. low output. the IRF520 bias settings were way to high, and one was acting squirrelly, eventually damaging IRF520 Q62. With the shorting board and Q62 removed from the board, I...

hey, are those cigarette burns? or melting from a soldering iron in that one pix.???

oh, when I said "they are cheap" ( IRF520 ) I mean low cost. less than a dollar. a good part. I used to make transmitters with these IRF510 / 520 / 530 / 540 MOSFETs. also good for powering up a relay. Radio Shack used to sell the IRF510.

IRF520's can be blown up easily. but they are cheap. if you give up, let me know. located in SE Louisiana. I need to make some more "beer n pizza money"

I repair these beasts. problems I found. do the tubes get red hot after keying up? zener diode ZD1 shorted. ?? No RF out? maybe resistor R3 is blown open. only half power? RFC-4 or 5 open. need to ground the grids directly. located in SE Louisiana.

I worked on tube amplifiers, but them mobiles have that funky power supply, to convert the 12 VDC to high voltages needed. So if too much work to repair, I take the tubes out, and any good variable capacitors, and throw the rest out. Maybe you have a "Pal" or "Palomar" amp.

old origional post here. popular radio. I am new in WW DX website. I recently was given a broken and modified 148 B made in China. I got it working all stock now. them fat microphones go bad, and speaker audio goes through the microphone switch, which is lousy. audio cuts out. I have the...