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If you have issues getting your >20mv scope to trigger on <20mv signals, or the 1x probe loads down the circuit causing random inaccurate readings/stalling, check this out. I saw a video on YT about this device, using it as a RF preamp and as an amp for your probes. The gain is variable...

It's a 1x4 tube amp. Missing a driver tube, 7 pin, with 6jg6a finals. Other than the markings on the transformer, I see no other. I see many like it, but haven't found the exact model yet. Thanks for looking.

I'm curious if anyone here has the full service manual for this, or some calibration information. I found a 3 page resource on the net but another forum mentions a complete manual circulating in .pdf format, have you seen it? Thanks, CG

Hi, I'm looking at the above amp and the final tubes are not 8950s, instead 26lx6 tubes. Now, the 8950 is a 13 volt tube, and the 26lx6 states, well, 26 volts, with less current draw. The transformer is supposed to put out 12v for the heaters, I haven't checked yet. I'm studying tube amps right...

Need to know how many amps I need for the line side (110v) glass fuse. It has a 20 amp in it but that seems too high to me. Thanks

Hi there. Does anyone have any info for this old rig? I have a friend that is interested in the hobby, never used a radio, and eager to "join the club" so to speak, I'm gonna give it to them as a start. We could use more local folks on the band, ya know. It works, very clean inside, acceptable...

Would you share your storage solutions for electronics components at or near your bench? I can't find a good storage bin option that fits discrete axial capacitors that isn't too small, requiring the bending of leads, possibly using multiple divisions for 1 value, or too big, wasting space. I...

Has anyone heard of or used this website for parts? If so, what can you tell me about them? I need some stuff they sell and am leary. Link below: https://www.communication-concepts.com/ Thanks, Greg

Found above radio in a friend's shop, buried under random shop stuff, you know. He gave it to me, knowing I tinker with them. Sometimes I get blessed like that. While looking over my new pet, I noticed L38 was missing his slug. I dropped one in and it immediately dropped power output. Peaks...

I have depleted my stock (donors) and in need. Recommendations needed, eBay looks more like scambay these days and I don't want to pay more than a few dollars each.

I can't make out the name but I think it's a boomer. The pills aren't really documented either, can't find anything about them. It works, just curious about it. Pills show Msrf 2512g. I haven't been able to Google things right lately as I believe they are deleting the internet, or search engines...

This amp, almost identical to a Palomar 400, just quit working mid-qso per owner (friend). I see a base bias resistor (10ohm) is smoked. Yes, it is clipped in the pic from troubleshooting. Schematic doesn't list it. I assume the pill shorted, sending 13.8v from collector to base. R13, 14, 19 and...

So I ordered one of those UR6QW EQs from Ukraine and it came yesterday. I eagerly connected it to my Uniden Washington and adjusted controls per the included guide. AM was hard and heavy with qrm so I was ssb bound. I found an opening and gave it my best, speaking softly and clearly into the...

I have this radio on the bench. Vari-key from 1-10 watts, peps to around 50 with good, solid modulation. Channel indicator is dark but readable. It appears the pll may be free running as the output frequency is all over the place in the 30mhz range regardless of band selector and channel. I'm...

This board is new to me. It has the smaller audio chip, not a TA7222. Looks to be marked 2003. Is there a schematic or anyone know of a "close enough" chassis for reference? This is in a Galaxy DX86V.

Hi all! A friend brought me this radio and said it didn't rx and that another guy said "blown diode". It appears that it does tx, on frequency, with full mod. Well, I'm not experienced in Stryker radios and it has smd components. Found a schematic and pcb layout. Noticed an inductor melted...

https://www.ebay.com/itm/291437306484?mkcid=1&mkrid=711-53200-19255-0&siteid=0&customid=link&campid=5336136228&toolid=20001&mkevt=1 Legit? Would you buy? Got some tip36c for dual final mosfet rigs but want some decent 2sb817's for single bjt final rigs. It says for audio and doesn't look to be...

Hi all. Can I get some opinions on this configuration? That's a vertical above horizontal beam. Bad idea?

So, this came to me from a trucker friend. He said he ordered it new from a local cb shop and it was supposed to be bone stock. He didn't want the tech to do anything to it. Upon inspection the limiter was pulled and I don't believe that is standard procedure for the manufacturer. Also, this...

I usually replace tantalum capacitors when recapping a radio since they are an electrolytic capacitor. I never replace ceramic unless faulty. However, I noticed my recap kit had no tants, only aluminum. I understand that radios made during the infancy of tantalum capacitors may develop faults...