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Man you were Johnny on the spot with that one. That's great! I have a collection of original RCI 2950/70s and if they take a dump beyond my ability then it's great to know there are some well versed, educated types around here

I've had great luck with the PSU's I get from Parts Express. Even if you can't get their dealer pricing, the price is better then what you find just using google. public price of 46 bucks and it's adjustable up to 13.8 if you want a slightly higher voltage unit that sweeps from 13.9 to 16 or...

This ^^^^^^

Yeah I was really impressed with how it turned out. These are stud mount as well. Worth 20 bucks unimproved any day too. Because stock they, work. But can definitely perform better. But look at the time and money in parts it takes, This definitely isn't a for profit sale or learning venture...

I didn't see any picture. Units with vibrator circuits I've seen personally were TO-3 The case style really isn't relevant to the mans problem or exactly how 12Vdc becomes plate voltage, germanium or not. He didn't know if he bought a tube amps or a "pill' amp. Sadly for him, it appears he...

This is now actually a pretty sweet 4 pill box for an AM operator. Class C here, no SSB operation Has original ST micro electronics 2d1446s I have upgraded the power wires with 8 awg high strand copper and an Anderson Connector and tied the output tx voltage supply right to the power input...

This is an oldie but goodie, sold under many goofy names 2 Pill Class C box all tuned up and ready to roll. It's a low drive box perfect for a single final cobra or similar. Bench Cobra 25Ltd Keying 1 watts, swinging 7 watts average or 28 PEP drives this amp to a 15 watt dead key and...

Yeah those TO-3 cased transistors are part of the "Vibrater" circuit. Basically a 60ish hz oscillator and power amp to convert 12Vdc to an AC signal a typical linear transformer can then use and step up. Exactly what frequency depends on transformer design though. Then, it's onto normal...

I know the name, but I'm not familiar with their power supply products. But. It should be capable of operating off 240Vac Internal wiring configuration. It'd be better all around to run it at the highest supply voltage possible. More efficient.

Also something worth keeping in mind is that breakers normally get weaker as they age or with functioning use. I,e tripping. Now from what I've read depending on design they can "open" below their current rating or not open when they should. Now Chinesium breakers burn folks houses down with...

People 150 amps @ 14.5 volts equals 2175 watts. Now. That's output. Available to your Linear! Now. How much is lost in the transformer and how much is dissipated as heat by regulator or pass transistors. Regardless if this PSU is a switchmode Snollyfluffer or if it's a Linear Snollygoster...

The modle numbers changed and eventually they used 2sc2290s. But overall output power never increased It's pretty obvious the Skelton 100 got its model number from its average power. And we all know how people chase peak envelope power numbers.

It double posted what should have only been 2 pictures. I guess you can't edit posts anymore.

FS are two (2) Texas Star Skeleton 100 2 Pill Class C, AM only Linear amplifiers. These are somewhat rare, especially in this condition. Though one did have a switch added to the face plate at some point. It does nothing currently Cosmetics are superb. Both amps have had power wire upgrades...

Well crap. I'm not here to make you feel bad about your linear. As you mentioned you got no response from the "builder" or dealer/seller. If you have a radio tech you know, trust. Have him put a 10$ relay in the amp. Even use the small one to trigger the big one. They used metal clad caps on...

The weak link in a short glance in that box is the relay. If you drive the piss out of the amp. Which you will. That's the whole point. It will draw every bit of 70 amps or more from your power source. So at 50% efficient overall, half of that "visualized" picture of power is going to go...

I think you should request, order, buy what have you a few matched pairs of finals from your builder when he is ready to ship it back. I produce guitar amps. Tube amps. I include a variety of power tubes that can be plugged in with no need for adjustments by the artist. Tubes can fail. So can...

I completely appreciate the behind the scenes logistics involved in low level production. 10,000 units or less a year. Even though it appears LDMOS is the real way to go now. There definitely is a market for amplifiers that operate on 12-14vdc without DC to DC converters. With that said...

I've thought about using a 3/4 electrical wavelength of coax (velocity factor) fed from the input of the 1st quarter wave to feed a second quarter wave. It would take some tuning I'm sure but as far as signal phasing goes, this would in effect give you 2 quarter wave antennas (Mobile) operating...

I've worked on a few of these ;) They all had aerovox variable caps on the output transformers or swamping cap. Most had silver mica caps soldered to the through holes on them to get them closer to the expected range needed for tuning. Some even have them on the input transformer. While...