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This may not be posted in the right place, if it is, please move it. I just had a dear friend go silent key Thursday and was an avid radio operator for 40 years. He was a nut for the Browning radios. Mark 3, mark 4 and I'm not sure what else. His wife has asked me and another hand to go thru...

I'm sure the answer to this question is buried in this forum somewhere, but I had minimal luck turning it up. My question: what I say involved in converting some of my Maco 200's to 6 volt? I understand I have to reduce the filament voltage to 6.3 volts, but is there anything else involved? I've...

I'm sure there is another thread or ten on here about this, but I've not been able to figure it out. With minimal equipment, how does a person measure chokes in a Maco 200. The choke on the tag strip feeding the driver and the one on the tank coil underneath are the two I'm talking about. The...

ok folks, I may have a hum drum question for the considerable minds on this forum but here goes... when re-capping an amp, do I need to go back with the exact same caps and values in the filter caps or can the be played with? Say one had 4 100uf 450v strung together, could I use a couple 220uf...

I've got a noise toy that I pulled out of a radio some years ago and have forgotten how to wire it back up. It's a 4 wire hookup. Blue, white, grey and brown. It looks like blue-white are the audio in and out. Grey looks like power in and grey to ptt on the mike or a switch but it doesn't work...

ok, i recently got a cobra 2000 that can be compared to one of those "buy here pay here" car lots. its obviously been through a dozen hands, been modified by each and has been rode hard and put up wet. ive been able to undo all the "mods" except for one. talkback. ugh.. this variation has...

Does anyone know where a fella could score an original transformer for a Maco 200. I picked up a 200, 300 and another 750 this week and the 200 smokes the tranny when flipped into standby. These were all literal barn finds. All cleaned up really well and all original except the 300. It has 6...

Scrolling thru fleabay looking for "deals" and I've come across the find of the century! Think I'm gonna take a second mortgage and buy a few

The wife bought me a heathkit today for my birthday. The unit is in really good shape cosmetically. Still has a few original caps, some replaced. Someone put new 1/2 watt resistors in place of the 30k 7 watt, smh... and that board had been hot. I've seen replacement power supplies online, are...

My Maverick has decided to acting up lately. The one of the load controls on the finals is an arco 304 compression trimmer. Lately, is decided to start arcing within itself. Between the plates on the trimmer. Just as I get it loaded for max smoke, it arcs and power drops out. Does it badly...

hello all. I took a break from another radio, posted in the forum, to look thru some parts rigs I have and pull parts and what not. I came across a 979 I bought when they switched to mosfet. I can't remember why I tossed it but over the years I w pulled parts out of it. I decided to try to...

just bought a superstar 360 at a flea mkt. had noise toys and talk back module and a bent swr knob, but no volume on rx. Meaning no sound comes out of the speaker. I assume it's receiving, the needle moves with on air traffic. No sound with internal speaker or extension spk. Any ideas would be...

Just bought a Boomer power supply and amp at a yard sale. I know, nothing is for sure in a yard sale. Get it home, slide the top cover out to see what transistors are in the amp. Power ed it up and smoke rolled from one of the big caps in the back. Shut it off, ordered caps to replace them. Put...

Bought a cobra 1000 today. Had been sitting for who knows how long in an outdoor building. When I got it home and took the covers off, about a pound of dead cockroaches feel out, smh. Anyway, at first it powered up. Meters were stuck, meter lights burnt as well as the receive light. Had great...

Does anyone know where I can get new or used covers for a Maco 750. An older hand that's getting out of cb gave me one, it's reasonably clean inside but some joker decided to re-paint it and make it his own. I need a new meter and covers of anyone knows of anything, I would appreciate it

i hope this is in the right forum. I've got a couple d104's that are unamplified, one from '75 and one from '62 with the DN-50 head. I've been trying to wire these to a four pin plug but can't seem to get the wiring right. On both o have red, blue, with the shield having the black and white...

just got a palomar 300a from an older gentleman that was getting out of radio due to lack of interest. It seems to be a great amp. It's 2-6kd6 driving 2-6lf6's. on my pres Dwight it does 550 pep under normal modulation. Not as stout as my maco's but much cleaner. Anyway, I started having...

I've got a Dwight D with the 858 chip and would like to drop the dead key on this unit. When I first got it, it was around 3 but had be de-tuned so to speak. After replacing all the electrolytic caps in the radio and repeaking, it has a 5.5 watt key swinging about 12. The peak isn't a concern as...

Hello all. I hope I'm posting this in the right forum. I am brand new to tube amplifiers. I've always run transistor amps and can get my way thru one of them decently. I moved to west Tennessee a while back and everyone here runs tubes. So when in Rome... ok so I bought a Maco 200 to learn on...

Ok, once moving here to west Tennessee, I can see there is a bad need for a good technician. The one my radio friends frequent, to me, is apparently not a tech, but more of a YouTube modifier. One of the guys asked me to look at his 2547, because the clarifier wouldn't work after a channel...