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I have a 980SSB that worked fine, one night I think the desk mic may have accidentally got bumped and locked into transmit, blowing the RD16HHF1 fet eventually. The mic is a old Turner Super Sidekick, has that sliding lock switch that can be troublesome if you bump the mic around. So this...

Anyone have a list or link to a list of the various models and what the sounds are? Someone brought me a DX99V with a pair of noise toys in it, not sure what they are, was just wondering. Radio is currently not working, have to go over it, haven't pulled the noise toys to test them yet...

Found this in my junk box today. This has been floating around in my junk box since like 1992. I forgot I even had it. I think I originally had the entire casing and heatsink that went with it. Looks like a 2 x MRF475 linear amplifier with thermal tracking (via diode under board see bottom...

Dug out some old Class C 2SC2879 2 pills I built back in 2003. Did not realize they are non Red Dots till I opened the amps up. They are. So what should I do with them? I'm not planning on building or running any "Comp" boxes, I'd hate to build something with these when I could sell them...

Was reading over posts here about simple amplifier biasing to otherwise AM/FM only Class C amplifiers, by adding big resistors and reverse diodes, the normal, easy, but works, way to do it. So I thought I'd contribute this, for opinions, options, upgrades and applications. This is a crude...

Anyone know what the Omron or one of the other brand of Relays that Mouser carries will replace with right pin spacing etc, the Panasonic/Aromat HB2-DC12V relays? I tried looking through there, but so far none of them match the pinout. They are 2 Form C, but the pins are like this on the ones...

Anyone know what this is or know how to test it? It looks like it may be missing a wire? See photo.

PA works, sounds strong audio. In CB Mode, No RX and No TX Audio or RF Output. Bought it missing the PLL chip. I assume it had the branded Cobra 25LTD PLL in it. I do not have a spare, so I dropped in two different TC9106P (or BP) PLL's. I get 4.6VDC or so on pins 13 and 14. I have...

Bought this used Grant LT for $20. I see it's missing the AM Regulator, so I know that will have to be replaced. other than that I do not know what is up with the radio, have not tried to power it on yet. Inside is this looks to be add-on circuit board, I don't think it's factory. I do not...

Hello everyone, been a while since I been here (2013). Been hamming it up, mostly playing with SDR gear and old Shortwave rigs, not much TX time.... Anyway, a friend brought a 148 GTL D to me that he had jacked up the VCO voltage somehow when trying to do an alignment (I guess going off of...

Hi all. Been away too long. Finally got around to cleaning up my 101EE again and get some new tubes for it, popped one a while back, not sure why, tube just getting old or mis-tune was likely, as I was in a hurry. I bought a group of used tested good 6JS6C's for it, though they are mismatched...

Friend has an S9 80 bought it last year worked great until a couple days ago, for no reason we can see the displays for channel and frequency just went all retarded, can't make out what channel or freq your on. I had seen some other posts where people bitched about the LED's burning out, but...

Ok, I got this old Yaesu, and it was working good, had a problem when switched to 160 meter blows fuse, found C131, replaced it with 1000pf silver dipped mica cap... Below it is a burned up capacitor, I mean burned up bad. I have seen notes to replace C13 (80pf 1000V) cap, as it could go...

Okay, so I have this old Navaho AM/SSB base station. First thing that was wrong with it, was that it had a NTE236 as the driver transistor and a 2SC2166 as the final output transistor. I removed the NTE236 and put in it's place a tested working 2SC2166 and where the bad 2SC2166 (supposed to...

Anyone build one? The tubes used for Guitar amps are common, cheap, not going anywhere, and typically require similar plate transformers to the old days sweep tube amps. I got a pair of these may modify an old BlackCat JB-150 (originally 2 8417 tubes) to use these Svetlana SV6550C tubes ($55...

Does anyone sell a nice tuned input for one of these amps? I am looking at building an HF Amp for my shack and was wondering if it were necessary to add a tuned input or not and if so, is there a place you can just buy it? I really am not interested in all that winding coils and matching...

I know it's a Diode, can't read what the number is for it on the schematic. I have an old Phillipines Grant XL here with MB8719, has a shattered D44 and seems to not want to work on channels 38,39,40. but seems to work on all other channels, maybe some low voltage to the IC IDK, but also it...

I have one of these old tanks here. It has the clunky relay in it when you switch bands... I understand it may need cleaning or repairing. BUT, this radio is having some other problem that I am not sure if it's related to the stepper relay problem or something else. It will switch bands (on...

Someone brought this into my shop, and I did a little researching, I saw where a lot of people had these things and while I saw lots about how it could electrocute the user, I never found one story about someone being electrocuted by one of these things. Question is. Can it be made safe...

Okay, so I got my supposed "JB12" in the mail today. Turns out it's a JB150. The older one with the 6AQ5A keying tube. Had an RCA 8417 tube in it. After repairing a few broken solder connections inside and replacing the keying diode (1N60P, was 1N34A, and was broken) I talked on it for a...