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I have this amp. It works, however, two or three key ups and smoke ascends from the area of the toroid/resistor combo in the closeup photo. Any ideas? I'm not an electronics tech so, more than an easy cold solder joint touchup it ... If I can sort this out I will be offering this for sale. If...

I have two(2) each of these power transistors new. I think the MRF300AN's & MRF300BN's ought to be worth $15 each ×4 = $60 for all 4 +$6 shipping Total $66 Check out their online prices for appreciation for these prices. Thanks, Homer

Brand new high drive amplifier with used but good condition driver for sale as a single unit. I got this from a silent key widow. I agreed to help sell some of the things her husband left behind. Until I hooked it up to test the Rocket Box had not been used. My CB could get no more than just...

I purchased one of these quad band radios because I wanted a crossband router functioning option. I paid just over $200 new and was delighted at how well it worked when set up. Then, by a couple months of owning it the audio output failed. I had signal, and others heard me when I transmitted...

Does anyone here ever use ERF9530, MRF300AN, or MRF300BNs? How useful are they?

Anyone interested in a Ubitx V6.1? (good unit, but I have another one I'm keeping) This one is already assembled, and works as advertised. It's virtually unused, tested it yesterday after it being stored for ~2 years. With an antenna in my attic I made a POTA contact on 14.252 with peak 3watts...

The question is simple, and geared to my way of thinking. I am always less interested in hieroglyphics, and more interested in what did you do and why YOU chose that one. And, of course, did it work and how well. Especially in multiband antenna use. Making baluns and ununs isn't difficult, but...

12 years ago I built the tip over mast discussed in the link below. It never failed me, and saw many fun hours of homebrew antennas mounted or attached to it. However, a couple weeks ago my wife and I stood in the backyard and she once again quietly said, "That pole is an ugly and I wish it...

You see an insulated portable lunch box. I see 8 perfectly formed 1/2" aluminum Moxon antenna corners. Probably a 2m, and 10m.

Astatic 200S mic with 1/8" mono plug on the cord. Flea market find priced $54.

In 1996 I resigned from the small Southeast Missouri church where I had been ministering for a few years and purchased a 1957 GMC coach that had been a Greyhound bus in it's youth. I would take it from the weekend camper a singing church band was using it as, and convert it into a full fledged...

Again, today, 4/21/22, another great QRP contact on 15m - 21.300 mhz. PV8AL, Hello, in Brazil using 5 watts. My conditions were the uBitx v 6.1 and Imax 2000 @ 37' to the coax connector. Total distance from me, 3,313 miles. Yesterday, 4/20/22, Just for the fun of it, I had a Cleveland Ohio...

I have finally began putting together my manual tuner. I rolled those two inductors about 3 years ago. I got busy, and sidetracked. Now, I've just mounted them on the board. I know, primitive, but what else do I do... What I will likely need is some of you who've made your own to offer tips...

I got a little bitty nanovna a while back and didn't like it. I fussed about it and gave it away to someone who uses it. Now, I'm trying again with a newer version 4" screen model. I may need help...

Needed a 220Mhz antenna. So I added it to my 2m/70cm fan dipole. Now it is a 144/220/440 vertical fan dipole. Working okay. Yes, it isn't a 17' tall high gain vertical. It does get me into local repeaters and local rag chews. I also bought the tri-band Btech UV25×4 mobile to use as the base...

A fellow once said he had mixed emotions. His mother in law had driven his new pickup truck over a cliff... There isn't anything about this radio for the money I didn't like, until... I put a Tram 1481 antenna up (it was a gift) increasing my tx/rx range over the smaller verticals I'd been...

Three years ago I tossed together a quick and dirty 6m Moxon. It worked well, but was really rough in some ways. This was one of my "walker" specials. This same antenna was/is 100% the metal parts of aluminum crutches and a walker. I went back over it refining the look, and the dimensions. While...

To all of you who asked about both my wife and my health as we battled through Covid 19 back to health, Thank you. Many of you sent best wishes, while some openly committed to prayer and others kept their prayers close to their hearts. My wife came home yesterday afternoon. To help you...

In the area there are at least 3 stations hearing this interference regularly. 2 of us are 3 miles from each other, and the 3rd station is 8 miles from me, 9 miles from the station 3 miles from me. My radio hearing this is the Anytone 778. The next nearest station is a Kenwood. The most...