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Went ahead and snagged a TRC 458 off Fleabay, radio is in pretty good overall condition and was recently recapped, dude did excellent soldering work and used quality capacitors, this is the radio I had as a kid / teenager. Installed a new relay, working on heat transfer first, power supply /...

No need to apologize hope the surgery went well as does the recovery.

Very happy with the antenna tuner, although I never owned one before and I have nothing to compare it to, it seems to work good. Experimenting on the 11 meter band (with a magnet mount antenna on a washing machine), I have the " transmitter " and " antenna " capacitors adjusted to a fixed...

Still not exactly understanding here, using the 11 meter antenna as an example. If the antenna (radiator) I construct is built as close to precise as possible by adjusting the length of the wire so that the wire resonates mid-band then that means that most of the energy that reaches the wire...

The second TRC 490 is in very nice condition as well, seems to work, although both radios smelled like mold when I powered them up, internal layout seems quite different from the 458 YouTube videos I have seen, more congested, hopefully I can up my soldering skills to recap them, my...

Insulation in the floor, bare rafters above, cast iron stack pipe around 9 feet away, no electrical wiring above the attic floor, no TV wiring or cabling. The attic peak is probably close to 9' high. That is the thinking, build as precise as possible paying attention to the little things, then...

That makes two of us. I am curious as to how they expect you to build a full wave vertical circular loop ???? A horizontal hexadecagon is doable. https://rechneronline.de/pi/hexadecagon.php

Have you ever experimented with taking a wire and making several large loops, say 12 feet across in the shape of a hexadecagon, and then spiraling the wire downward so the loops were 10 or so inches apart, having 7 loops in total ? 7 loops would be around 263 feet, that would hit the 80 meter...

I actually have a design in mind, but I want to experiment with it first.

That sure is a creative design, I am taking it that radiator works pretty well ?

Received the first 490 from Flea Bay the other day, exterior is in mint condition, figuring if you are going to buy one radio may as well have two, for a back up, should have the other 490 one in a few days. Seems to work, but I still have no antenna, just a magnet mount stuck on a work bench...

Yeah, from the research I was doing that is what I figured, if I went with a full wave loop for the 11 meter antenna, then I would use a 2:1 balun. I plan on building 2 separate antennas in my attic, hopefully they will not interfere with each other, one loop antenna tuned specifically for 11...

So I am taking it that you used an " antenna analyzer " to have been able to have taken these readings ? If so, were these reading taken directly at the radiator minus any coaxial connection, If that is the case then that will determine whether or not I will need a balun and the ratio of the...

Thank you for your response, interesting that this particular antenna configuration and location of the coaxial connection would yield a 50 ohm impedance, not sure the science behind this but from the YouTube videos I have watched and the various website pages I have surfed this is not normally...

I went ahead and purchased a TRC 490 on E Bay. I paid a bit more money than I wanted to spend but the radio looks like it is pretty mint condition so hopefully it was taken well care of, I will find out when it arrives. I would have rather purchased a 458 or 457 (from the feedback I received)...

Where would be the best place to try and purchase a TRC 458 ? E Bay is so hit and miss sometimes.

Question : I am pretty sure I am going to go with a full wave octagon shaped design suspended from the rafters above using rope and insulators, not too close to the rafters above, not too close to the floor below. The radio is going to be set up approximately 16 feet below and 16 feet off to...

Thank you for the replies. After I posted this I noticed I was not in the CB radio section of the website, however, I also recently came across a Ten-Tec Jupiter 538, not sure if it works (although it does seem to receive) and I am not licensed for ham radio, yet, but I could become licensed...

So after many years I am thinking of purchasing another CB radio, mostly to prepare for emergency use (solar flare, zombie apocalypse). The house that I live in is approximately 40' tall, so for ascetic reasons I do not want to install an antenna on the top of the house, however, I have a fairy...

I had a TRC 458, or 490 (forget which one, but I think it was a 458), back in the early 80s, and I am thinking of purchasing either a 458 or 490. I am not interested in adding extra channels, but I would want the better of the two radios. Do you still stand by the 490 being the better receiver...