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  1. TM86

    Problem child TRC-458

    Not saying this is your problem, but I had a similar issue last week with a TRC-449. Culprit turned out to be L39, which feeds 7.8MHz to FET7. One of the legs on the secondary was open. It would allow enough of the 7.8Mhz through to show on the o'scope, but not enough for FET7 to use for...
  2. TM86

    Looking for a Cobra 50 AM/FM/Cassette/CB Shaft Style Radio setup

    You sent me down a rabbit hole. There were three models of AM/FM/CB from Cobra at about the time the 50 XLR was out. The 46XLR, which had no tape player, the 50 XLR, which you're already familiar with, and the 55 XLR, which seems to have been the same thing as the 50 XLR except it played 8...
  3. TM86

    Would like to see some pictures of your pet's.

    Glad to hear he's back to himself. Even if it means you have to Fabreeze him twice a day.
  4. TM86

    Looking for a Cobra 50 AM/FM/Cassette/CB Shaft Style Radio setup

    Cobra 50XLR. AM/FM/Cassette and a CB with the S/RF meter on the front: https://cbtricks.org/radios/cobra/50xlr/graphics/cobra_50xlr_om.pdf Probably would go for the same price as 93GTL, if you could find one.
  5. TM86

    Realistic TRC-457 stock, freq issue

    Thanks for posting this. I thought this was how the signals were routed but you confirmed it for me with the colored paths. And I just now fixed a 449 with a bad L39. (Not the same 449 I had thread on a few weeks ago.) We now return this thread to fixing the 457 Hakweye351 is working on.
  6. TM86

    Is anyone making a new base station

    I stumbled across one on fleaBay. It's different. Not sure how effective the heatsink on the rear of the mobile chassis it's derived from is inside the box on the base. Maybe the side vents handle it no problem, just seems a bit odd to me. Overall I have to give props to the guy building...
  7. TM86

    Realistic TRC-457 stock, freq issue

    I think what's stumping you may be stumping a few others as well. I know it's got me perplexed. AM TX and USB TX/RX both rely on the 7.8025 MHz crystal being on frequency, so that's where I'd start looking. But if you've already looked at that and the oscillator is spot on, then I'm not sure...
  8. TM86

    Cobra 29ltd AM/FM as good as the older AM only?

    No, but one guy in NZ may have found a way:
  9. TM86

    Homemade?

    Looks like somebody 3D printed a front panel for a case and then proceeded to stick something like a QT40 in it with a switching power supply. https://www.ebay.com/itm/204690303413?mkcid=1&mkrid=711-53200-19255-0&siteid=0&campid=5336136228&customid=&toolid=10001&mkevt=1 Appears to be made by...
  10. TM86

    "S" unit panel mounted meter

    No knowledge, just a guess. "L"ight? As in power for a lightbulb to illuminate the meter?
  11. TM86

    Winter is coming!!!

    How does that compare to last year? Or is it too early to say and we need to wait until May to see how many cars were crushed in people's driveways?