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  1. 5

    Palomar 300a white vs black face.

    Are there any important differences between the white and black face 300a. A friend knows a guy with a clean white face for sale.
  2. 5

    Cobra 29 symptoms

    When I think bad finals I think no output. I have a Cobra 29 made in 1993 that had an rf feedback problem with the mic gain set to max. I could turn the mic gain down and stop it but the feedback could be heard with modulation. It has all new electrolytic caps and worked good otherwise. I...
  3. 5

    BBi explains antennas. (put on your high boots)

    o_O
  4. 5

    How many watts from a 2879

    It was mentioned in another thread that W8JI, the well respected engineer that designed many of the Ameritron amplifiers and medical devices, made some comments about CB leenyars on the qrz forum. I thought it was a good read...
  5. 5

    Short doublets and linear loading

    Assiming there is no tuner or feedline loss would linear loading a short doublet antenna increase performance? My doublet it 68 feet long. It is used on 80 through 20 meters. Would linear loading make any improvement in performance on 80? Another concern is moving the current maximums lower to...
  6. 5

    LesComm crystal failure

    I wanted to start a thread to see if anyone else had issues with these boards. I have the lescomm channel board on a 2013 cobra 29 chrome. The 15.36 crystal fails about every 8 to 12 months. I think yesterday was the 3rd time. Has anyone else had an issue like this? I contacted the manufacturer...
  7. 5

    Old sweep tube getter

    What are you guys doing with NOS sweep tubes from the 60s? Do you let the heater run for an extended period of time or are these more like a 3-500z where running the heater only doesn't get the getter material hot enough. The only old tubes I've dealt with have been the Russian tubes. With...
  8. 5

    New cobra 29 finals

    Are the new cobra 29s still using a 2078 final or are they coming out of the factory with a mosfet? I bought a uniden 78 a couple of years ago. It was made in Vietnam and had a mosfet. I believe it was a 520.
  9. 5

    Stryker 955 carrier on SSB

    I couldn't find any info on this issue so I thought I'd share what I found. To make long story short the radio had a carrier on SSB when the RF power on the faceplate was turned up past 10:00 or so. When you remove the bottom cover all was well. If you even hovered the cover over the bottom of...
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