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  1. A

    Your vote on Modification

    Is this for real?
  2. A

    Cobra 148GTL mods?

    None of the above posts are correct. I am sorry but with the correct engineering changes by someone who knows what they are doing the radio can perform very well.
  3. A

    Think you've seen it all?

    That's just ridiculous, can't be for real.
  4. A

    Wilson 5000 - How broad banded?

    In a "real world" situation, I agree with Moleculo. I have experienced this first hand.
  5. A

    Class A bias amp

    Ok first of all there is no "class AB1 or AB2" biasing for a bipolar, solid state amplifier. AB-1 and AB-2 are used to describe the element of a *tube* that is biased with respect to another element in a tube. When referring to a solid state amplifier, there are of course, different classes...
  6. A

    How to perform the 2sc2999 and Schottky diode swap

    He is correct. I must say like it or not, this mod does nothing but bring up the gain in the front end of the radio where you don't want it and it's still a bipolar transistor. For parts changers to feel that they have accomplished something, it is a free country, so go for it. However, for true...
  7. A

    Wilson 5000 - How broad banded?

    I think the best idea going, use two different whips, one centered for 11M and one centered for the portion of 10M that you want to operate on.
  8. A

    receive on president madison

    After you re-cap it, you are going to need to realign it again. Also the type of capacitors in the audio chain make a big difference. So if you are going to re-cap it, why not use tantalum capacitors in the audio section, and also change a few values to tailor the RX audio?
  9. A

    TS 2000 FT 897D or ?

    For your needs from what you are saying I would recommend the 897D
  10. A

    Construction of 140W PEP EB63 amplifier + Low-Pass Filters

    Excellent and very nice! Another thought is gain compensation if you plan to use this on a few different bands which would be apparent from the use of your several low pass filters.
  11. A

    99v ssb meter pegs when keyed

    Cold solder joint or faulty component in the VCO section.
  12. A

    Low receive audio on TS 50S

    Sir, are you comfortable working on the radio? If so, I can help you out and point you right to the problem. If you have good soldering skills, a steady hand, and a fine tip soldering iron we can get it back up and running...no problem.
  13. A

    m250

    There were several versions of this amplifier produced. The only way to know if it is a messenger or a good clone is to see what it looks like on the inside. Are you able to pull the cover and post some pictures?
  14. A

    Henry 2K2

    Weak tubes, amplifier tuned incorrectly, improper plate voltage or problem with plate supply, improper load, tube oscillation, or bad bias.
  15. A

    Cobra 142 GTL, lots of issues

    My first guess was going to be a shorted capacitor in the RF track, however, if the radio has output this would not be the case. It is possible that the radio is off frequency by a few KCs
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