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  1. OldTech03

    What electronics have YOU fixed lately?

    This is just what I can remember off the top of my head that I have repaired in the last 6 weeks. TEXAS STAR 350HD TEXAS STAR 250HD 100 WATT NO NAME MAGNUM 357DX MAGNUM 257HD MAGNUM 257HD EMPEROR TS5010 LA500 MOBILE AMP SUPERSTAR 3900 GRANT XL WASHINGTON BASE YAESU FT101EE YAESU FT101B YAESU...
  2. OldTech03

    RCI 2995 DX problem

    Did you ever check to see if the collector voltage was dropping at the mirror board when trying to modulate the radio.
  3. OldTech03

    RCI 2995 DX problem

    Does the voltage at the mirror board drop while modulating the radio in AM mode? it should stay solid and/or increase with modulation.
  4. OldTech03

    Coronavirus

    On a lighter note, there is incredible technology being developed that will make all our lives better.
  5. OldTech03

    An Act of Sheer Desperation...

    I don't know that might be to much bass?
  6. OldTech03

    An Act of Sheer Desperation...

    You can get more bass in your audio if you use "G" strings from a bass guitar the next time. LOL!
  7. OldTech03

    Holy Cow!

    Yea I don't know I just sent a fully restored LAFAYETTE HB400 radio back to a customer yesterday it 23 pounds and a pretty good size 17 by 15 by 14 and it was only 28.56. that was from Indiana to Virginia
  8. OldTech03

    Using mismatched sweep tubes in amplifiers

    Most likely it does. I know Brain leakage does?
  9. OldTech03

    Are you feeling the Bern ???

    Obama cleaned out everyone and replaced them with people that agreed with him. The only mistake Our president made was not doing the same. He will hopefully get rid of the radical left-wing socialists in his next term. I ran a business and the people that worked for me either agreed with my...
  10. OldTech03

    RADIO NOISE? High pitch whine!!!

    You didn't read my post quite right. Do you have the noise with the antenna not connected and the volume wide open and the rf gain full on and no squelch? there I think I covered everything. I didn't say with the engine off.
  11. OldTech03

    Are you feeling the Bern ???

    Yea Bernie keeps throwing the Canadian Health care system in our faces like it's an amazing system. What Bernie doesn't tell you is every year Canadian hospital doctors send about 60,000 people to 4 different hospitals in the United States because they can't deal with it and an additional 80+...
  12. OldTech03

    Are you feeling the Bern ???

    Please I would be interested in the exact instances you would be making reference to? What the exact facts are that were presented to him and the exact tantrum response from Trump concerning those supposed facts? No paraphrasing, no changing the context of the response. I'm from MO show me.
  13. OldTech03

    RADIO NOISE? High pitch whine!!!

    DEFINE GOOD grounds IN EXPLICIT TERMS. In another words how many places is it grounded? what kind of wire is used to affect the grounding? from what point to what point are the grounds being run? How long are the ground straps? The antenna needs a ground but not a wire run to the battery that...
  14. OldTech03

    YAESU FL-2100B resistor question

    The only resistor that value in an amp of this nature is most likely in the Voltmeter circuit for the plate voltage.
  15. OldTech03

    YAESU FL-2100B resistor question

    I just got done restoring one of 2100b for a customer what resistor is toast in it?
  16. OldTech03

    Cobra 138 with MATTCO 777 Channel selector.

    The matco 777 is nothing more than a crystal switch another words it's probably connected to channel 123 and 4 I don't know for sure but probably and then the positions on the matco switch have a crystal probably to gain the 40 channels and maybe even higher. Each position will give 4 more...
  17. OldTech03

    Neighbors pool pump adds 3 s units of noise

    A S&W 629 can insert a .44 filter the 629 offers easy trigger application of the .44 mag filter. After the application is complete the new pump will most likely not cause this issue. LOL!
  18. OldTech03

    Help with connecting a Heathkit SB-200 to an RCI 2995

    You don't really need the ALC line it's nice to have but not necessary you simply need a way for the radio you use 2995 could be modified with an internal relay that would allow you to engage the relay on the SP 200. I have set these up many times a simple foot switch can work or relay circuit...
  19. OldTech03

    Restoring a Kenwood TS-430S

    I purchased a 430 some years ago for next to nothing it cost more to ship it than I paid for it. I knew going in that the 430's had serious solder issues. I didn't even bother turning it on when I got I just disassembled it and did what you are doing. I put it back together and never experienced...
  20. OldTech03

    cobra 2000 receiving and tx but channel not changing.

    Just trying to go all CLINT EASTWOOD on ya. LOL