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Search results

  1. OldTech03

    Using mismatched sweep tubes in amplifiers

    Most likely it does. I know Brain leakage does?
  2. 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...
  3. 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.
  4. 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+...
  5. 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.
  6. 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...
  7. 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.
  8. OldTech03

    YAESU FL-2100B resistor question

    I just got done restoring one of 2100b for a customer what resistor is toast in it?
  9. 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...
  10. 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!
  11. 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...
  12. 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...
  13. OldTech03

    cobra 2000 receiving and tx but channel not changing.

    Just trying to go all CLINT EASTWOOD on ya. LOL
  14. OldTech03

    cobra 2000 receiving and tx but channel not changing.

    Do have a license for that power???????? Well do you!!!????
  15. OldTech03

    SWR Too low

    Well, it should most likely be tested at the antenna if at all possible with a 6-inch jumper and an analyzer or portable radio or even a walkie talkie "just trying to cover the bases" that way you could see if there is first a different reading at the antenna and second a conflict with the coax...
  16. OldTech03

    RFT PP100 transistors vs DEI 2879s

    There are all kinds of reasons why most of what is thought to be true in this post is simply not. I'm not trying to start a fight but the truth is simple and it's not likely Xforce had these PP100's built to there specs as that investment by a company already in the RED most likely didn't happen...
  17. OldTech03

    Remarkable knowledge

    Would you like my Paypal info to send me a check? LOL Thanks if I'm included that is? OldTech03
  18. OldTech03

    Yaesu VR-5000 Shortwave AM FM VHF UHF SSB Radio Receiver 100 KHz - 2600 MHz

    THIS IS NOW SOLD TO A GENTLEMAN IN OF ALL PLACES SOUTH AFRICA!!!! BUT IT IS SOLD.
  19. OldTech03

    Adjusting SWR with amp

    PROBLEM: HIGH SWR'S BETWEEN RADIO AND AMP WHILE THE AMP IS ON? CAUSE : MISMATCH IN THE INPUT NETWORK! CURE: OUT OF VALUE PARTS? PARTS THAT HAVE BEEN REPLACED WITH THE WRONG VALUE? BAD CONNECTIONS IN THE INPUT STAGES? MY GUESS: INPROPER VALUES IN THE INPUT STAGE, A...
  20. OldTech03

    Trying To Do The VFO Wind Up Cobra 29 Chrome Help Please

    Come ON! Guys what would you do if you wanted to make a 29 delta tune circuit do this silly frequency shift when you key the mic? Think about it you are trying to add a timing circuit to the varactor circuit when the transmit voltage is switched from one setting to another during the REC/XMIT...