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  1. 711

    Heil EQ-200

    Picked this up and wanted a looksie
  2. 711

    Realistic 21-1173 Frequency Response

    Quick answer is no. Long answer is lower any cap to ground or open for more treble(highs) and increase any cap inline for bass(lows).
  3. 711

    Top Gun CP-1 Undressed

    https://www.worldwidedx.com/threads/2950-top-gun-cp-1-compressor.265812/#post-809669 I say better to play with feedback resistor and cap values
  4. 711

    Cobra 146 AMC

    I used the link and a few other of Andy's post for reference https://www.worldwidedx.com/threads/uniden-pc122-low-am-modulation.261212/ Ran a couple experiments on this chassis. After a tune up, I did the NPC with the resistor value being determined by using a 1k pot to find the value at...
  5. 711

    Anytone AT6666 experimental OP amp upgrade/replacement.

    Not worth the effort, the change is so minute its barely noticeable. This has been discussed before a lot. One of those recurring topics that happen every new wave of people. 4558's purpose is to take mic level audio to line level for the modulator section
  6. 711

    2950 Top Gun CP-1 Compressor

    The audio generator is tube and finnicky when you first engage it but settles out a second later, thanks for taking a screen shot before it settles ,Mike next time I'll post a snap shot to satisfy your curiosity. (sigh)
  7. 711

    2950 Top Gun CP-1 Compressor

    Been wanting to do a before and after for a while now. Did the NPC to the radio adjusted the resistor for 90-100% negative modulation and limiter in tact. Audio generator was kept the same through the videos till the last video. Second video was taken with R171 removed (limiter circuit). Last...
  8. 711

    ISO - SP-1A or CB Int’l compressor

    Lesscomm sells his copy for a 300% markup. I etched my own minus the relay.
  9. 711

    ISO - SP-1A or CB Int’l compressor

    I know of a few places selling copies of the SP1a. Lou Franklins CB Int speech compressor is totally different animal. Sp1a contains a compander and CB Int is a series of opamp stages with a feedback loop setup like a clipper. I have both and choose he SP1a for how clean it sounds.
  10. 711

    PDL2

    got a link?
  11. 711

    Palomar erf9530 source

    I got my stash from Eric back in March
  12. 711

    Inside a PP1

    Already saw that but didn’t have a clue to the color coding and mine didn’t have the stereo jack , just had wires sticking out on both ends. In the end it did not work so I gotta try to troubleshoot it when I get time. Also used the copy cat instructions
  13. 711

    Inside a PP1

    Got a used PP1, never came with instructions, so I had no idea which wires were which. Sharing what I found for others
  14. 711

    Stryker SR-955hpc to do or not to do

    Wrong Mark lol this Mark been working with the Chinese for a while on these radios
  15. 711

    Uniden Bearcat 980SSB (later revision)

    The way your post came across I though you were an engineer looking for a feature request. I’ve done a few audio mods and like this radio with the exception of AGC
  16. 711

    Uniden Bearcat 980SSB (later revision)

    Switchable AGC
  17. 711

    FS: President HR 2510. Expanded TX/RX 'Chips witch' otherwise original

    I would jump on it if it was a 2600 or 2830
  18. 711

    armadillo amps?

    Showtime has resurfaced, buyers beware. He's trying to trade a Cocaine Charlie 32 pill.
  19. 711

    Radios and equipment for sale

    How much for the Lincoln?
  20. 711

    Top Gun CP-1 Undressed

    Values were different but nice to know the diode make up. Forward voltage is 0.255v and forward bias was 82k reverse bias 19M. Added a switch to bypass.