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  1. SuperLid

    BinaryRock

    In regard to re-ordering boards, I can't count how many engineers I know, that have been down that road, too many times, so don't feel bad about it. When you are all done, you need to measure phase noise. Have fun! SL
  2. SuperLid

    Siltronix SLM-100 Bi Linear Amplifier

    You could approximate, based on turns count, spacing and diameter, or Motorola application notes. Try posting a photo of the coil in question here as well.
  3. SuperLid

    Carl Built 400HDHG Amplifier / 2SC2879 Wattage Help

    Yes you are, for real.
  4. SuperLid

    Carl Built 400HDHG Amplifier / 2SC2879 Wattage Help

    800-850 measured with what? What mode? What is the level of the second and third harmonics?
  5. SuperLid

    Carlbuilt 400HD vs C400 vs CM400

    If it has an FCC ID, start there. If it doesn't, it's most likely junk. Ameritron, Metron, Cubic, Ten-Tec, TPL, are old school solid state. Modern day LDMOS, do your research, plenty out there. If the amp uses HG devices, it is trash.
  6. SuperLid

    Lafayetts Telstat 140 SSB now just low power

    Can you post photos of the pulled parts?
  7. SuperLid

    Carlbuilt 400HD vs C400 vs CM400

    This is on my bench today
  8. SuperLid

    Lafayetts Telstat 140 SSB now just low power

    What was in the radio prior
  9. SuperLid

    Lafayetts Telstat 140 SSB now just low power

    Were the driver and final original. or....???
  10. SuperLid

    Carlbuilt 400HD vs C400 vs CM400

    Not from what I have seen. Horrible construction, the cheapest parts possible and oscillates like a kazoo, when driven below recommended limits. Spurs-a-plenty. But, he says, his amps don't spur. Must be some kind of voodoo in here that makes his junk special.
  11. SuperLid

    Carlbuilt 400HD vs C400 vs CM400

    The bias he uses is class B schottky diodes and resistors. Garbage amps.
  12. SuperLid

    Carlbuilt 400HD vs C400 vs CM400

    His bias circuit is crap. Schottky clamping diode/resistors
  13. SuperLid

    unidentified module

    They also made their own with their name on them, as well as early 70's Realistic. They were high quality.
  14. SuperLid

    unidentified module

    6241 is Hitachi SSB
  15. SuperLid

    unidentified module

    Carrier oscillator/clarifier from SSB Hitachi (maybe Sears), the connectors look very Hitachi to me. I have probably seen it before, but can't recall.
  16. SuperLid

    My $20 Find - Cobra 142GTL & Amp

    Power switch, AC/DC switch, fuses.
  17. SuperLid

    Pll02A crystal info needed.

    There are methods to measure what you need, such as load capacitance. You need to learn how. Maybe, your Chinese crystal house knows how and is equipped to perform this. Send them the test samples from a working radio.
  18. SuperLid

    Pll02A crystal info needed.

    I understand. You may need to pull the crystals from a working radio and test/measure.
  19. SuperLid

    Pll02A crystal info needed.

    Now, it sounds as if you are not looking for one crystal, which is how I interpreted your post.
  20. SuperLid

    Pll02A crystal info needed.

    Custom crystals are very expensive and limited to one vendor in the US. Their quality has been hit or miss for decades. If it was me, I would explore DDS VFO, not crystals.
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