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Recent content by Jim5570091

  1. Jim5570091

    Sark 100 antenna analyzer test frequency

    I would verify the tolerance of the resistors are spot on. If you have a dummy load it will work for the 50 ohm
  2. Jim5570091

    Sark 100 antenna analyzer test frequency

    I used 1/4 watt but I don’t think it matters.
  3. Jim5570091

    Sark 100 antenna analyzer test frequency

    PL259 each resistor value. Solder one lead on center pin and the other to the shield housing. I may or may not have one of them in my parts bin. If I can find one I’ll post a picture.
  4. Jim5570091

    Sark 100 antenna analyzer test frequency

    I know my antenna system is spot on. When I check it @40.810 it’s 49 ohm but 27.205 is off the chart. I built the cal connectors and calibrated it when I first got it. But never figured out the test frequency discrepancy‍♂️
  5. Jim5570091

    Sark 100 antenna analyzer test frequency

    Thanks. I have this manual, maybe my issue with it wasn't fully understood. Look at the picture attached. The sark is showing the test frequency is 40.810 mhz. Connected to a frequency counter it is actually putting out 27.206 mhz. they should match. Right?
  6. Jim5570091

    Sark 100 antenna analyzer test frequency

    Does anyone know how to calibrate the test frequency to match the display frequency on this cheap analyzer?
  7. Jim5570091

    X-force 10 pill 2 pill section unbalanced

    I have a x-force straight 10 pill converted to HG 2879 it seems to have a 2 pill section that falls off after it warms up. Not excessive heat. It looks like it has cheep 104 feed back caps. If one of them falls out of tolerance when warmed up will that cause that section to fall off? If so what...
  8. Jim5570091

    Eightwood RG400

    I’m 100% sure it’s is a knock off. It has really good reviews. Just looking for someone who has used the specific eightwood brand. I have ordered 40 ft of it to make up some jumpers. Have them made and installed. They seem. To have great shielding. Really good heat resistance as well.
  9. Jim5570091

    Eightwood RG400

    Yeah I seen a BBI review on RG400. Not sure the brand he was referring to. I was gonna replace all my jumpers in the shack. His YouTube shows the way he installs the pl259 ends as well. Thanks 73’s
  10. Jim5570091

    Eightwood RG400

    Has anyone used this coax? Is it good quality? https://a.co/d/0bCnVeb1 This is a Amazon link.
  11. Jim5570091

    Smith chart and amplifier input/output tuning.

    On the out put transformers that is.
  12. Jim5570091

    Smith chart and amplifier input/output tuning.

    What value metal clads are standard for HG 2sc2879 16D08. My box had Toshiba in it before and had 1000 pf. Should they be a different value? Like 1200pf.
  13. Jim5570091

    Smith chart and amplifier input/output tuning.

    Those are better than gold nuggets.
  14. Jim5570091

    Smith chart and amplifier input/output tuning.

    Copy that. I’d just trying to work out a way to know if all that combination is correct by testing.
  15. Jim5570091

    Smith chart and amplifier input/output tuning.

    I managed to get this job completed. Photos is completed results. Turns out I was chasing a bad coax and meter. Go figure. Probably what popped the pills originally. But my goal is to understand how to do input/output tuning. On amplifiers of this design.