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  1. sp5it

    Ranger RCI69VHP

    To get more tuning range on COARSE more voltage on varicap diode is needed, but without schematic I can't help. Mike
  2. sp5it

    Ranger RCI69VHP

    Coarse and fine 12'o clock
  3. sp5it

    Ranger RCI69VHP

    What is freq in the latch?
  4. sp5it

    $1000 PDL II clone

    0.72m between frames? LMAO. Clarence C. Moore must be spinning in his grave. Mike
  5. sp5it

    $1000 PDL II clone

    Snake oil, besides that antenna gain is not in dB :cool:
  6. sp5it

    Uniden pc122xl no tx or rx

    What's the voltage on pin 1 and 3 of IC4? Voltage on Pin11 of PLL? Mike
  7. sp5it

    Anybody got the New President Washington NPC Mod?

    Show me schematic, I will tell you where.
  8. sp5it

    Looking for IC-746 service manual

    Hello. Anyone have paper IC-746 service manual and willing to help? I need this part of SM. Those floating on the web are useless. Thanks.
  9. sp5it

    Uniden pc122xl no tx or rx

    Replacing all capacitors without diagnosing is not so smart move :) Mike
  10. sp5it

    Uniden pc122xl no tx or rx

    PC122 is brilliant little rig. Worth repair. Mike
  11. sp5it

    Uniden pc122xl no tx or rx

    Find someone who have and let him do the work. Mike
  12. sp5it

    Studio Mic experiment

    Replace C152 with 4.7uF/16 and apply audio to that capacitor, but break connection between C152 and R276. Lift one capacitor leg is fine. Works in AM only. For SSB or FM is different injection point. Mike
  13. sp5it

    Studio Mic experiment

    Nice, but now radio limits you. I inject audio directly to series pass regulator. Mike
  14. sp5it

    Using another radio as a monitor...BUT...

    What is AGC setting on 7300? I was listening myself a lot of times on 7610 which is almost the same regarding front end and it was clear. Mike
  15. sp5it

    Stryker 447 HPC mod?

    In AF path he put resistor to the ground, it just cut high tones. Mike
  16. sp5it

    20 Meter "Frankenstick" Antenna

    You can make it with silver, but it still will be shortened antenna. Not worth the effort IMO. Mike
  17. sp5it

    RCI-2980 Final Replacement

    I put a drop of the paste and bend legs of diode to make it stick to transistor. Mike
  18. sp5it

    RCI-2980 Final Replacement

    I use 1n4148, but must stick to transistor surface. Mike
  19. sp5it

    Compressor

    If you skip 7808 it can be powered directly from Icom/Kenwood mic socket. Tested on mine TS-870 and IC-7610. Mike
  20. sp5it

    Compressor

    For voice I would suggest DSB clipper: https://www.pa0fri.com/Diversen/DSBclipper/dsb-clipper.eng.htm I've built a few of them, work miracles. Mike
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