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Read more about the article RF Sampler

RF Sampler

  • Post author:s21rc
  • Post published:July 27, 2024
  • Post category:DIY/Ham Radio
  • Post comments:0 Comments

A DIY RF sampler with -50db sampling out, most beneficial for measuring the output of HF radio PA section using Spectrum Analyzer. Also can be used for Pure Signal transmission.

Continue ReadingRF Sampler
Read more about the article K9AY Receive loop antenna

K9AY Receive loop antenna

  • Post author:s21rc
  • Post published:July 16, 2024
  • Post category:DIY/Ham Radio
  • Post comments:0 Comments

In 2022 I made one 200m long beverage antenna for our IOTA (S21DX, 2022) which was around 2m high from ground. For some reason (most probably very high conductive wet…

Continue ReadingK9AY Receive loop antenna
Read more about the article Homebrew 3 elements 10m Yagi antenna

Homebrew 3 elements 10m Yagi antenna

  • Post author:s21rc
  • Post published:March 9, 2024
  • Post category:DIY/Ham Radio
  • Post comments:1 Comment

When S21DW heard that I am planning to make an 3 elements short beam for 10m to replace my 2 elements 10m antenna he immediately jumped to make it asap.…

Continue ReadingHomebrew 3 elements 10m Yagi antenna
Read more about the article S21RC Digital Interface Rev 3.0 (Ham Radio – Computer)

S21RC Digital Interface Rev 3.0 (Ham Radio – Computer)

  • Post author:s21rc
  • Post published:December 15, 2023
  • Post category:DIY/Ham Radio
  • Post comments:0 Comments

Fully isolated interface between Radio and Computer for various digital mode.Radio Side connection:Gnd (isolated from Computer ground)Audio IN/OUT (Isolated by audio transformer)CAT RX-TX and/or CIV: (Isolated optically)PTT and COS (Isolated…

Continue ReadingS21RC Digital Interface Rev 3.0 (Ham Radio – Computer)
Read more about the article Dead ICOM IC-7000 radio, Click Click from the relay

Dead ICOM IC-7000 radio, Click Click from the relay

  • Post author:s21rc
  • Post published:December 11, 2009
  • Post category:Ham Radio
  • Post comments:0 Comments

This was posted on my old website back in 2009. One lovely sunny weekends morning I found my 6 months old ICOM IC-7000 is not turning on. Something is wrong,…

Continue ReadingDead ICOM IC-7000 radio, Click Click from the relay

Projects

  • RF Sampler
  • K9AY Receive loop antenna
  • 5 Band LPF for HF Amplifier (up to 200W)
  • Homebrew 3 elements 10m Yagi antenna
  • S21RC Digital Interface Rev 3.0 (Ham Radio – Computer)
  • SSPA Controller V2.1.x LITE
  • S21RC Digital Interface Rev 2.0 (Ham Radio – Computer)
  • S21RC SSPA Controller Hardware Rev 3.x
  • S21RC LDMOS SSPA Controller V2.0
  • Dead ICOM IC-7000 radio, Click Click from the relay

Recent Comments

  1. Rabby on S21RC SSPA Controller Hardware Rev 3.x
  2. Vlad W6BVB on S21RC SSPA Controller Hardware Rev 3.x
  3. Sadi on Homebrew 3 elements 10m Yagi antenna
  4. Wayne on S21RC SSPA Controller Hardware Rev 3.x
  5. Rabby on S21RC SSPA Controller Hardware Rev 3.x

About Me

About Me

Fazlay Rabby

Adventure enthusiast and Ham Radio Operator.
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My Ham Shack

  • Finding impedance and velocity factor  of an unknown Coaxial cable using nanoVNA
    Finding impedance and velocity factor of an unknown Coaxial cable using nanoVNA
    August 21, 2024/
    0 Comments
  • RF Sampler
    RF Sampler
    July 27, 2024/
    0 Comments
  • K9AY Receive loop antenna
    K9AY Receive loop antenna
    July 16, 2024/
    0 Comments
  • 5 Band LPF for HF Amplifier (up to 200W)
    5 Band LPF for HF Amplifier (up to 200W)
    May 27, 2024/
    0 Comments
  • Homebrew 3 elements 10m Yagi antenna
    Homebrew 3 elements 10m Yagi antenna
    March 9, 2024/
    1 Comment
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