I don't post over here much any more but would like to share this with every one..
Ones you go SDR waterfall you never go back.
It worked so well in my Kenwood TS-2000 I had to do it to my Icom IC-7100 so I Installed an RF Tap buffer and it works well from HF TO UHF
This is tapping in to the RF chain not the IF and you use software like omni-rig to sync every thing up together.
I tapped in to the PTT line and Because the PTT line is only 6v and is pulled to ground to transmit I can't have a load on it or it will key the Radio I put a Transistor on the PTT line is in an emitter follower config with a 5.1K resistor on the base.
because the voltage coming out of the Transistor is to low I need to get that up so the 5v is then turning on an optocoupler that will pass the 12+ volts that I have current limited with a 500ohm resister to 9+V for the RF Buffer.
https://kd2c.com/hi-z-tap-boards
Ones you go SDR waterfall you never go back.
It worked so well in my Kenwood TS-2000 I had to do it to my Icom IC-7100 so I Installed an RF Tap buffer and it works well from HF TO UHF
This is tapping in to the RF chain not the IF and you use software like omni-rig to sync every thing up together.
I tapped in to the PTT line and Because the PTT line is only 6v and is pulled to ground to transmit I can't have a load on it or it will key the Radio I put a Transistor on the PTT line is in an emitter follower config with a 5.1K resistor on the base.
because the voltage coming out of the Transistor is to low I need to get that up so the 5v is then turning on an optocoupler that will pass the 12+ volts that I have current limited with a 500ohm resister to 9+V for the RF Buffer.
https://kd2c.com/hi-z-tap-boards
