I have a Retro-75. It want to install an S-meter so I was thinking of taking the 6 MHZ IF and making an attempt at installing a homebrew S-meter. I 'm not looking for accuracy but just relative signal strength and something to look at beside the LED I have with my Retro. So the question is, how should I approach this? I'm thinking of some sort of buffer to pick off the IF signal so as to not load the IF section down then rectify signal and filter it to a DC voltage and feed it to a meter. Any thoughts suggestions?
For those interested in the receive section schematic of the Retro75 see page 9 at link below:
http://smallwonderlabs.com/Retro-75_Instr.pdf 
