tp-4

Along with the TRX-1 here is the inside gander of the TRX-2. Do not try this at home children, I am not responsible if you fry your radio or void your warranty. I do not know how forgiving Wendy is... Here is the bottom side of the board. Notice the copious shielding, especially on the RF...

I did this so you don't have to. Do not void your warranty. if you do it ain't my fault! While the TRX-1 discriminator audio is available from the earphone jack without modification it is also available from the infamous TP-4 of GRE and RS heritage. The discriminator audio from this point works...