At 11/28/2006 12:31 PM, you wrote: >I have taken a UHF transmitter and combined it with a VHF receiver for >a crossband split. The very maximum deviation that I can obtain from >the radio is about 1.5 KHz. This is with the pot turn all the way >up. Mic high is being fed into a 1.0 MFD cap through a 15K resistor >to the high side of the volume control. The audio is clear, just not >all that loud. > >Mathew
I think the output Z of VOL/SQ HI is too high to use for direct feeding the MIC HI input of the G.E. TX. In addition, you need to de-emphasize the audio as the VOL/SQ HI audio is still pre-emphasized & the TX audio is also pre-emphasized again. This means you need a buffer (op)amp to de-emphasize the audio & drive the 600 ohm mic input. Bob NO6B
