Thanks Bob Now that I look at the circuit more I am sure you are right.
I was getting some false decode with no PL on the input signal and thought it might be keying on too much signal.
I'll take it from here. Again Thanks Gran K6RIF At 11:19 PM 4/4/2007, you wrote:
They want the input to be high enough so limiting occurs after the low-pass filter. That seems to happen with their test signal of 100mV RMS input, so your 800mVP-P (around 280mV RMS) is more than sufficient. There may not be a maximum limit, but I can't see any radio's discriminator output giving you more than a few volts RMS. The real limiting factor is the power supply voltage on the low-pass filter and how much distortion you will accept. Bob M. ====== --- Gran Clark <<mailto:k6rif%40cox.net>[EMAIL PROTECTED]> wrote: > Hi All > > Interfacing a GE Master II to a TS-32 for PL decode. > Comm Spec > gives a 100 mV RMS test spec for troubleshooting but > they don't give > me a input minimum or maximum. At present the > discriminator output > is 800mVP-P with about a 200 mV RMS value. My knee > jerk is that this > is about 8 to 10 times too much. > > Thoughts? > > Gran > > K6RIF __________________________________________________________ 8:00? 8:25? 8:40? Find a flick in no time with the Yahoo! Search movie showtime shortcut. <http://tools.search.yahoo.com/shortcuts/#news>http://tools.search.yahoo.com/shortcuts/#news
