Sounds like good advice, thanks. Joe
---- Coy Hilton <[EMAIL PROTECTED]> wrote: > Call ComSpec tech support. They will tell you how to do it the right > way. They told me but, I forgot or lost the paper that I wrote it > down on. > > AC0Y > > > --- In [email protected], "skipp025" <[EMAIL PROTECTED]> > wrote: > > > > Hi Joe, > > > > > Joe <k1ike_mail@> wrote: > > > I decided to try the method someone suggested for > > > keying the repeater transmitter encode PL on and > > > off with active COS. > > > > A very popular function to have working when using > > remote IRLP or Echolink link radios. > > > > > I switched the ground connection on and off to key > > > the TS-32 PL deck. > > > > Not a good practice... > > > > > This works, except that when the tone turns off > > > I get a sound that is best described as "squeege" > > > as it shuts off. I assume this is the oscillator > > > loosing voltage and the tone changing frequency. > > > Anybody else have this problem? > > > > There actually are/were tone burst circuits, which > > depended on the above mentioned operation. I've got > > some data sheets and circuit diagrams for them in > > my files. > > > > > I'm about to just go back to switching the PL > > > audio line and leaving the TS-32 on all the > > > time.. > > > 73, Joe, K1ike > > > > Better to just leave power applied and mute the > > encoder output using a portion of low pass filter > > U3 circuit. Use a small fet like the 2N7000 or > > the same VN10KM (also VN10LP) (same fet, different > > number) with a low on-resistance to mute the audio > > output line to ground at some place like the junction > > of U3A parts R35-C21 - or the input to the U3A filter > > atthe junction of parts R26-R27 & C20. > > > > Ground one of the mentioned locations when cos changes > > and the encoder output should halt. > > > > cheers, > > skipp > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
