At 12/29/2007 14:33, you wrote: >At 02:29 PM 12/29/2007, you wrote: > > >My 2 friends just linked their 440 machines together using an Alinco > >DR-235T at each end for the link. They did find that there is a delay > >in time in which the decoder takes to decode and release. They are > >going to fix this by using Audio Delay Modules in the controllers at > >each end of the link. Also, using a high PL tone should help the > >decoder decode faster. > ><----Nope. A delay board won't do a thing for the decode pickup time >and probably not for the release time either. > >And a using a higher tone probably won't help either. You're talking >microseconds in difference between a tone at the low range and one at >the top end. > >Ken
This reminds me of an experiment I did with a pair of the first Bendix/King (then just "King") synthesized commercial VHF HTs. I noticed that one could program a CTCSS frequency as low at 10 Hz, so I set up a pair using this tone, & they worked! The CTCSS decode speed wasn't that slow either. The reason was that the absolute decode bandwidth was just as wide at 10 Hz as it was at 100 Hz. Bob NO6B
