The "normal" or standardized modulation of PL tones is +/- 600 hetz... set and left alone...The "normal" or standardized modulation used by repeaters at a minimum is usually considered to be reliable is 20% or +/- 120 hertz.
Have a great day, --... ...-- Dale - WC7S in Wy > Hi all, > > There seems to be some debate about how much FM deviation is required for PL > tones used to activate repeaters. There's a wide range of deviation values in > use by transmitters, and various "standard" recommendations. The question is > how much is needed for reliable operation in the real world. > > Our objective is to set the default PL tone deviation in the K3 and KX3 to > the lowest level that works in virtually all cases (let's say 98-99%, since > there are always outliers). Setting it too high can result in the tone being > audible in receivers. > > If you have a K3 or KX3 outfitted with an internal 2-meter module (or an > external transverter on any repeater band), you could help us with this > experiment: just try reducing the PL DEViation value to the point where you > can no longer reliably key up your local repeaters. > > NOTES: > > 1. If you're doing this with a KX3, please use the current production > firmware (rev. 2.18) or later. Earlier releases may not have provided an > accurate PL DEV setting. > > 2. To adjust the PL DEViation, locate the FM DEV menu entry, then tap '1' to > switch to PL DEV. This applies to both the K3 and KX3. > > Thanks for the help-- > > Wayne > N6KR > > > > - ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com