Thanks for the explanation of scanning. I don't think the scanning part of this will be in the cards for me right now, but I am still interesting in participating.
"I agree with Charles, ALE does have a "lid" factor in that you can transmit automatically and on top of another QSO. I am advocating that we do this will in the shack and listening first." I could not agree with Charles and you more on this point. If the busy channel feature is lacking then, being in the shack when operating this mode is the only right thing to do. Personally, automatic operation doesn't do it for me. Each to his/her own. I just find it more entertaining when there is a live human on the end. philw de ka1gmn On Sun, Nov 22, 2009 at 10:01 AM, Andy obrien <k3uka...@gmail.com> wrote: > > > In Multipsk and PC-ALE there are settings that enable the user to select > the scanning rate . The scan rate needs to match the typical length of a > "sounding" or a individual call. . By that I mean, if a station sounds for > 15 seconds but you change frequency every 30 seconds, you are going to miss > a call and defeat one of the main features of ALE. Typically, a 2 seconds > per channel scan rate is quite sufficient and all rigs that I know of can do > this. Sometimes I slow it down and choose a 5 second per channel option, > this works well too. I am puzzled by the fact tha ALE default digital mode > is accepted as not be very robust but I have seen it detect basic callsigns > from a very weak signal while scanning quite fast. > > If your rig is scanning the 80.40,30,20,15,17,12,10 ALE data channels that > is 8 channels covered in 16 seconds. The next issue , if doing multiband > scanning with a non-resonant antenna, is can your antenna tuner detect you > have changed frequency and match the new frequency quickly enough (before > transmit begins). My TS2000 can, my TS440 cannot . The TS440 antenna tuner > does not memorize settings and thus has to take time to match each time, > that is too long for ALE. > > Please note that I agree with Charles, ALE does have a "lid" factor in that > you can transmit automatically and on top of another QSO. I am advocating > that we do this will in the shack and listening first. > > Andy K3UK > > > > On Sun, Nov 22, 2009 at 10:02 AM, Phil Williams <ka1...@gmail.com> wrote: > >> >> >> "This is not really correct with PC-ALE and a modern receiver that has >> a internal antenna tuner. I have used PC-ALE with a TS2000 and an >> Icom 746 Pro and the tuner in both rigs memorizes settings for each >> transmission" >> >> How fast does the rig need to scan? >> >> philw de ka1gmn >> > > >
