Re: [digitalradio] Busy Channel Detection

2007-10-03 Thread Rick
Thanks for confirming this, Andy, When I monitor the ALE frequencies, particularly the 14109.5 frequency, I do hear a fair amount of ALE throughout the day, and sometimes other modes. I admit that the stations that I am hearing are the same ones over and over and over. Generally speaking

Re: [digitalradio] Busy Channel Detection

2007-10-02 Thread Rick
Have other ALE users found that they could not transmit on a busy frequency when using PC-ALE? (Note: there are no channels on HF amateur radio frequencies except on 60 meters which prohibits ALE and digital operation of any kind). Perhaps I have things set up wrong, but I did a basic test of

Re: [digitalradio] Busy Channel Detection

2007-10-02 Thread Andrew O'Brien
I have found that I could NOT transmit once. This was during the presence of a strong broadcast band station in the 40M band. I then tested by sounding on top of WWV, a strong SSb signal and a strong AM signal, each time PC-ALE attempted to transmit. Thus , I conclude that I need to be present

[digitalradio] Busy Channel Detection

2007-10-01 Thread expeditionradio
Andy K3UK wrote: As Bonnie mentioned last week, ALE has no busy detect for none ALE signals. So yes, Soundings and certain other aspects of ALE cause QRM. Hi Andy, A few weeks ago, during the discussion about busy detectors, I described some of the different busy detect systems that are

[digitalradio] Busy Channel Detection

2007-03-08 Thread expeditionradio
Automatic channel busy detection has been standard in ALE transceivers for many years. These are transceivers that have ALE embedded in the microprocessor inside the radio, and they don't need an external computer. As an example, my Icom IC-F7000 HF ALE transceiver has a very good busy detector