To: digitalradio@yahoogroups.com
Subject: Re: [digitalradio] Using 8FSK ARQ in PCALE (Re: ALE QRM is
minimal)
Walt and group,
My understanding is that the 64QAM mode of the DRM programs being used
by SSTV operators does not work well on HF frequencies unless you have
near perfect conditions.
What
To: digitalradio@yahoogroups.com
Subject: [digitalradio] Using 8FSK ARQ in PCALE (Re: ALE QRM is minimal)
As a convenience, many of the amateur radio ALE operators with PCALE
have been using the built-in 8FSK modem for texting. It uses the same
8 tones and baud rate that the main ALE part of the system uses
Walt and group,
My understanding is that the 64QAM mode of the DRM programs being used
by SSTV operators does not work well on HF frequencies unless you have
near perfect conditions.
What are the opinions on the how well multipath and difficult
conditions are handled by these different
As a convenience, many of the amateur radio ALE operators with PCALE
have been using the built-in 8FSK modem for texting. It uses the same
8 tones and baud rate that the main ALE part of the system uses for
calling. For keyboarding/texting, we often use the feature called DTM
(Data Text Message)
