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Thanks for your response. I'd not heard of EZPAL before. It must be quite rare. Took a good deal of hunting to find a site with a wav file of the sounds such signals make over the air. I listened to this and found that the sound is a steady whirring, which is not surprising in a digital mode. These tend to give out noise-like sounds in their un-decoded forms. The signal I have been hearing on 14.320 MHz does not sound like this. It is a series of audio tone pulses, first in one consistent frequency for a time, then in another. I heard the signal again yesterday afternoon and looked at it on the O-scope. The tones each appear to be a simple sine wave. K3DCW has a wav file of an EZPAL signal at: http://www.k3dcw.net/index.php?p=1_4_Digital-Mode-Samples

[QUOTE="Bison1, post: 350268, member: 23932"] Thanks for your response. I'd not heard of EZPAL before. It must be quite rare. Took a good deal of hunting to find a site with a wav file of the sounds such signals make over the air. I listened to this and found that the sound is a steady whirring, which is not surprising in a digital mode. These tend to give out noise-like sounds in their un-decoded forms. The signal I have been hearing on 14.320 MHz does not sound like this. It is a series of audio tone pulses, first in one consistent frequency for a time, then in another. I heard the signal again yesterday afternoon and looked at it on the O-scope. The tones each appear to be a simple sine wave. K3DCW has a wav file of an EZPAL signal at: [url]http://www.k3dcw.net/index.php?p=1_4_Digital-Mode-Samples[/url] [/QUOTE]

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