[amsat-bb] AO-85: Tone or no Tone for SSTV

Andrew Rich vk4tec at tech-software.net
Wed Aug 30 13:18:16 UTC 2017


What's the audio bandwidth of you sstv ? 


Sent from my iPhone

> On 30 Aug 2017, at 11:11 pm, Roy Dean <royldean at gmail.com> wrote:
> two questions:
> According to Amsat website, 67Hz tone is required for a couple of seconds
> to activate repeater.
> Once the repeater is activated, does it still require the tone every couple
> of minutes to stay on, or does it only start the timer after normal
> ("un-toned") activity stops?
> Will constantly sending the tone during SSTV Tx mess with the SSTV Rx?
> I'm planning on eventually trying my own image, and want to be sure I don't
> waste 36 seconds of valuable airtime.
> -Roy
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