Subj : Ham Radio Digital Modes
To   : Ed Vance
From : Richard Menedetter
Date : Tue Nov 07 2017 11:05 am

Hi Ed!

06 Nov 2017 19:55, from Ed Vance -> Daryl Stout:

 EV> I watch Television using a Digital TV Convertor box.
 EV> While I was watching a show I noticed the image froze for a moment and
 EV> I wasn't able to hear any sound until the freeze ended and thought
 EV> about You using D-STAR, VOIP and maybe other Digital Modes for Amateur
 EV> Radio.

Correct.
That is indeed a characteristic of digital encoding.
You have a perfect signal until the error correction is not able to cope with 
the bit error rate.
At that point you will have audio/video artefacts or even small outages 
(depending on the conditions).

On an analog signal you will hear/see degradation much earlier, but you will 
have some form of very staticy signal that you may be able to decode when you 
have very bad conditions.
On digital on those conditions you will have no service.

CU, Ricsi

--- GoldED+/LNX
 * Origin: ?troffeeriuqertahtsenilgatetahuoytnod (2:310/31)

.