On Thu, Jul 27, 2023 at 05:13 PM, Dan Croskrey wrote:
VARA FM, so far I know, does not listen for a clear frequency therefor does not detect collisions.
Dan;
"listen for a clear frequency" isn't the same as "collision detect", in the context of CDMA.?
As I pointed out earlier on this topic; ... VARA FM supports the busy-channel detection that is implemented in the Winlink Express VARA FM session¡ if there¡¯s traffic on the channel, the operator trying to connect must click the ¡°Connect Anyway¡± button.
This doesn't happen during ongoing sessions (as collision detection does), but it is a reasonably effective mechanism to prevent new station from interfering with on ongoing VARA FM sessions between other stations. I don't have a way to check this on VARA HF, but I'm pretty sure this functionality is also present in VARA HF and the corresponding Winlink Express VARA HF session.
Mark - AD7EF
Mark Davis