Wery good description Karl,
many thanks again.
Tony
--
Tony Schonfeld
http://www.f5git.ampr.org
Karl F. Larsen a �crit:
> It was asked how AMTOR and PactorI compare in terms of relay
> closures. I got out the ARRL Handbook circa 1996 and found that AMTOR
> sends 3 characters and then waits a Recieve Window (240 ms) and sends
> either the same data again, or if it recieves an ack it sends the next 3
> characters. I think a character is 8 bits.
>
> Pactor has 2 data rates of 100 and 200 baud. The data is 10
> characters or 24 characters. Under good conditions where 200 baud is
> established, to tansmit 100 characters a Pactor transmitter is keyed 4
> times if the data is recived.
>
> AMTOR will key 33 times under the same good conditions. So it's
> obvious Pactor is easier on the transmitter under good conditions.
>
> Consider horrible conditions. AMTOR will work IF it can get 3
> characters acked once in a while. Pactor must get 10 plus a header and crc
> acked and that may not work. There will be some point at which Proctor
> will give up while AMTOR continues to work although very slowly.
>
> In summary your transmit relay will like Pactor...:-)
>
>
> Best wishes
>
> - Karl F. Larsen, [EMAIL PROTECTED] (505) 524-3303 -
--
Tony Schonfeld * DDSIS 38 *
Email: [EMAIL PROTECTED]
Phone: -33- (0)476268900
