I dunno about that. I worked and confirmed well over 100 countries back
in the 80's. There was a .25ms turnaround time that always seemed to
work no matter the distance. It was always a subject of discussion. I
was always amazed to get a comment from a DX station like "Your my first
US QSO"!. The DX stations flocked to it for the uniqueness back then,
much they way they do today to new modes, like JT-65. The way the
station suddenly started pulsing seemingly by itself, was a very
exciting thing.
I remember working several mailboxes back then because it was so new.
Don was right about ST2AA being a regular and workable most days.
Packet was terrible for HF but some went to it and then Pactor came
along. New modes always seemed to excite and after a few years Amtor
QSO's disappeared. It was always perfect copy all the time because of
the "handshake". Handshake meant the two stations were linked and
talking to each other. Like we weren't even there.
Oh well, another time and another place.
Bill Marx W2CQ
On 4/29/2011 6:52 PM, Bill, W6WRT wrote:
> ORIGINAL MESSAGE:
>
> On Fri, 29 Apr 2011 13:49:13 -0700, Kok Chen<chen@mac.com> wrote:
>
>> Not many software modems implement Amtor.
> REPLY:
>
> And it's just as well. AMTOR has one fatal flaw for DXers: The original
> designers did not take into account how long it takes for a radio wave
> to go halfway around the earth and back. AMTOR's "turnover" function is
> too quick. If you want to try kind of mode, PACTOR is much better in
> this respect.
>
> 73, Bill W6WRT
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