Jeff,
I don't think most amps do this, but I know that some transceivers do
(e.g., the Elecraft K3 under some circumstances, due to its closed-loop
power control). There is also a psychological mechanism at work, I
think. At least in my case, I sometimes become aware of a very weak
signal calling me after the first few characters, at which point my
brain locks in on it. Finally, sometimes there is QSB which takes out
part of a call.
Operators have been told over and over ONLY SEND YOUR CALL ONCE! Well,
not every situation is a Bouvet Island pileup, and -- especially on the
low bands -- I would really like it if callers would send their calls
two or three times.
73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/
.
On 06/10/2020 13:24, Jeff in Mali: via Amps wrote:
In my pileups, I find that people often send their call signs only
one time. Most call signs are of the form XX#YY or XX#YYY. By the
time their sending gets to the #, their signal is strong enough so
that I can copy the rest of the call. i am wondering if it is a
common property of amplifiers that they take a finite time to reach
full power and that as people send their call sign, the first couple
of letters are being transmitted at less than full power? Do people
in the group have any experience with this phenomenon, or is it just
my imagination? I try to get people to send their call 3 times (QSZ
3), but someone has convinced a lot of operators that once is
enough. 73, Jeff TZ4AM
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