Topband: ...Recovery time???
w8ji at contesting.com
Mon Feb 19 08:36:59 EST 2007
>> I use a Mark V with no filters at all into an inverted V
>> with the apex at 55 ft, scary huh? Well anyway, not being
>> an electrical
>> engineer, I notice the recovery time I guess you would
>> call it in simplex
> pile ups
>> after I call, and begin to receive..it seems like the
>> receiver is deaf for
>> fraction of a second and do not hear the station coming
>> back to me, than
>> second request I hear perfectly.
I looked at my 1000MP MK V's (actually two of them) just by
on-the-air testing and didn't notice that problem, both in
VOX and QSK. I can hear any signal above noise floor below
25-30WPM dots between a string of dots on QSK. As a matter
of fact if I send a string of dots I can easily copy a 5 WPM
S-6 station while I'm rattling off the high speed dots.
I normally notice such things. Certainly that same problem
with the R4C's stood out like a sore thumb.
When I get time I'll put a MP MK V and a MP up and see what
they look like on the bench. I never use the regular MP on
the air, I just have it just so I have one to look at, so I
can't say how it is on the air.
Is everyone sure this isn't cause by an artifact from
switching something external? Say you drop a relay line and
the backpulse generates a click? Too much RF on a receive
Admittedly I did not use a scope, but neither fast AGC or
slow causes a problem by ear in my MK V's. I would thing by
all the people using regular MP's it would be a widely
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