Hello Dick,
Thanks for the QSO this morning. I would never have thought that the
program runs on a machine with 16 MB RAM !
About the overloading problem: I have similar problems here when strong
stations are on the band. There is:
A) a certain spectral leakage from the FFT calculation, which is normal,
but usually in the 10-Hz-range
B) deafening of the receiver, which usually much worse and cannot be
cured by post-processing.
I can imagine that PA0BWL (hello Wil !) is extremely strong at your
location. He is also one of the strongest signal here.
The IC706 which use a the club (after the 136 kHz <-> 10 MHz
transverter), the S-meter usually shows nothing on the LF band, only
occasionally S1. If it shows S9, the sensitivity of the whole system may
be decreased by 54 dB (worst-case), because most comercial receivers
actually show the AGC voltage as fieldstrength indicator. To get away
from that problem would mean building a receiver without AGC, which
would require an enormous dynamic range (it can be done, though, using
software-defined radio principles).
But usually, there is so little activtiy that we are happy to see
anything at all ;-)
BTW Jeff F6BWO was calling you too, but I guess he was a bit weaker than
usual. Nice to have some regular CW activity too - worked G3XDV again
after a very long time.
Best regards,
Wolf DL4YHF / DK4U (on LF) .
Dick schrieb:
Hello all,
I've been (and will be on again this afternoon) on DFCW 137.7kHz.
I have some trouble with my computer, which is an laptop with only
16MB workmemory.
So, therefore it often takes some time to switch from RX to TX
(Speclab to QRSS window)
I also haven't optimized the settings off spectrum Lab, not able to
read weak signals.
I saw DK6NJ?? calling me, and later somebody else, but couldn't get
the dashs and dots all
that clear on my screen.
Also have problems when a strong signal is on the band.....it blocks
other weak signals that are within 50Hz or so.
Hopefully this is just a way of wrong computer settings,hi.
I'll go on now
73
Dick, PA4VHF
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