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The next weekend here in my city there is the our local
hamfest, so is the good time for buy some surplus receiver for the
LF.
I'm currently using my IC775 on LF, with an external power
supply, and it is a very good receiver on LF, the opposite sideband with a
signal of 9+50 is not audible!!and sensitivity is quite good.
But i cannot go all the time with this situation, 775 without
cover, no possibility to go on tx, so i need some LF receiver.
I'm loocking for the following equipment.
Racal 1792
RFT EDK series, 100-300-500
JRC NRD 525/535
Becouse this receivers are made in late 80, wich is the best
in terms of dinamic range, IMD, phase noise and sensitivity, in LF band, or is
better my 775!!!
73 to all from IK2DED.
NB Why the activity on 137 is so low in QRSS and
digital?
And wich is the best digital mode for LF?
After some test with Jason, no one station is using this mode
now, in qrss/digital the activity seems very very low, all the station is on
136.5 in aural cw.
For the station that is located in Central Europe and south
UK, this may be a good mode, but this not help the activity in other country,
like CT - SP - F - south I - former YU and former UA, with aural cw yes is
possible to made a very long qso also, but only with bigger station and antenna,
like i have tried in my contest station in Mantova, but how many of us are in
this condition???
We may count it on two hand, not more than ten!!
So i hope really more activity on qrss, digital, for help all
the average station, in all the Europe.
Use the 137 only on aural cw, for my opinion, is very
restrictive, and produce newcomers on the band only from the Central
Europe!
For digital, like many of us are using PA in class D, the mode
like PSK, Hell are not usable with this class without more complexity in
transmitter ( i have received saturday DF6NM and I5TGC in Hell, really funny
read the letters on the screen), so the best may be the IFK (like Jason), that
is perfectly usable with class D, that all we have.
Any opinion?
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