I can't really "do" MF at present but I know that when my LF WSPR
transmissions were "lop-sided", that is the I and Q channels in SSB
mode were rather different, only one station was able to decode my signals.
(My transmitter will not work above LF and reception is very noisy,
rather strange for a semi-rural area).
Hugh, M0DSZ.
On 05/12/2015 18:16, mal hamilton wrote:
Hugh
For acceptable results you need a REAL antenna. I notice that antennas
in use in the UK are useless for weak signal reception. Only one stn
in the UK can decode my signal.
For MF using the proverbial joy stick antennas are like using a match
stick dipped in water
mal/g3kev
-----Original Message----- From: LineOne
Sent: Saturday, December 05, 2015 12:08 PM
To: [email protected]
Subject: LF: Variation in my Rx signal reports on LF
If anyone noting my signal reports, WSPR in particular, is puzzled by
large variations, this is because I am switching between aerials. Best
results are on the main Tx aerial into my R5000 but, failing a suitable
giant relay, I have to use experimental systems instead. Thanks to
GW0NOS in particular I am able to compare results.
The latest aerial is a long ferrite rod with high-gain amplifier, end on
loss is about 10dB. Due soon is a vertical strip in a tube, I understand
height must be the main factor with these.
Hugh, M0DSZ
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