----- Original Message -----
Sent: Friday, October 17, 2003 6:36
Subject: LF: Re: 136 acty
I´m rather impressed by your success on
receiving. Seems I am far behind you. However, it might depend on the
noiselevel. Here, next to Mainflingen, the noise is -90 dBm with BW=100 Hz in
the noisegaps. Antenna is umbrella 23m high with 325 pF on the top. How
abt the noise on your side?
It seems to me that I had better results
with a marconi only 12m high and only 120pF on top. With this
antenna, for example, I did copy G2LDO audiable. Not so with a loop of 1.8m
diameter, grounded or ungrounded.
vy73 de Peter, dj9dw.
----- Original Message ---
Some measurements today using a SIEMENS D2155
PEGELMESSER- 20Hz b/width
Antenna 80 metre perimiter loop parallel
resonated for 137 khz
Antenna disconnected -118db
-105db (no rf amplifier etc, just matching
capacitor to resonate)
This is fairly accurate but there is some
QRN rain static about.
The measurements on G3YXM signal a couple of days
ago was using speclab and was relative because it depends on the
RX AF setting for noise floor, but the relative measurement of 55db
of signal above noise should be authentic.
My resonated vertical has more gain over the
loop, will check sometime and let you know if interested. When I get more time
will measure both antennas at the same time and let you know.
The loop is probably a little quieter than
the vertical but the vertical is very good because of my low environmental
noise. Only rain static QRN bothers me like everyone else hi
73 de Mal/G3KEV