Jim
The full power sequence is a solid s9 on the meter. I can hear all of
the 5 second dashes - s8, s7,s5, s3 and s1 on meter. Rather peculiarly
each of the dashes has long 'rounded' on and off keying edges sounding
like deep QSB - but is not, it is on the transmission... The keying of
beacon itself is a little soft but not so severe. The lowest power tone
is just above my noise level - 30dB down on 100mw = 0.1mW?.
In Bracknell IO91PJ
73 Dave G3YMC
On 9 Jun 2009 at 20:48, James Moritz wrote:
> Dear LF Group,
>
> As art of continuing investigations into antennas, grounds, etc., I am
> running a beacon at the moment on 503.5kHz - I am testing a small "/P"
> antenna similar to what G3CWI proposed to use a couple of weeks back. It
> is a 9m high "umbrella" with 4 x 5m long top loading wires sloping at
> about 45degrees. Ground system is 4 x 20m radial wires.
>
> The beacon is transmitting an 8wpm CW identifier, followed by five 5
> second dashes at reducing power levels in steps of 6dB. The maximum ERP
> is somewhere in the region of 100mW ERP. The sequence repeats every 2
> mins roughly.
>
> I'll leave it running until after dark at least - any reports would be
> very welcome.
>
> Cheers, Jim Moritz
> 73 de M0BMU
>
>
http://www.davesergeant.com
|
