Good point's john .
My point was that Dave has said more than once that he struggles to be
heard, despite receiving other more distant stations with seeming ease<<<
But that's the point, this band demonstrates the concept of 'skip
distance' quite elegantly, second only to 6 mtrs, The transmission losses
at this frequency seen to be quite low, but if your out of the skip distance
, then even more power will not resolve the situation for semi local
stations
'We' who live close to each other either get everything or nothing at all,
those who live a little further a field ,no pun intended, will receive
nearly all stations on a regular basis..
'water water everywhere and not a drop to drink'
However...on 500kHz the receiving stations are where they are! If you
want to work what you hear you must approach reciprocity of ERP,
considerations of local noise floors aside.<<<
The transmission losses at this frequency seen to be quite low, however,
domestic generated noise levels appear to be distortional high, which is
unfortunate, as the adage goes 'if you can here them, you can work them'
may not actually stand up to investigation , path losses may not be
reciprocal , and the noise floor at the distant station may well be
significantly higher
For example, the s-meter on my R5003 , is calibrated in sinpo units , 0 > 5
, connected to my atu the receiver when in 'usb' (2.4 khz) reads a
constant '3' on the meter uniform background noise. The same setup 0.5 / 1
on 80 mtrs . It would take a significant increase to address this situation,
which I fear will exist at any 'urban' location.
We shouldn't be afraid of the engineering needed to generate highish
powers, nor feel that it's against the spirit of QRP to do so.<<<
25 watts looks to be a reasonable feed to a small system to reach
something in the region of 100mW , For a lift of 'one' s-point @ 6dB that's
up to 100 watts and as can be observed during the many cw qso's signal
outages look to be in the ratio of approx 3:1 20 seconds good signal in
every 60 , one s-point is not going to decrease that by very much ! dx
reports have been quite consistent , with good copy , , flutter replacing
the deep qsb observed at 'close' range.
May be we should regard this as a 'Digital band' in the true sense of the
word ..
G ..
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