Dear LF,
Has anyone any
ideas or suggestions on a resource for calculation of a link budget for WSPR
over a set distance?
As it seems I can
get up to GM4SLV reasonably consistently on my current antenna/power setting
with a SNR of around -22dB and the limit for WSPR is around -30dB then is there
a means for roughly estimating or indeed accurately calculating the Expected
Max Range (EMR) at that power setting and antenna configuration?
Clearly, there are
differences between separate Rx stations but if one knows the ratio between two
or more Rx stations then it should be possible to pro-rate or estimate at least
the signal strength at a given Rx based on its performance with other known
signals.
If I can do 916km
with an SNR of say -22dB then how much further would the remaining 8dB or
so of WSPR detection get me, assuming the other Rx has the same capability as
GM4SLV and if their capability is different, then is it fine to factor for the
dB difference over known paths/signals?
Thanks in advance
for any answers or pointers and best wishes to all for a great 2010
With best regards
Jim
Dr. James Cowburn G7NKS
E [email protected]
