Owen Duffy wrote in
:


Quiet sun radio noise is often used for measurements of radio
receiving systems. The radio flux from the quiet sun is a known signal
in that it is measured and reported at observatories around the earth,
and therefore provides a basis of assessment of radio receiving
systems.

I have been playing around with a little online calculator to
calculate interpolated recent solar flux data for amateur radio UHF
and microwave bands from published observations.

It is at http://www.vk1od.net/qsrf for those who may find it useful.

There was a time once....

I used to have an FT-221 tricked out with a hot front end. Solar noise
would run the S meter up to well over the S9 mark and you could even see
the galactic plane passing through the antenna pattern. Needless to say,
it heard well on terrestrial 2m SSB.

--
Dave Oldridge+
ICQ 1800667