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Old December 27th 07, 06:11 PM posted to rec.radio.shortwave
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First recorded activity by RadioBanter: Apr 2007
Posts: 336
Default chirps or sweepers around 4800 kHz reprised

Barnard Peters wrote:

On Tue, 25 Dec 2007 21:33:00 -0600, msg wrote:


snip

The power of this transmitted signal is only 40 watts."

Any amateur doing QRP would envy the punch of this signal at only 40w if
this is truly the source ;-)



I've had the initial researchers who developed CODAR confirm this signal
years ago. They could not believe the propagation as I was over 1000miles
from the test site. Unfortunately, now that it's in full commercial
deployment, there seems to be hundreds of sites on several bands. Highest
I've heard has been 19Mhz.

I've tried to file a complaint with the FCC but unfortunately there are
no legal avenues as it has been approved by the FCC. Perhaps the ITU can
take complaints as this signal seems to block international broadcast?

It would not be so bad if these things would ID at the top of the hour so
at least propagation could be tracked.


Indeed, most every other non-covert automated radiator on LF/HF/VHF is
required to ID so why not these? It appears that the commercial systems
employ software control of the RF sections (probably not SDR however) so
it would probably not require hardware retrofits to add ID. How about an
online petition with verifiable signatures sent to members of congress
involved in oversight?

Regards,

Michael