On 10/12/11 5:42 PM, Dan Mills wrote:
On Thu, 2011-10-13 at 02:11 +0200, Magnus Danielson wrote:
I have wondered if not amateurs could set up small frequency broadcasts
of their own. Say a 10 W transmitter or something.
It's called a beacon and at least the UK license does allow them (25W
maximum) and there are a great many out there (mostly used for
propagation studies and the like).
Transmitter frequency stability will vary all over the shop, from non
ovenised microprocessor grade quartz, all the way up to GPS/Rb
disciplined Wenzel sprinter OCXO.
Yes.. according a friend of mine, the primary activity in the Los
Angeles area on the 23 cm band (1300 MHz) is trying to figure out what
frequency the various beacons are at, right now, because, in general,
neither they, nor the oscillators for the folks trying to listen to
them, are all that stable. (which is odd, because these same guys all
have Rb oscillators, ovenized widgets, GPSDOs, etc. )
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