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Ian Jackson[_2_] · July 20th 09, 09:45 PM posted to rec.radio.amateur.antenna

In message , AE5NE
writes
On Sun, 19 Jul 2009 07:31:01 -0700, Jitt wrote:

In article 753fee20-bfec-4b9a-81b2-
, says...
Hi to all,

Hope that my question has some sense...: If we double the power
radiated by an antenna (+3 dB), how does it translate on the S-meter at
a receiver 'far' away.. i.e. is the difference in dB on that meter has
some mathematical relation to the 3 dB change at the transmitter?

73 de Pierre

Only in theory. It is possible to write an expression
which relates an increase in Tx power to Rx antenna power at the remote
site, but I doubt if it would agree with observed values in the field.

If they did not - any linear mode such as SSB would have a pretty hard
time working!

Aye, Captain. Ye canna change the laws of physics.
--
Ian