[BC] Class A stations "burning" power
DHultsman5@aol.com
DHultsman5
Fri Jun 30 18:39:30 CDT 2006
In a message dated 6/30/2006 11:02:59 AM Central Standard Time,
dpuopolo at usa.net writes:
I'm sure Dave will correct me if I'm wrong.
Then, allow both of these stations to claim "50" for legacy reasons,
regardless of what power they actually run.
I guess what my meeger statement was.......50 kW. On FM on 88 mHz. @ 1000
feet is essentially the same at 107.9 @ 1000 feet.
To really make the AM band EQUAL, you have to compensate for the antenna
efficiency and the local ground conductivity.
Ie . KOA on 850 kHz.the antenna and ground conductivity are different than
a 50 kW on 850 in Birmingham AL... Basically the Denver station will have
better coverage at 50 miles with 38 kW. ND inout than a theoretical 50 kW. ND
in Birmingham with a full 50 kW input since our condictivity is about 5-7
m/mhos and I assume the antennas are not as efficient at KOA.
I guess the other way would be to determine an effecitve field at one mile
for all 50 kW. and adjust the inoput power accordingly.
Other comments??????
Dave
More information about the Broadcast
mailing list