[BC] DA proof for FM

[Dana Puopolo]

If you have access to a large field with low known RF levels, have the ability
to mount a bay with tower, etc. on a turntable in the above mentioned large
field, (or a scale model at a scaled frequency), have a calibrated signal
generator and receiver and have a directional calibrated gain antenna that can
be mounted at least 1/4 mile away in said field, line of sight to the bay on
the turntable, then you might be able to do this.
I guess I'm trying to show you that the $10 k is actually for doing
something.

As an alternative, you might try using an antenna whose pattern is already on
file with the Commission, such as this one:

http://www.kathrein-scala.com/catalog/CA5-FM-CP-RM.pdf

-D

From: Fred Morton <radioguy at airmail.net>

To the Group:

    I'm working on a small class A in Colorado. 89.5, 100 watts ERP, 
wedged in pretty tight due to 1st adjacent issues. After getting some 
antenna quotes, I'm finding that the antenna itself isn't so bad, but to 
get an "FCC proof" is adding around 10k to the cost of the actual antenna.

    So, here's my question-has anyone on this list ever done their own 
antenna measurements on an FM DA, submitted them to the Commission and 
received the FCC's blessing?

    I'd like to do it and save 10 grand, but if there's no way around it....

Thanks

Fred Morton
Houston
-- 
Fred R. Morton, CSRE