> I have a 2000' broadcast tower with a platform at 1300' and another > at 1000'. There is a DB 224 mounted under the 1300' and one under > the 1000' platform with a section of 7/8 feed line running from the > top platform and the bottom platform. > What I would like to do, is mount the radio in the enclosure at the > top platform. Use the top DB 224 for the Receive antenna, and the > 1000' DB 224 for the Transmit antenna. What are the problems that I > will run into with this situation, and should I look for some type > of filter for the receiver.
Stray RF will be everywhere and there will probably be a relatively high noise floor at the site. The receivers will tend to block or hose up (not work well) from all the shear amount of RF. For a great system, you will need a decent amount of both the proper type of receiver and transmitter filtering Performance will at first start up probably be less than you might expect or desire... but over time you'll learn how to deal with all the nearby RF. Poorly contained and controlled GasFet Pre-amplifiers will become really good mixers and grunge generators. The hopefully free lunch will probably cost you more than the advertised price. cheers, s.
