I'll chime in. I would definitely mount the 2nd ant low enough below the 450 ft one to provide enough vertical separation to run without the duplexers. That way you always have the option. 60 plus feet on vhf. Somebody can run you the numbers if you provide station specs.
It's a trade off. DB Loss of the stand alone ant receive path vs rx loss of a duplex antenna through the duplexer path. Not to mention the cost of the 2nd feedline and ant. I have a system on the air using the top ant for RX, works well. Don -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of wb0goa Sent: Thursday, January 28, 2010 1:50 PM To: [email protected] Subject: [Repeater-Builder] Duplexer vs Split Level Antennas Have chance to install a DB 224 at 450' and another one anywhere below it. Using LDF6 on both runs. RF solid state 110 watts out. Wanting to know the pros or cons of running both antenna close together for more height with duplexer or spacing antennas for isolation without duplexer? ------------------------------------ Yahoo! Groups Links
