I currently have an HDB8X antenna at 15 feet up and no rotor, and it’s barely cutting it for me.
I’m looking into taking this down, in favor of a pair of 91XG’s stacked. I’m currently using a CM-7777 preamp, with no splitters.
I have noise margins that range from -10, to -15 for the signals that I want the most.
So with this in mind, I have a few questions:
A) I’ve read a few different places about the spacing, for identical stacked antennas. 3 feet, or 25 inches. What is the ideal spacing?
B) What are my chances of getting the signals with the lowest noise margins? I’ve done my research about needing a NM above 0 to get a channel, or above 5 for a solid picture in all conditions.
C) What do I expect to see in gain from both of them vs one? I’ve heard that you add 3 dB, to what you’d get with a single XG91. Is this correct?
The current antenna gets 2(25), 6 (34), 8(8), and 19(27) solid 24/7. 4(51), 11(48), 16(38), 22(42), and 53(43) depend on the conditions.
The stations I really hope to get are 4 (51), 11 (48), 22(42) and 53 (43). Getting 16 (38) and RF 19 (WEMW – repeater out of Greensburg ) would be nice, but don’t expect it. 8 is the only VHF I care about, but I figure with a NM of +23, and 25 miles away, that getting it shouldn’t be a problem.
Any help and information would be very appreciated!!
TV Fool report:
http://www.tvfool.com/?option=com_wr...b97db7431787c0
(Ignore WPXI RF21, transmitter was never built)