Quote:
Originally Posted by old_tv_nut
My first guess is you would get better results with UHF and dedicated UHF antennas for transmitting and receiving, but I suppose you have some VHF only receivers. In that case, I would expect the upper VHF channels to work better. Are you seeing differences due to channel number? Have you tried adjusting the length of the dipoles?
There have been discussions here on what kind of antenna to use to transmit - give it a search.
Combiner manual says 17 dB insertion loss, so you need a 17 dB amplifier following it to get back to the modulator output level. It also needs to be able to handle the desired signal level without crossmodulation, so you need a 20 dB gain distribution amp designed for the high signal level input; a 20 dB antenna distribution preamp may have problems.
Manual:
https://cdn-docs.av-iq.com/other/PC1601_Datasheet.pdf |
I found a boost from a leaf antenna that I'm not using. From the combiner, I output to this boost, then this boost goes into the splitter. The antenna that's attached to this splitter works better now. However, I get these ghost bars going from left to right. If it only happens on the wireless sets, that would be okay, but now all the tvs with the direct connection are getting this left to right scrolling bars too.
But I went back to my original set-up without the boost, and I started modulating to some UHF channels, and the wireless reception did work better for some of these UHF channels. But still, not the same quality as direct connect. BTW, when I'm doing these testings, the antenna and the wireless sets are in the same room, maybe just a foot away, and I still can't achieve a clear picture like I would with a direct connect.