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Old 8-May-2016, 2:06 AM   #43
rabbit73
Retired A/V Tech
 
Join Date: Aug 2012
Location: S.E. VA
Posts: 2,753
Quote:
You mentioned the 91XG. Would a 4 or 8 bay bowtie work also?
Probably, but WCHS is weak
Quote:
If I need a preamp for UHF but not VHF, where is the best place to join them or should I amplify both?
You can't amplify UHF for WCHS yet until you attenuate 26, because it will overload the preamp.
http://www.tvfool.com/?option=com_wr...f1f05778a90214
Quote:
I don't think the NF-471 is needed on UHF and could hurt CH 23.
It probably would hurt 23. That was ONLY for a test to see if WCHS was possible if you made 26 weaker before spending a lot more money on a Tin Lee custom bandstop filter to make ONLY 26 weaker.
Quote:
When I was looking around, I came across this In-line amplifier. Could this be used as a preamp if the antenna is much better than what I have?
That amp is not for you. You would need the Pico Macom PS10 Power Inserter/Power Supply, a DC block to keep the antenna from shorting the DC coming out of the input, and it would be overloaded by 26 with a signal power of -27.5 dBm even before adding antenna gain.
-27.5 dBm = 21.5 dBmV

Max input of the Tru-Spec LA-10 10 dB Coaxial IN-Line Amplifier = 14 dBmV

http://www.atvresearch.com/specinfo/la-10.pdf
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Last edited by rabbit73; 8-May-2016 at 11:32 AM.
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