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Where do I find that for other channels?
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It's a little involved. I'll take you through it for WOWK step-by-step:
http://www.rabbitears.info/
First Section, Web Listings
Type wowk in Find: Call Sign box and click Search which will take you here:
http://www.rabbitears.info/market.ph...&callsign=wowk
Digital TV Market Listing for WOWK
scroll down to WOWK
click on Technical Data and Screencaps in yellow band which will expand the yellow band
click on RabbitEars TV Query which will take you here:
http://www.rabbitears.info/tvq.php?r...ms&facid=23342
RabbitEars TV Query for WOWK
WOWK-TV - HUNTINGTON, WV, US - Main Listing
scroll down to Area: and click on Longley-Rice Coverage Map which will take you here:
http://www.rabbitears.info/contour.p...=2001528&map=Y
Coverage Maps
WOWK-TV (13-1) BLANK-0000003187
Look for Ashland; it is half way out from the center of the circle toward 9 o'clock
zoom in on Ashland
Ironton is NNW of Ashland
Your location is just SW of where 141 meets 52
You will see more signal color in your area because WOWK is stronger than WCHS but there is a dead zone around S 10th and Adams St near the Holiday Inn
Keep in mind that field measurements are made for the contour circles, but the color patches are the result off the Longley-Rice computer simulation which gives an impression of greater accuracy than what actually exists. Your tuner will tell you the truth, especially with 2Edge signals.
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Would it be OK to ground the HLSJ and omit the grounding block to avoid another connection?
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It would work, but it doesn't meet NEC requirements, if you care about that.
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It seems to have more gain on higher VHF channels so that's good.
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Yes, the pattern shows more gain on VHF-High than on VHF-Low, which agrees with the specs.