[ljkdhall]

Beautiful Iowa afternoon! Good chance to crawl around on roof (and basement)
What I've done:
1. Found the HDHomerun signal strength utility (pretty detailed and useful), ran it with current setup. Problem channel 5: Signal strength 100%, Signal quality 52%, Symbol quality (whatever that is)...jumps between 0 and 45%.

2. disconnected amplifier from pole and took out power injector in basement. (So now a straight cable run from antenna to HDHomerun) Results on problem channel 5 virtually identical on all counts to results with Winegard amp. This is disappointing, I was hoping for something to be different at least, but didn't really see anything. All readings within 1% of first set.

3. I had picked up the RCA amp recommended..Hooked that up in place of Winegard Amp, with FM trap ON. Interestingly, channel 19 (another problem channel, but not one I care about as much) improved dramatically, to 100% on all 3 measurements. However, channel 5 is still no joy. Signal Strength 100%, Signal Quality 52-54%, Symbol quality 0-60% (jumps around constantly). On actual TV viewing, channel 5 is still marginal at best, lots of breakup/pixelation.

Since the signal strength is 100% but the Signal Quality is only around 52%...does this indicate that strong FM interference is causing the problem??

I have not picked up a separate FM trap yet (couldn't find one locally), but that's my next step, unless my results give you guys any other ideas of what I might try.

Thanks in advance for all your help!
Larry