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On Apr 6, 2:27 pm, "Ralph Mowery" wrote:
"Ed Nielsen" wrote in message . .. Hex-crimp fittings have 6 points where the connector is pinched into the cable creating small impedance mismatches. Impedance mismatch creates reflection. If the reflection(s) is(are) severe enough, whatever is at that(those) frequency (frequencies) may not work. Plus, their return loss is a fair amount lower than that of compression connectors (~18dB as compared to 30dB). I've replaced hex-crimp fittings on DirecTV systems because of hex-crimp fittings which were causing some channels to not work. Funny how it works where a bad connector will blank out just a couple of cable chanels. First time this hapened to me about 20 years ago the cable guy came out and said it was a bad connection. Almost laughed at him,but he replaced the connector at the outside of the house and it cleared right up. Very good info. The interesting thing is since my original post I went and bought a 500 ft roll of Carol Brand RG-6 QS from Home Depot, and made some cables with the crimp-on connectors I already had. When I swapped these new RG-6 QS cables with ones I made a while back with regular RG-6 with the same crimp-on connectors, I got surprisingly horrible results. A couple of analog channels don't come in at all (ch 28 and 56), where they used to come in with a fairly good picture. Yet other channels on lower frequencies, such as VHF appear to be the same. I inspected the connectors and they appear to be OK, but I am guessing there must be an issue with these connectors and the RG-6 QS, where it's causing the issues that were described above with loss. Is this possible?? It seems to be affecting various UHF channels (ch. 28, 56, 62). Thank you very much for the help. -- Chris |
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