View Single Post
Old 7-Nov-2014, 3:43 AM   #55
mulliganman
Senior Member
 
Join Date: Jul 2012
Posts: 147
Quote:
Originally Posted by rabbit73 View Post
The signal might be too "hot" for the Roamio tuner. A simple test would be to insert a 2-way splitter between the C2V and the input of the AC7, which would attenuate the signals 3.5 dB; two splitters in series or a 4-way splitter would attenuate the signals 7 dB.

If you want some actual fixed attenuators:
http://www.mjsales.net/itemsearch.asp?FamilyID=221

They also have power passing attenuators, but you don't need that kind now.
When you mentioned attenuators, I realized I had 3 of these lying around: http://www.3starinc.com/fam-3_db_in_...uator_pad.html

So, I went up and connected one to the C2V antenna and then connected that attenuator into the all channel input of the AC7 combiner. I then rescanned for channels on the Roamio. Some 8 dash channels I was getting dropped off (they may have been analog stations i am not sure). I then proceeded to go into the DVR Diagnostic menu of the Roamio and checked all channels I was receiving. First off, 33-1 changed from about 80 on the RS Uncorrected amount to 0. Another interesting change is that 49-1 and 49-2 shot up to 67% signal strength (up from 62%) and the SNR went up to 27 dB on those channels. All other channels reported before remained at the constant on both signal strength and SNR from what i reported in post 21. Channel 10-1 also had 0 for RS Uncorrected but it was that way earlier this evening before adding in the attenuator.

What do you guys think about that? Why the jump on 49-1 and 49-2? The jumps wouldn't have anything to do with losing the 8 dash channels would it?

I am going to check again tomorrow evening when i am home from work and see what the levels are reporting then.

Last edited by mulliganman; 7-Nov-2014 at 3:45 AM. Reason: added information
mulliganman is offline   Reply With Quote