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Old 11-Nov-2014, 1:14 AM   #61
rabbit73
Retired A/V Tech
 
Join Date: Aug 2012
Location: S.E. VA
Posts: 2,753
Quote:
10.1 continues to get sporadic RS Uncorrected Errors as well as 33-1 and 49-1. Nothing else seems to do that.

Oddly enough even with the attenuator, 33-1, 33-2, and 33-3 continue to be around 67% signal strength (which is what they are at after inserting the LNA 100 and before putting the 3 dB attenuator in the mix).

I don't mind losing the KRFT channels as there is nothing on there I watch anyway.

Do you have any other ideas I should try?
Thanks for the report.

While the fix helped for a while, it looks like it was not permanent. Since the errors increased when the signals were stronger, this suggests to me that you should try increasing the attenuation between the C2V and the input of the AC7.

I think you said that you had 3 of the 3 dB attenuators. So, try 6 dB (they stack in series don't they?) for a few days, and then increase it to 9 dB before giving up on this idea. This should not affect the reception with the 91XG.

Code:
    91XG > LNA 100 > 
                    \
                     AC7 > Roamio > Basement TV
                    /
  C2V > attenuator >
If you add the whole stack of attenuators to the input jack of the AC7 it might put too much strain on it. You can insert them in the middle of the coax with a short jumper coax and an F81.

Have you tried tilting the 91XG up a little to see if it improves the reception of Fox?

I'll stick around with you until I run out of longshot ideas to try, or until you give up and settle for what you have now.

Are the coax lines from the antennas grounded with grounding blocks that are connected to your electrical system ground? I'm thinking about interference with this question. It's also a good idea for electrical safety.

Do all your pieces of AC operated equipment have 2-wire power cords, or do some have 3-wire cords?

Are you using power strips that have provision for coax grounding? If so, are you using that feature? It's not always a good idea to do that.

The power strip will ground the coax shield if it is connected to a properly wired 3-wire outlet. But, the coax center conductor might pickup electrical interference from the other devices plugged into the strip, and the TV signal might be degraded if there is a surge protector connected between the center conductor of the coax and the shield.

What make and model TV is directly connected to the Roamio output? Does it have a signal strength indicator or a Diagnostics Screen? Are you using an HDMI cable, or what between them?



Virtual 33.1 KSPR-DT, real channel 19, is your strongest station, but its virtual number is not shown on your tvfool report:
http://www.tvfool.com/?option=com_wr...d24362e8886d03
Attached Images
File Type: png mulliganman's antenna setup 2 (2).png (116.7 KB, 5079 views)

Last edited by rabbit73; 11-Nov-2014 at 8:48 AM. Reason: Had the LNA100 in the wrong coax
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