Originally Posted by kjgarrison
I do run an old SD TiVo box off my SWM, so I was thinking I would use two of the four coax runs from the barn. Is there an amp that will do that (assuming I need a twofer.)
Your comment about "if" my problem is cable losses are very much on my mind. I ran the tests of signal strengths for the various sats and from a post of yours I believe, VOS, 99c and 103c are the key HD satellites. For 99c the range was 76 to 91 with an average of just a little below 84. For 103c the range was 82 to 91 with an average of 87.5.
The 99s was low and 103s even lower with a lot of zeros and some twenties. High of 61.
I don't know if my dish is misaligned, if my long cable run is a problem, or if the some of the cables were compromised by the kid that ran over them with a tractor awhile back. Or could be a splitter issue.
So I ordered one of the new DirecTV approved ones that works from 2-2150 and works with my SWM8 (oh, and a new HR24, woot! Maybe THAT will help.)
I need to pay more attention to what channels the pixelation happens on to see if that would be a specific satellite (thinking that might imply an alignment issue.)
Or maybe I should just get a service call. I'm just nervous that they would show up and look at my SWM8 and say WHAT IS THIS??? They were here a year or two ago and had never heard of the SWM. (Not to mention the HR24 in a few days... heh.)
Your levels/numbers don't look that bad. Tweaking the dish might get you "some more", but this might only be 5 points or so.
The dish to SWM length "they want" to be around 45', but many have used them up to 100'. You're pushing it even farther "but" the SWM's output is controlled to -30 dBm. What this means to you is... if the dish outputs -15 dBm [and short cables] the SWM attenuates this to -30 dBm. As the signals drop below -30 dBm input, the SWM adds gain to keep the output at -30 dBm. This keeps happening until the input drops below -45 dBm, at which point the SWM has reached max gain and any further drop of the input causes a drop in output.
So what does this mean to you?
Your long cables have about -14 dB of loss [-15 dBm from the dish - 14 dB = SWM input @ -30 dBm] and the SWM is barely adding any gain yet [if any].
Clouds/light rain will drop your dish levels and the gain will overcome about half of what it would do if you had short cables, but is this what your problem is? You're getting rainfade with the slightest rain?
If you move the SWM to the barn, then the SWM output of -30 dBm, then drops though the cables to about -45 dBm before the losses of the splitter and house cabling. The receivers want a level of -54 dBm, which doesn't leave much between the splitter input to them.
Before you start spending your cash, look hard at what the problem is first.
Move the SWM8 to the barn, would require amps for both the SWM & maybe the legacy ports too [this last I'm not yet sure].
So you might be spending $100-200 on amps, but maybe they won't cure what you have working now.
Maybe PM me with "ALL" your cabling lengths, splitters, etc. and I can make some "general calculations" of your signal levels.