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placement of sonora amp and polarity locker?
Posted 19 November 2012 - 12:16 AM
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Posted 19 November 2012 - 01:30 AM
If you are using a SWM16, or are running through some all-power-passing splitters to use two SWM16s, you basically already have a polarity locker right there. Just make sure you are using solid copper core coax to avoid the excessive DC losses that you get with copper-coated steel. (RG11 solid copper would be the best but it can be hard to find.)
As far as signal level, 70ft is not all that long of a run, people have gone much further without an amp. The AGC of the SWM-16 is a big help.
Now, if you are multi-way splitting into a whole bunch of SWM16s, for an MDU or something, that might be a different story since the splitter losses come into play. So in that case you might need an amp.
Posted 19 November 2012 - 10:48 AM
Posted 19 November 2012 - 10:52 AM
At the input of the splitters. [I too question the use/need for them]
Understood. but if i do get the amp and polarity locker.....where would it go in my scenario?
Posted 19 November 2012 - 10:55 AM
Posted 19 November 2012 - 11:08 AM
You're trying to band-aid another problem.
I agree also....but as you can see from my other thread regarding losing transponders randomly with SWM16 and I have replaced EVERYTHING repeatedly..... I am out of options. I have gone through 5 swm15s already.
"If" using a locker and an amp does do any good, it would simply be masking the real problem, which should be addressed instead.
70' of good coax isn't a problem that either of these would be needed for.
The combined loss of 70' & 2-way splitters, should be ≈ 10 dB, which [again] is well withing the input range of the SWiMs. "The worst" this might cause is rainfade starting a bit sooner than with less loss.
As to losing transponders, can you be more specific?
Which ones, which SATs, and does if happen on all receivers?
Posted 19 November 2012 - 11:18 AM
the locker would only boost the voltage by 1-2 volts, which "might be" enough, but it's better to address the use of the wrong coax instead.
Posted 19 November 2012 - 11:21 AM
Posted 19 November 2012 - 11:26 AM
70' of CCS RG6 is borderline, so it shouldn't be a surprise.
thats the only thing i havent done. I was going to do RG11 but can't find any Solid copper through my distributors... I will do RG6 SC. Still doesnt make sense though that it works fine for a while then acts up. If it was a cable issue it should be a problem all the time.
You're dealing with a voltage drop because of the resistance.
Posted 19 November 2012 - 11:27 AM
Posted 19 November 2012 - 11:48 AM
Posted 19 November 2012 - 11:52 AM
Unless you have a transmitter in your backyard, [again] QS is more overkill.
going to pick the rg6 up at my distributor today. Think i should do quad shield? thats what i got now. Just pain terminating.
Posted 19 November 2012 - 12:15 PM
Posted 19 November 2012 - 04:39 PM
I know I've gone a couple hundred feet through copper clad center RG-6 with no voltage problem. Not that I'm recommending it. And with an SLM LNB, you actually have half the effective center conductor resistance because two coaxes in parallel are carrying 18 volts.