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Discussion in 'DIRECTV - SWMLine Discussion (private)' started by Coffey77, Apr 15, 2008.
MCR - ES-104D - Power Pass (One) - 5-3000MHz - PASS
GE 4-way power pass all 5-2300MHZ- PASS
In my current setup:
Eagle Aspen 4way SPP #P-2150-4AP-GX works
Eagle Aspen diplexer #d2200 works
Terk diplexer BDS P1
Perfect Vision 2way SPP #DV23-222 works (note had one out of 3 fail)
Sorry gents, I am away, but I'm using a Radio Shack and I think the specs are 40 - 2150 MHz, a 4-way. I will relook at it Thursday evening and report it. I have it after the PI, with the 4th connection uncapped (not terminated). No issues!
I may be wrong but I got the idea of the power pass is for putting a splitter on before the P.I. Let's say you have a run from the dish, then you split it to two rooms. One room has your Receiver while the other room, you plug in the P.I. because you don't have access to plug in the PI anywhere before the splitter.
Check and see if the link is the one you have if you get a chance.
Here is one for the fail category...although it is obvious from the 1000Mhz top end. This was hidden in the ceiling of my new RV and wreaked havoc on my signal strength until I found and removed it. I actually had 3 of 4 tuners that went through it working....not well but working. The fourth tuner got nothing on 103c and significantly reduced signal on all other sats.
Dynaflex - S-14 - 5-1000MHz - FAIL
I replaced my current 4-way splitter (Phillips, I think) with a Holland STS-4 and things are working better. The H20-600 still gets 771s but for for only a fraction of a second. The Holland splitters are "equivalent" to the NAS SWS splitters. NAS is the company that makes the SWM-8.
So far so good.
Yes - if you need to split before the PI, then the Power Passing Leg becomes important. That leg must be the leg going to the PI's input.
If you have a splitter after the PI, it doesn't matter what your splitter is doing - passing on one leg, passing on all legs, passing on all legs but diode steered - whatever.
That's a case where I wouldn't want the splitter to pass power on ANY leg. Remember that receivers send out 13 or 18 volts to signal the dish. That voltage will get passed along for no good reason.
Maybe SWM compatible receivers don't do this. I don't really know. I figure that if a voltage might be sent out, I'd rather squash it.
I'm using a power passing splitter before the PI. Any voltage the receiver sends [and it does still send voltage] is well below the PI voltage [29 volts] so there is no issue.
No its not that one. It is this one though
Anyway the one you list looks similar, just gold.
The SWM receivers still pass power. When disecting my original PI problems, I had it disconnected completely and measured power on the output to the LNB. In my case what I thought was a one leg passing splitter was actually a 4 leg passing splitter and each leg was trying to supply power. Guess what, everything still worked without the PI, including multiple channel changes.
Don't mind me. I'm a purist sometimes.
GE - 22694 - Power Pass (All) - 5-2300Mhz - PASS
It's just a little surprising that they don't all need to be P.P. lines because of the receiver voltage.
IIRC, and I might not, the PI provides power to the SWM and the receivers do not.
The SWM provides the power for the LNB and the receivers passively receive the full spread of TV channels within one(2 for dvr) of the 8 channels. I remember a post that listed the 8 channels. I try to find it.
It seems that my HR21 is now acting like a cable STB because the SWM/LNB at the dish takes the current satellite signals and turns into something akin to a cable kind of scheme.
Receivers connected to non-powerpass legs can't send power to the SWM/LNB.
It would seem possible to have the output(non-power side) of the PI terminated and the receivers connect via non-powerpass legs of the splitters and it should still work.
Do I have any of this right? :scratchin
I think you've got it. I added my thoughts below.
[first cup of coffee in hand] Sounds like it.
The PI supplies 29 volts to the SWM.
Each receiver sends [communicates with] the SWM over the 2.3 MHz signal.
"channels" come over the eight SWM channels and there is a ninth SWM channel for guide data [I'm told].
Yes, I meant the PI.
By "akin to" I meant something closer to how a cable STB works vs a satellite receiver but I realize it's not quite the same...as you correctly pointed out.