View Full Version : Switch question
onesat
12-05-2011, 07:52 PM
Hi everybody! Need advice regarding using switches. I get 18 db Q at the dish (97W and 101W) which is great. The problem is that the multiswitchEMP used is far away from the dish ( 20m or so) and because of that I drop signal Q to aroung 16.4 db. This is huge drop in Quality. Tried different top quality cables, including the rg11 copper only and no difference. What are my options? Would be a switch close to the dish indicated, but this will not interfere with the EMPmultiswitch? Any ideas? Thank you.
folcan99
12-05-2011, 07:59 PM
Hi everybody! Need advice regarding using switches. I get 18 db Q at the dish (97W and 101W) which is great. The problem is that the multiswitchEMP used is far away from the dish ( 20m or so) and because of that I drop signal Q to aroung 16.4 db. This is huge drop in Quality. Tried different top quality cables, including the rg11 copper only and no difference. What are my options? Would be a switch close to the dish indicated, but this will not interfere with the EMPmultiswitch? Any ideas? Thank you.
There was this one device that you would plug from the Receiver out wire from the dish to the receiver if your cable is more then 100 feet, it would boost the signal. Just cant remember the name of it lol. Got it SATELLITE AMPLIFIER SIGNAL BOOSTER FTA
onesat
12-05-2011, 08:15 PM
Well the EMPmultiswitch has an amplifier built inside. Amplifiers do nothing unless you got 150m plus cable. I would stay away from them since it amplifies the noise also. I talk about Quality to preserve, not Signal strength, which is over 21 db in my case. So the question is how can I preserve the Q of the signal from the linear LNB until I to reach the EMPmultiswitch located at about 20m away.
folcan99
12-05-2011, 08:35 PM
Well the EMPmultiswitch has an amplifier built inside. Amplifiers do nothing unless you got 150m plus cable. I would stay away from them since it amplifies the noise also. I talk about Quality to preserve, not Signal strength, which is over 21 db in my case. So the question is how can I preserve the Q of the signal from the linear LNB until I to reach the EMPmultiswitch located at about 20m away.
Maybe better Wiring?
onesat
12-05-2011, 09:32 PM
Nope. Commscope, Belden, RG6 and RG11 all made in USA, full copper. Changed connectors, PPC ws and Digicon. All expensive stuff. The funny part is that a piece of Dreamwire cable, cheap to say at least, was dropping a lot of signal Strenght but Quality was much better. Go figure. Any ideas?
onesat
12-05-2011, 09:40 PM
Is it possible to put a switch close to the lnb, before the EMPmultiswitch? Thanks.
WillDekkard
12-06-2011, 05:58 AM
Hi everybody! Need advice regarding using switches. I get 18 db Q at the dish (97W and 101W) which is great. The problem is that the multiswitchEMP used is far away from the dish ( 20m or so) and because of that I drop signal Q to aroung 16.4 db. This is huge drop in Quality. Tried different top quality cables, including the rg11 copper only and no difference. What are my options? Would be a switch close to the dish indicated, but this will not interfere with the EMPmultiswitch? Any ideas? Thank you.
multiswitchEMP ? What switch do you have, 4x4, 5x4 ? . . . ? What type of LNBs do you have ? How many receivers in the setup and are 97 & 101 LNBs the only sats in the mix? Need more info to make a proper recommendation.
Terryl
12-06-2011, 06:30 AM
Hi everybody! Need advice regarding using switches. I get 18 db Q at the dish (97W and 101W) which is great. The problem is that the multiswitchEMP used is far away from the dish ( 20m or so) and because of that I drop signal Q to aroung 16.4 db. This is huge drop in Quality. Tried different top quality cables, including the rg11 copper only and no difference. What are my options? Would be a switch close to the dish indicated, but this will not interfere with the EMPmultiswitch? Any ideas? Thank you.
1.6 dB of signal drop after putting in a switch is not that bad, some of the cheaper switches will give you a 3 to 4 dB of insertion loss.
Does your picture suffer with a 1.6 dB loss in "Q" it shouldn't, maybe a 6 dB but 1.6?
Remeber this is a digital signal, it's not like the old analog days where you had to get every micro volt of signal you could, on one linear bird I have a "Q" down around 20% but the picture is great.
Those cheap $20 in-line satellite RF amps, a big waste of money, that is unless you have spent $400 to $600 on one that will do a good job with out boosting the noise floor.
The coax you have tried, what was the frequency range? was it good to 3 GHz or at best 2.5 GHz?
They do have RG-11 that is meant for CATV only, that stuff drops like a rock after 1.5 GHz, that cheap coax may of had a higher frequency response the the other stuff.
And in my opinion a switch can be located anywhere in the first one third (from the dish) of the cable run, and be sure to ground it.
onesat
12-06-2011, 06:58 PM
Switch is EMP13X6 and is powered ( important for quality). Use a firststrike meter. Cable is rated at 3ghzcommscope, beldenrg11 is not rated but tested is as good as the one rated for 3 ghz. Both full copper, double shield. Tried also commscopecopper clad used in sat installs and is ok also, but not better than the full copper, it drops the signal strenght a little bit more, but not too much.In testing if I could preserve the signal quality not strength before enters the switch would be great. Dishis grounded, switch grounded also. How do I achieve that is the question. And yes it is for linear standard dual LNBs. Thanks.
onesat
12-06-2011, 07:07 PM
The SignalQuality drops 1.6 db before the switch that is the problem. The cable from the dish to the switch is too long and I do not know what to do to reduce that drop in quality. After the switch the drop is insignificant. Signal strength is excellent but irrelevant ( over 21db). Thanks.
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