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Newbie polarity problemThis section is for discussion on domestic multi-receiver systems for distribution of both terrestrial and satellite signals. Multiswitch, diplexer, triplexer, earct bonding, smart Priority switch, signal splitter, SCART doubler, video sender, remote extender, etc. | |
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10-01-2009
| #1 | ||
| Member Join Date: 10-01-2009 Location: Ireland
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My System: Lidl |
Hello, I have a single LNB, split in 2 with a splitter, 1 feed going to my living room to the kitchen/dining. My wife is German, so we use the Lidl decoders to get fee german digital channels (RTL etc from Astra 19 East). I set up the split before Christmas. The cable going to the the living room is also running through a diplexer. Took me a while to figure things out, but I can use the two decoders together, but only see Horz channels on one decoder and vertical on the other. Is there a way around this. Thanks guys Martin | ||
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10-01-2009
| #2 | |||
| Guest
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Bin the splitter and fit a twin (or more) output LNB. | |||
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10-01-2009
| #3 | |||
| Member Join Date: 10-01-2009 Location: Ireland
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My System: Lidl |
Thanks again Martin | |||
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10-01-2009
| #4 | ||
| Site administrator  Join Date: 26-07-2003 Location: Scottish Borders
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Blog Entries: 1 My System: Sky UK. FTA analogue & digital satellite from 6 fixed dishes (5E/7E/9E/10E/13E/16E/ 19E/23E/28E) Pace MSS100, Echostar IP3000VA, Technomate TM-1000D, Dreambox 7020S  The last noble sat warrior to fly the olden flag of Analogue | Yup Rai is correct - an lnb cable with a splitter in it will never work properly. Fit a new twin or quad output lnb and run an independant cable to the second receiver. | ||
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10-01-2009
| #5 | ||
| Site administrator Join Date: 26-07-2003 Location: Scottish Borders
Posts: 19791
Thanks: 17
Thanked 1165 Times in 959 Posts
Blog Entries: 1 My System: Sky UK. FTA analogue & digital satellite from 6 fixed dishes (5E/7E/9E/10E/13E/16E/ 19E/23E/28E) Pace MSS100, Echostar IP3000VA, Technomate TM-1000D, Dreambox 7020S The last noble sat warrior to fly the olden flag of Analogue | Satellite transmissions use one of 4 bands horizontal low band vertical low band horizontal high band vertical high band the H/V switching is done with a 13/18V voltage change, and the hi/lo band switching is done with a 22khz tone which is on/off. Therefore if one of the receivers switches to a channel which has the band where the 18V is on, and the tone is on, then whatever the other receiver does, it cant switch to any channel on any band apart from the same as the first receiver. It all get VERY complicated VERY quickly. With the quad lnb, the boxes have completely independent inputs. | ||
| Last edited by Analoguesat; 10-01-2009 at 07:04 PM. Reason: typo | |||
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| The Following User Says Thank You to Analoguesat For This Useful Post: | martyjquinn (10-01-2009) |
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10-01-2009
| #6 | |||
| Guest
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If two active receivers are connected to the same feed, then conflict occurs as only one Receiver can seize control. Polarity is switched by altering the LNB voltage from 13 to 18Volts and Band switching is 22KHz tone driven. So, if one Box is trying to see Verticals and the other Horizontals, which Box wins? | |||
| Last edited by guest; 10-01-2009 at 05:34 PM. Reason: Analoguesat wins!! | ||||
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10-01-2009
| #7 | ||
| Guest
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| Anyway, as you already have a Twin Output LNB, where did the perceived need for a Splitter come from? At the end of the day, if you require unhindered simultaneous operation of xy Boxes, you need xy independent feeds. | ||
| Last edited by guest; 10-01-2009 at 05:44 PM. Reason: Distracted by SWMBO | |||
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| The Following User Says Thank You to For This Useful Post: | martyjquinn (10-01-2009) |
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10-01-2009
| #8 | |||
| Member Join Date: 10-01-2009 Location: Ireland
Posts: 3
Thanks: 2
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My System: Lidl |
Thanks again rai. The twin Lnb was being kept as a spare and I had a splitter. many thanks, I've learned a lot in the last few minutes. Regards Martin | |||
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