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The offering from Screwfix says “Labgear 19132R/S [17W35]” on the bag.
I’ll try and get the pictures that failed to upload just to a suitable size for this site…
Here we go: in is male on this splitter, out both female.
I’m sure the one you got is correct, but that’s not what they are selling now:
https://www.screwfix.com/p/labgear-19132r-s-2-way-metal-t-splitter/44534
Update:
The £1.77 splitter has the correct gender to fit properly.
The signal strength on the Humax is down about 4 points on the stuff which was 80-81 before (the main 6 mux). Com7/8 have fallen over the cliff, so to speak.
The oddest thing about the “correct” gender splitter is that the label is virtually identical to the one from Screwfix, give or take the frequency range, and “CE”.
Compare attached with the face view above.
[attachment=66238,992]
Yes I have a couple of those metal bodied splitters which seem way more solid than the plastic bodied versions.
I dont think im using them for the tv at the moment but Its interesting that we are employing these splitters for a loop through issue that Humax should have sorted with the build.
They do lower the signal strength and they are not ideal in any line feed. I solely use the Humax tuner at the moment and hope that when I get my new hd telly the Humax on standby will feed the signal through…I havent checked lately but it probably doesnt
Minstrel SE – 8 hours ago »
Yes I have a couple of those metal bodied splitters which seem way more solid than the plastic bodied versions.
I dont think im using them for the tv at the moment but Its interesting that we are employing these splitters for a loop through issue that Humax should have sorted with the build.
They do lower the signal strength and they are not ideal in any line feed. I solely use the Humax tuner at the moment and hope that when I get my new hd telly the Humax on standby will feed the signal through…I havent checked lately but it probably doesnt
Read the expert on all things aerials, spliiters and amplifiers.
Johnh510 – 22 hours ago »
Update:
The £1.77 splitter has the correct gender to fit properly.
The signal strength on the Humax is down about 4 points on the stuff which was 80-81 before (the main 6 mux). Com7/8 have fallen over the cliff, so to speak.
The oddest thing about the “correct” gender splitter is that the label is virtually identical to the one from Screwfix, give or take the frequency range, and “CE”.
Compare attached with the face view above.
[attachment=66238,992]
If your COM7/8 is within 4dB of falling over the cliff even without the splitter it’s likely to be unreliable. What aerial are you using ?
I only use f connector splitters, trouble is recommending these posters incorrectly think f connectors are solely for satellite use.
As I found out to my cost though Graham I couldn’t get away with losing 4db on COM7/8.
The really odd thing about this though is that I can still get the local mux 36 I think, which shows ‘This is Birmingham’ which is on even lower power than COM7/8 even when it’s ‘high pressure’ weather and COM7/8 have gone off the cliff.
I have tried a 5db to 20db attenuator (just in case the signal was ‘too strong’). This made the problem worse. I will just sit it out until the frequency is shut down. I’ve got Freesat so all is not lost.
Faust – 1 minute ago »
As I found out to my cost though Graham I couldn’t get away with losing 4db on COM7/8.
The really odd thing about this though is that I can still get the local mux 36 I think, which shows ‘This is Birmingham’ which is on even lower power than COM7/8 even when it’s ‘high pressure’ weather and COM7/8 have gone off the cliff.
I have tried a 5db to 20db attenuator (just in case the signal was ‘too strong’). This made the problem worse. I will just sit it out until the frequency is shut down. I’ve got Freesat so all is not lost.
The difference is the local mux isn’t part of a SFN so not affected by adjacent transmitters using the same UHF carriers.
Faust – 3 hours ago »
The really odd thing about this though is that I can still get the local mux 36 I think, which shows ‘This is Birmingham’ which is on even lower power than COM7/8
The local muxes are broadcast using QPSK modulisiation. QSPK is far more robust than the QAM modulisation used for the other multiplexes. The modulisation used is so robust compared to the other muxes that it makes a direct comparison of power levels alone meaningless.
grahamlthompson – 8 hours ago »
Faust – 1 minute ago »
As I found out to my cost though Graham I couldn’t get away with losing 4db on COM7/8.
The really odd thing about this though is that I can still get the local mux 36 I think, which shows ‘This is Birmingham’ which is on even lower power than COM7/8 even when it’s ‘high pressure’ weather and COM7/8 have gone off the cliff.
I have tried a 5db to 20db attenuator (just in case the signal was ‘too strong’). This made the problem worse. I will just sit it out until the frequency is shut down. I’ve got Freesat so all is not lost.
The difference is the local mux isn’t part of a SFN so not affected by adjacent transmitters using the same UHF carriers.
I was talking to an aerial fitter a couple of weeks ago from the Stoke on Trent area. He was telling me they are having some real issues with COM7/8 in Stoke. Apparently they have been advising people they need to switch from a Group A aerial to a wideband (mainly Log Periodic like I have had fitted).
However, even when they have fitted new aerials customers still can’t get COM 7/8. The fitter was saying that in Stoke part of the city can only get a signal from the Fenton transmitter whereas the other half can use either Fenton or the main transmitter at Sutton Coldfield. The fitter thinks that the SC transmitter may be causing interference for those using Fenton and Fenton is causing interference for those on SC.
Whether that is true or not I couldn’t say, though I know Fenton is a relay for SC. A quick search shows COM 7 Fenton on C32 (562.0MHz) and COM 8 on C34 (578.0MHz) whereas Sutton is on COM 7 C55 (746MHz) and COM 8 on C56 (754MHz)
Fenton changed to 55/56 in early March.
A1944 – 14 hours ago »
Fenton changed to 55/56 in early March.
So does this then put Fenton relay on the same frequencies as Sutton Coldfield COM 7 C55 (746MHz) and COM 8 on C56 (754MHz) and if so would that cause interference with each other despite one being Horizontal and the other Vertical?
Faust – 56 minutes ago »
A1944 – 14 hours ago »
Fenton changed to 55/56 in early March.
So does this then put Fenton relay on the same frequencies as Sutton Coldfield COM 7 C55 (746MHz) and COM 8 on C56 (754MHz) and if so would that cause interference with each other despite one being Horizontal and the other Vertical?
That’s the SFN bit (Single Frequency Network). The plan is that all com 7 and com 8 mux will move to the same frequencies for a period.
http://www.telecomabc.com/s/sfn.html
There will be some areas where the two interfere with each other (mush areas) and I guess they will get larger under high pressure uplift conditions.
All my channels are in a SFN group. It works fine for me because of geographic location. The others in the group are in completely different directions so are much weaker even if you aligned an aerial on them.
grahamlthompson – 13 minutes ago »
Faust – 56 minutes ago »
A1944 – 14 hours ago »
Fenton changed to 55/56 in early March.
So does this then put Fenton relay on the same frequencies as Sutton Coldfield COM 7 C55 (746MHz) and COM 8 on C56 (754MHz) and if so would that cause interference with each other despite one being Horizontal and the other Vertical?
That’s the SFN bit (Single Frequency Network). The plan is that all com 7 and com 8 mux will move to the same frequencies for a period.
http://www.telecomabc.com/s/sfn.html
There will be some areas where the two interfere with each other (mush areas) and I guess they will get larger under high pressure uplift conditions.
All my channels are in a SFN group. It works fine for me because of geographic location. The others in the group are in completely different directions so are much weaker even if you aligned an aerial on them.
Well I would imagine that Fenton and SC would be synchronised as Fenton is a relay of SC. The other safeguard re: cross interference is the aerial itself. I have had a Log Periodic fitted which is supposed to have a narrow acceptance angle thus minimising cross-interference and yet COM 7/8 has become very hit and miss for our property.
One day it can be signal strength 90 quality 100 the next day it’s pulsing between SS 0 SQ 0 to SS 65 SQ 70 in a matter of almost milliseconds causing total picture absence or picture breakup.
I certainly daren’t set any programmes to record from channels 55 and 56 due to the unpredictable reception.
Faust – 3 minutes ago »
grahamlthompson – 13 minutes ago »
Faust – 56 minutes ago »
A1944 – 14 hours ago »
Fenton changed to 55/56 in early March.
So does this then put Fenton relay on the same frequencies as Sutton Coldfield COM 7 C55 (746MHz) and COM 8 on C56 (754MHz) and if so would that cause interference with each other despite one being Horizontal and the other Vertical?
That’s the SFN bit (Single Frequency Network). The plan is that all com 7 and com 8 mux will move to the same frequencies for a period.
http://www.telecomabc.com/s/sfn.html
There will be some areas where the two interfere with each other (mush areas) and I guess they will get larger under high pressure uplift conditions.
All my channels are in a SFN group. It works fine for me because of geographic location. The others in the group are in completely different directions so are much weaker even if you aligned an aerial on them.
Well I would imagine that Fenton and SC would be synchronised as Fenton is a relay of SC. The other safeguard re: cross interference is the aerial itself. I have had a Log Periodic fitted which is supposed to have a narrow acceptance angle thus minimising cross-interference and yet COM 7/8 has become very hit and miss for our property.
One day it can be signal strength 90 quality 100 the next day it’s pulsing between SS 0 SQ 0 to SS 65 SQ 70 in a matter of almost milliseconds causing total picture absence or picture breakup.
I certainly daren’t set any programmes to record from channels 55 and 56 due to the unpredictable reception.
They have to be sychronised, the issue is down to the guard interval and location. As the link explains the system works by unwanted channels being recognised as from the same transmitter but arising from a reflected signal (reflected signals arive a little later). This gives ghosting on analogue systems. The system breaks down when the reciever can’t tell which is the wanted one.
grahamlthompson – 3 hours ago »
Faust – 3 minutes ago »
grahamlthompson – 13 minutes ago »
Faust – 56 minutes ago »
A1944 – 14 hours ago »
Fenton changed to 55/56 in early March.
So does this then put Fenton relay on the same frequencies as Sutton Coldfield COM 7 C55 (746MHz) and COM 8 on C56 (754MHz) and if so would that cause interference with each other despite one being Horizontal and the other Vertical?
That’s the SFN bit (Single Frequency Network). The plan is that all com 7 and com 8 mux will move to the same frequencies for a period.
http://www.telecomabc.com/s/sfn.html
There will be some areas where the two interfere with each other (mush areas) and I guess they will get larger under high pressure uplift conditions.
All my channels are in a SFN group. It works fine for me because of geographic location. The others in the group are in completely different directions so are much weaker even if you aligned an aerial on them.
Well I would imagine that Fenton and SC would be synchronised as Fenton is a relay of SC. The other safeguard re: cross interference is the aerial itself. I have had a Log Periodic fitted which is supposed to have a narrow acceptance angle thus minimising cross-interference and yet COM 7/8 has become very hit and miss for our property.
One day it can be signal strength 90 quality 100 the next day it’s pulsing between SS 0 SQ 0 to SS 65 SQ 70 in a matter of almost milliseconds causing total picture absence or picture breakup.
I certainly daren’t set any programmes to record from channels 55 and 56 due to the unpredictable reception.
They have to be sychronised, the issue is down to the guard interval and location. As the link explains the system works by unwanted channels being recognised as from the same transmitter but arising from a reflected signal (reflected signals arive a little later). This gives ghosting on analogue systems. The system breaks down when the reciever can’t tell which is the wanted one.
RE: guard interval it’s 1/16 for both COM 7/8. What is going to happen in 2020/21 with these muxes? Do we know what frequencies these channels will occupy?
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