- This topic has 14 replies, 6 voices, and was last updated 4 years, 9 months ago by
.
-
Posts
-
Hi,
Been on with Freeview Support regarding lower signal strength on several channels.These are BBC4 HD BBC News HD and Quest HD.
I was told to carry out an initial scan with aerial lead out then in.
That did help with Live TV but the signal through the Humax is still showing 46/48% strength.All other BBC HD channels are fine.
Have factory reset the box and have Manual tune these channels which are on Ch55.But still the picture breaks up.
Any ideas…have the box quite a few yrs but recordings etc are working fine.
Many Thanks
Those channels are on a on a lower power Mux that is moving to Single Frequency Working and is not available on all transmitters. As adjacent transmitters move to use the same frequency there will be locations that find it hard to receive them.
Without more info like a postcode close to you to identify which is your main transmitter hard to help other than suggest a possible reason.
Hi
Sorry for the re posts..not sure what happened on phone.
Post Code Area is BT67.Freeview had advised me to get aerial checked but not sure it’s anything to do with that.It,s an external aerial.
Cheers
Gerrymac – 5 hours ago »
That did help with Live TV but the signal through the Humax is still showing 46/48% strength.All other BBC HD channels are fine.
Have factory reset the box and have Manual tune these channels which are on Ch55.But still the picture breaks up.
Any ideas…have the box quite a few yrs but recordings etc are working fine.
Many Thanks
If your recordings are fine what is the issue you are experiencing?
Providing the aerial is supplying a cleanish signal 50% strength on most HDR-Fox T2s the quality is fine. On my ancient aerial, and wiring, I have to dampen the strength of the signal to below 30% before the quality reading on my HDR-Fox T2s drops below 100% and only then are there issues.
Gerrymac – 7 hours ago »
Been on with Freeview Support regarding lower signal strength on several channels. These are BBC4 HD BBC News HD and Quest HD.
I was told to carry out an initial scan with aerial lead out then in.
That did help with Live TV but the signal through the Humax is still showing 46/48% strength.
Signal strength isn’t the important parameter; what are the signal quality readings?
Gerrymac – 12 hours ago »
Hi
Sorry for the re posts..not sure what happened on phone.
Admin: Deleted two posts that were empty.
Hi Martin
Signal Quality is 100% on all channels.The ones that have picture break up are 46/48% Strength (Ch55,746000KHz,8MHz,32K,1/16(DVB-T2))
RE recordings…the box is working fine just the 3 channels are unwatchable sometimes.
They are watchable while viewing thru TV only.
My best up is Aerial> Humax> TV..Most of the time I watch Live TV and use box to record.If I record BBC4 HD it,s unwatchable.
Gerrymac – 6 hours ago »
Signal Quality is 100% on all channels.The ones that have picture break up are 46/48% Strength (Ch55,746000KHz,8MHz,32K,1/16(DVB-T2))
Ok. I understand your problem now. Could you send me a Private Message (link at near top right of Forum) with your full postcode please?
Gerrymac sent me his full post code and I think he should be able to receive the channels carried by the COM7 HD multiplex satisfactorily. My only thought is that the next highest broadcast channel number carried by Divis is 30. I wonder if it is possible that your aerial isn’t a wideband type and is a Group A, B or K which will have reduced performance when receiving channel 55; perhaps talk to an aerial installer for his thoughts. Keep in mind that COM7 HD mux isn’t likely to be around forever. At one time it was possible it would close in 2020 which it didn’t; 2022 in another possible closure date but in a quick search I couldn’t find anything authoritative; anybody have more information?
OK Martin
Will have a chat he only lives round the corner.He was up lately changing the multi-plexer which deals with our RTÈ Signal (different aerial/direction)..all them channels through the Humax are all spot on.
Many thanks for taking the time to reply.Will let you know of any updates.
Cheers
Gerrymac – 2 days ago »
Hi Martin
Signal Quality is 100% on all channels.The ones that have picture break up are 46/48% Strength (Ch55,746000KHz,8MHz,32K,1/16(DVB-T2))
RE recordings…the box is working fine just the 3 channels are unwatchable sometimes.
They are watchable while viewing thru TV only.
My best up is Aerial> Humax> TV..Most of the time I watch Live TV and use box to record.If I record BBC4 HD it,s unwatchable.
That is National COM 7 and as already been stated is on low power. I can lose these channels every time we get a high pressure inversion. The Humax tuners do return a lower power value than the TV and it tends to be the Humax that drops the channels.
Faust – 8 hours ago »
That is National COM 7 and as already been stated is on low power. I can lose these channels every time we get a high pressure inversion. The Humax tuners do return a lower power value than the TV and it tends to be the Humax that drops the channels.
True but the Freeview coverage checker thinks he should be able to get a good signal (S 99% M100%). What does it say for your location?
Martin Liddle – 20 hours ago »
Faust – 8 hours ago »
That is National COM 7 and as already been stated is on low power. I can lose these channels every time we get a high pressure inversion. The Humax tuners do return a lower power value than the TV and it tends to be the Humax that drops the channels.
True but the Freeview coverage checker thinks he should be able to get a good signal (S 99% M100%). What does it say for your location?
Now 92 100 Final by 2025 92 100. The TV can and does return similar values with low pressure/ordinary weather patterns, but will drop off somewhat with high pressure. However I have yet to see those values via any Humax box e.g. 2000T, DTR 2100 and the Aura. All the Humax kit struggles to hold onto COM7 when weather pressure is high.
Hi,
Was speaking with my local TV Engineer and he has told me that these 3 channels are transmitted on a higher frequency (HD) and the diplexer won’t let them through.
Have to watch these in SD.
Thanks for the input.
Cheers
Gerrymac – 1 hour ago »
Was speaking with my local TV Engineer and he has told me that these 3 channels are transmitted on a higher frequency (HD) and the diplexer won’t let them through.
Have to watch these in SD.
Thanks for the input.
Yes that makes sense (not that I know anything about the frequency limitations of diplexers); thanks for coming back with that extra information.
- You must be logged in to reply to this topic.