All posts by sparky
Below are all of sparky's postings, with the most recent are at the bottom of the page.dave,i might have spoken to soon,i just checked the bbc on epg 810 etc they seem to have aquired the same breaking up problem,so it looks like it has just swapped them in the epg.
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dave, i have just done an autotune to see if these channels would revert,channels 810-819 have disappeared,all other channels still working ok,including bbc channels,i have also notice in the signal checking bit that channel 44 has disappered,this is a channel on the hemel hempstead transmitter,i wonder if this could have been interfering with the cp signal.
on the old digihome it would indicate what transmitter it was scanning ,the humax does not seem to show this unless i am missing something.
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sparky:
Hi jb38
Thanks for your reply.
Following the 7mhz scan every thing worked perfectly,even recording all channels,the epg was in the correct order and the 800 series BBC channels have disappeared.(the ITV ones are still there but nothing on them),the signal was still being reported as 8mhz though.
The only anomaly was on the BBC channel recordings they were marked as channel 800 series although they were in position 1,2 etc. I then took the set top aerial upstairs and extended the co-ax up to one of the front bedroom windows facing CP and did a full auto-rescan(at first with no aerial plugged in).
I achieved a 51% signal /100 quality with this set-up and the Humax seems to work fine,no breaking up ,no noise on the picture and recording with the correct channels indicated in the epg.
The only thing that I think could have been incorrect is that the wideband was picking up channel 44 from the Hemel Hempstead relay (despite not pointing in that direction and in fact being horizontal opposed to it) and as Dave said,putting them in the position 1,2 etc in the epg.
On this latest rescan channel 44 is not shown in the signal section,another channel has appeared (channel 59 but there is no signal on this ) whereas channel 44 was showing sporadic 48 to 55 signal strength.
I have now reconnected the wideband aerial and the signal/quality is about the same (with out the amp)with the amp it is about 72signal /100 quality but the picture has stayed the about the same.
Apart from that I don,t know what the problem was,it seems this digital stuff is a bit more prickly than the old system and as I have read on the atv aerial site it is something of a black art,,if you had snow on the picture on the old system you probably had a signal problem!
I still think the old FM system was better quality,the picture quality on this Humax makes skin tones look pasty just like the satellite signals.
Anyway, I will replace the aerial with one of your suggestions, and use sat grade co-ax to top it off,I hope they stop fiddling around with stuff now.
Thanks again for your help, and Daves too.
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Page 2
Friday 20 April 2012 11:24AM
Hemel Hempstead
sparky:
hi dave,
disregard my previos post,i have just been fiddling around with the humax and did a maual retune on c23,the first time no good same problem, so i tried altering some of the options including dbt to dbt2,no good,i then changed the bandwith from 8mhz to 7mhz and lo and behold it all works perfectly on all channels.
The strange thing is that the signal report still reports the bandwith as 8mhz!!
Any ideas why?