Full Freeview on the Bilsdale (North Yorkshire, England) transmitter

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8:12 PM

Darren Brown: Have you had your Group A replaced with a or Group K one?

The Commercial (COM) from are out of the former group.

If your aerial hasn't been replaced, then it may be a Group A one which means that it is most sensitive at frequencies within the bottom third of the band. Prior to all analogue channels were in Group A and all except Mux D which carried Film4 and Yesterday were within Group A.

The six channels are:

PSB1 | BBC One |
PSB2 | ITV1 |
PSB3 | BBC One HD |
COM4 | ITV3 |
COM5 | Pick TV |
COM6 | Dave |

Note that the COMs are now in the 40s which is above Group A. Mux D was formerly on at much lower .

A Group K aerial will be best for Bilsdale now:

Bilsdale TV Transmitter

Group K covers Group A and Group B; Group B being the middle third of the band, where the COMs are.

D

Darren Brown
8:52 PM

Darren Brown:
Dave Lindsay: Cheers Dave. Thanks for your mate. Will let you know how I get on.

Darren Brown's 7 posts GB flag

D

Darren Brown
9:01 PM

Dave Lindsay: Sorry forgot to mention, I havent changed my but will do.

Darren Brown's 7 posts GB flag

A

Alan
12:34 PM
Stockton-on-tees

Since the switch over my PVR keeps loosing the on Com 5. A manual or automatic retune finds them ok but they drop out at random times or if the PVR goes into standby. The tv is fine and the digi box on an old tv is also fine....we have a on because prior to the switch over we had problems with channel drop out and break up and the booster resolved it. Although pick tv did remain troublesome on the pvr. Post Code TS17 0SH. on Tees.
I guess this is an obvious question but does this seem like a PVR fault? and if so why only certain channels and not all of them? Is it possible we may no longer need the booster on since the increase in power and could this be the problem? I need to get this working because the wife likes Star Trek and likes to watch it after working late....

Alan's 4 posts GB flag

Alan's: A's Freeview map A's terrain plot A's frequency data A's Freeview Detailed Coverage

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1:56 PM

Alan: Different receivers have differing tollerances and therefore I wouldn't jump to the conclusion that there is a fault.

The thing to be aware of about is that aerials may require replacement because some are out of the former group.

In the days of four-channel analogue, each used four UHF channels (frequencies) from within the same "group". Each group is a portion of the band of frequencies used for TV.

Aerials that were installed were usually grouped meaning that they are most sensitive of one particular group and that they drop off in sensitivity outside of the group.

Bilsdale was Group A ( to ) for all five analogue channels and all pre- digital multiplexes, except for one (Mux D which carried Film4, Yesterday etc). Group A is the bottom third of the band.

Post-switchover the Public Service (PSB) channels are on Group A channels, but the three Commercial (COM) channels are in Group B (middle third of the band). COM5 is the highest of the COMs which is on .

The channels are (those in brackets are the pre-switchover channels of the equivalent multiplexes):

PSB1 | BBC One | ()
PSB2 | ITV1 | (C21)
PSB3 | BBC One HD | (n/a)
COM4 | ITV3 | ()
COM5 | Pick TV | C46 ()
COM6 | Film4 | ()

Prior to switchover the may have been needed because the digital signals were on much lower . It is, of course, always worth a try without it. But I wonder if it may in practice be being used now to compensate for the weaker signals due to them being out of group.

To understand the sensitivities of aerials, see these example curves:

Gain (curves), Again

If, having tried removing the booster, it doesn't work and you decide to replace the I suggest that you get a Group K aerial if you get a yagi type or if it's a log periodic, then these are but have a flatter response than yagis (see gain curves on above link).

See here for some pointers:

Bilsdale TV Transmitter

J

Jan
7:28 PM

Please me I live in and have always recieved my from after the on the 26th I have now lost like 5+1 5usa 5* dave challange quest and im gutted why is this why have they gone i have retuned 3 times since yesterday and its still not there!!!! help

Jan's 4 posts GB flag

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7:41 PM

Jan: Try manually tuning for them. 5+1, 5USA, 5* and Quest are carried on COM4 which is on UHF channel 43 from and Dave and Challenge are on COM5 which are on .

Perhaps you need your replacing to receive the COM channels. I covered this in response to Alan in the posting immediately before yours.

M

Matt
10:03 PM

I live in Pickering, and have had an acceptable on all until the . Now PSB1 experineces freezing and breakup. I am using a digital and a 4 way . I believe this is caused by too strong a signal from BBCA, so I have reduced the on the booster. However, the signal is not at all maxing out, (strength 8 7.) If anyone can with this please. I am using a Thomspon top up tv box

Matt's 3 posts GB flag

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11:21 AM

Matt: Have you confirmed that it is not picking up 's BBCA on instead of 's which is on ?

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11:36 AM

Could someone suggest why it might be that the DUK Postcode Checker "thinks" that the PSBs aren't as good as the COMs in the Saltburn-by-the-Sea area?

There appears to be no co- transmitters that could degrade and the COMs are on half- to the PSBs. So surely the COMs would be most likely to be not as good as the PSBs, if any.

Postcode Checker - Detailed View

Postcode Checker - Detailed View

Up the coast at , all are "good", but the figures for served and marginal are slightly down for the PSBs:

Postcode Checker - Detailed View

I appreciate that the DUK is a calculation and therefore there may be variables that aren't totally correct. But what could make the predictor give this result. Could it be ?