• Timetable for BBC 1 HD on Freeview

    From Mark Carver@21:1/5 to All on Tue Mar 21 13:16:50 2023
    Some areas tomorrow, others in a month

    https://www.bbc.co.uk/mediacentre/articles/2023/changes-bbc-one-hd-freeview-youview-england

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  • From Dickie mint@21:1/5 to Mark Carver on Tue Mar 21 19:27:13 2023
    On 21/03/2023 13:16, Mark Carver wrote:
    Some areas tomorrow, others in a month

    https://www.bbc.co.uk/mediacentre/articles/2023/changes-bbc-one-hd-freeview-youview-england

    As my loft aerial is the wrong group and the trees it 'points' through
    to see Sutton Coldfield insist on growing a few feet every year and bush
    out, I may have to consider an outdoor installation!

    It's be interesting to know how the transmitter work has been done. Alas
    I have no contacts anymore.

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  • From wrightsaerials@f2s.com@21:1/5 to Dickie mint on Tue Mar 21 17:41:49 2023
    On Tuesday, 21 March 2023 at 19:27:16 UTC, Dickie mint wrote:
    On 21/03/2023 13:16, Mark Carver wrote:
    Some areas tomorrow, others in a month

    https://www.bbc.co.uk/mediacentre/articles/2023/changes-bbc-one-hd-freeview-youview-england
    As my loft aerial is the wrong group and the trees it 'points' through
    to see Sutton Coldfield insist on growing a few feet every year and bush
    out, I may have to consider an outdoor installation!

    It's be interesting to know how the transmitter work has been done. Alas
    I have no contacts anymore.
    Don't assume that an outdoor aerial will work OK if you are behind trees.
    Bill

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  • From Mark Carver@21:1/5 to Dickie mint on Wed Mar 22 07:59:48 2023
    On 21/03/2023 19:27, Dickie mint wrote:
    On 21/03/2023 13:16, Mark Carver wrote:
    Some areas tomorrow, others in a month

    https://www.bbc.co.uk/mediacentre/articles/2023/changes-bbc-one-hd-freeview-youview-england


    As my loft aerial is the wrong group and the trees it 'points' through
    to see Sutton Coldfield insist on growing a few feet every year and
    bush out, I may have to consider an outdoor installation!

    It's be interesting to know how the transmitter work has been done.
    Alas I have no contacts anymore.
    Nothing is/will be happening at the transmitters. It's all at the CCMs

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  • From Scott@21:1/5 to wrightsaerials@f2s.com on Wed Mar 22 09:41:23 2023
    On Tue, 21 Mar 2023 17:41:49 -0700 (PDT), "wrightsaerials@aol.com" <wrightsaerials@f2s.com> wrote:

    On Tuesday, 21 March 2023 at 19:27:16 UTC, Dickie mint wrote:
    On 21/03/2023 13:16, Mark Carver wrote:
    Some areas tomorrow, others in a month

    https://www.bbc.co.uk/mediacentre/articles/2023/changes-bbc-one-hd-freeview-youview-england
    As my loft aerial is the wrong group and the trees it 'points' through
    to see Sutton Coldfield insist on growing a few feet every year and bush
    out, I may have to consider an outdoor installation!

    It's be interesting to know how the transmitter work has been done. Alas
    I have no contacts anymore.
    Don't assume that an outdoor aerial will work OK if you are behind trees.

    But on the original theme, can Dickie assume that the HD signal will
    be more robust than the existing SD signal, given I thought DVB-T2 had
    better error correction?

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  • From Mark Carver@21:1/5 to Scott on Wed Mar 22 15:59:48 2023
    On 22/03/2023 09:41, Scott wrote:
    On Tue, 21 Mar 2023 17:41:49 -0700 (PDT), "wrightsaerials@aol.com" <wrightsaerials@f2s.com> wrote:

    On Tuesday, 21 March 2023 at 19:27:16 UTC, Dickie mint wrote:
    On 21/03/2023 13:16, Mark Carver wrote:
    Some areas tomorrow, others in a month

    https://www.bbc.co.uk/mediacentre/articles/2023/changes-bbc-one-hd-freeview-youview-england
    As my loft aerial is the wrong group and the trees it 'points' through
    to see Sutton Coldfield insist on growing a few feet every year and bush >>> out, I may have to consider an outdoor installation!

    It's be interesting to know how the transmitter work has been done. Alas >>> I have no contacts anymore.
    Don't assume that an outdoor aerial will work OK if you are behind trees.
    But on the original theme, can Dickie assume that the HD signal will
    be more robust than the existing SD signal, given I thought DVB-T2 had
    better error correction?
    It does, but it's also a more complex signal. 256QAM is used for PSB 3 (compared with 64QAM for the main T1 muxes), so swings and roundabouts possibly.....

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  • From NY@21:1/5 to Mark Carver on Wed Mar 22 16:41:11 2023
    "Mark Carver" <mark.carver@invalid.invalid> wrote in message news:k80mvkFpdmrU2@mid.individual.net...
    On 22/03/2023 09:41, Scott wrote:
    On Tue, 21 Mar 2023 17:41:49 -0700 (PDT), "wrightsaerials@aol.com"
    <wrightsaerials@f2s.com> wrote:

    On Tuesday, 21 March 2023 at 19:27:16 UTC, Dickie mint wrote:
    On 21/03/2023 13:16, Mark Carver wrote:
    Some areas tomorrow, others in a month

    https://www.bbc.co.uk/mediacentre/articles/2023/changes-bbc-one-hd-freeview-youview-england
    As my loft aerial is the wrong group and the trees it 'points' through >>>> to see Sutton Coldfield insist on growing a few feet every year and
    bush
    out, I may have to consider an outdoor installation!

    It's be interesting to know how the transmitter work has been done.
    Alas
    I have no contacts anymore.

    Don't assume that an outdoor aerial will work OK if you are behind
    trees.
    But on the original theme, can Dickie assume that the HD signal will
    be more robust than the existing SD signal, given I thought DVB-T2 had
    better error correction?

    It does, but it's also a more complex signal. 256QAM is used for PSB 3 (compared with 64QAM for the main T1 muxes), so swings and roundabouts possibly.....

    Subjectively, I'd say that if an uncorrectable glitch *does* occur with HD,
    the effects are more intrusive. I'm not sure whether that is the "fault" of
    the different encoding (256QAM rather than 64QAM) or the different codec
    (H264 rather then MPEG).

    As someone else has said up-thread, the work wasn't at the transmitter or
    its multiplexer. It was a change in routing the feed from the regions so
    each transmitter receives a *different* version of BBC One, rather than most receiving a red slate during the regional news.

    Does anyone have a diagram for the new topology? Because of the different versions of both BBC One and ITV, I presume that all the BBC regions and all the ITV regions feed their own local news (and other regional programmes) to
    a central switching centre which then makes up copies of PSB3 containing
    both a unique BBC One and a unique ITV for feeding to the relevant transmitters, switching between the unique parts (local news and ITV
    adverts) and network parts (the programmes).

    At least there isn't the dreaded glitch during the switchover between local
    and national at each ad break and either side of the regional news, as I remember sometimes happening in the days of analogue. "Nationwide" was notorious for picture roll during their "regional bounce" when they switched from one region to the next and the next, and then back to the London
    studio. I remember sometimes seeing a static bar on the bank of monitors because all the signals were in sync but there was a phase difference
    between one region and another because of the distance-related time taken to send the master sync from studio to each region and then the region's signal travelling back to the studio. That was probably in the early days before variable delay synchronisers were available to correct for that.

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  • From Mark Carver@21:1/5 to All on Wed Mar 22 17:05:43 2023
    On 22/03/2023 16:41, NY wrote:

    As someone else has said up-thread, the work wasn't at the transmitter
    or its multiplexer. It was a change in routing the feed from the
    regions so each transmitter receives a *different* version of BBC One,
    rather than most receiving a red slate during the regional news.
    The multiplexers are nowhere near the transmitters, haven't ever been in
    fact. I'm not explaining it all again,  for the up-teempth bloody time.

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  • From Max Demian@21:1/5 to wrightsaerials@aol.com on Wed Mar 22 16:24:38 2023
    On 22/03/2023 00:41, wrightsaerials@aol.com wrote:
    On Tuesday, 21 March 2023 at 19:27:16 UTC, Dickie mint wrote:
    On 21/03/2023 13:16, Mark Carver wrote:
    Some areas tomorrow, others in a month

    https://www.bbc.co.uk/mediacentre/articles/2023/changes-bbc-one-hd-freeview-youview-england
    As my loft aerial is the wrong group and the trees it 'points' through
    to see Sutton Coldfield insist on growing a few feet every year and bush
    out, I may have to consider an outdoor installation!

    It's be interesting to know how the transmitter work has been done. Alas
    I have no contacts anymore.
    Don't assume that an outdoor aerial will work OK if you are behind trees.

    Might do if it has a 50' mast.

    --
    Max Demian

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  • From charles@21:1/5 to max_demian@bigfoot.com on Wed Mar 22 16:40:10 2023
    In article <tvfa46$mhr7$2@dont-email.me>, Max Demian
    <max_demian@bigfoot.com> wrote:
    On 22/03/2023 00:41, wrightsaerials@aol.com wrote:
    On Tuesday, 21 March 2023 at 19:27:16 UTC, Dickie mint wrote:
    On 21/03/2023 13:16, Mark Carver wrote:
    Some areas tomorrow, others in a month

    https://www.bbc.co.uk/mediacentre/articles/2023/changes-bbc-one-hd-freeview-youview-england
    As my loft aerial is the wrong group and the trees it 'points' through
    to see Sutton Coldfield insist on growing a few feet every year and
    bush out, I may have to consider an outdoor installation!

    It's be interesting to know how the transmitter work has been done.
    Alas I have no contacts anymore.
    Don't assume that an outdoor aerial will work OK if you are behind
    trees.

    Might do if it has a 50' mast.

    Like a 20 ft scaf pole on top of a telephone pole?

    --
    from KT24 in Surrey, England - sent from my RISC OS 4té
    "I'd rather die of exhaustion than die of boredom" Thomas Carlyle

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  • From John Hall@21:1/5 to charles@candehope.me.uk on Wed Mar 22 18:06:50 2023
    In message <5a8937efb5charles@candehope.me.uk>, charles <charles@candehope.me.uk> writes
    In article <tvfa46$mhr7$2@dont-email.me>, Max Demian
    <max_demian@bigfoot.com> wrote:
    On 22/03/2023 00:41, wrightsaerials@aol.com wrote:
    On Tuesday, 21 March 2023 at 19:27:16 UTC, Dickie mint wrote:
    On 21/03/2023 13:16, Mark Carver wrote:
    Some areas tomorrow, others in a month









    https://www.bbc.co.uk/mediacentre/articles/2023/changes-bbc-one-hd-freeview-youview-england
    As my loft aerial is the wrong group and the trees it 'points' through
    to see Sutton Coldfield insist on growing a few feet every year and
    bush out, I may have to consider an outdoor installation!

    It's be interesting to know how the transmitter work has been done.
    Alas I have no contacts anymore.
    Don't assume that an outdoor aerial will work OK if you are behind
    trees.

    Might do if it has a 50' mast.

    Like a 20 ft scaf pole on top of a telephone pole?


    How about fixing the mast to the top of the highest tree? (Said tongue
    in cheek, of course.)
    --
    John Hall "Do you have cornflakes in America?"
    "Well, actually, they're American."
    "So what brings you to Britain then if you have cornflakes already?"
    Bill Bryson: "Notes from a Small Island"

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  • From Andy Burns@21:1/5 to Mark Carver on Wed Mar 22 18:32:58 2023
    Mark Carver wrote:

    Some areas tomorrow

    All seems to have gone as planned, Waltham now has E.MidsToday in SD on
    LCN1 and in HD on LCN101 ... no more farting hippos*


    [*] yeah, yeah ...

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  • From NY@21:1/5 to Mark Carver on Thu Mar 23 00:29:34 2023
    On 22/03/2023 17:05, Mark Carver wrote:
    On 22/03/2023 16:41, NY wrote:

    As someone else has said up-thread, the work wasn't at the transmitter
    or its multiplexer. It was a change in routing the feed from the
    regions so each transmitter receives a *different* version of BBC One,
    rather than most receiving a red slate during the regional news.
    The multiplexers are nowhere near the transmitters, haven't ever been in fact. I'm not explaining it all again,  for the up-teempth bloody time.

    Sorry, I should have clarified that when I referred to "the transmitter
    or its multiplexer" I wasn't implying that they were they were located
    in the same place. I realise that all the muxers will be in one central switching zone which will switch between (for example) BBC One national
    and BBC One Yorkshire regional news (and likewise for ITV national and
    ITV Yorkshire regional news or the Yorkshire-specific adverts), and send
    the combined PSB3 stream to Yorkshire's transmitters, and likewise for
    all the other versions of PSB3, each with its own regional programmes
    insert between the national programmes.

    Am I right that, in essence, BBC One is now treated in a similar way
    (similar topology) to ITV?

    Is there a good BBC article which describes the before-and-after
    technical setup and signal flow, and why BBC One didn't until recently
    do it the way that ITV have done for ages?

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  • From Mark Carver@21:1/5 to All on Thu Mar 23 08:43:46 2023
    On 23/03/2023 00:29, NY wrote:
    On 22/03/2023 17:05, Mark Carver wrote:
    On 22/03/2023 16:41, NY wrote:

    As someone else has said up-thread, the work wasn't at the
    transmitter or its multiplexer. It was a change in routing the feed
    from the regions so each transmitter receives a *different* version
    of BBC One, rather than most receiving a red slate during the
    regional news.
    The multiplexers are nowhere near the transmitters, haven't ever been
    in fact. I'm not explaining it all again,  for the up-teempth bloody
    time.

    Sorry, I should have clarified that when I referred to "the
    transmitter or its multiplexer" I wasn't implying that they were they
    were located in the same place. I realise that all the muxers will be
    in one central switching zone which will switch between (for example)
    BBC One national and BBC One Yorkshire regional news (and likewise for
    ITV national and ITV Yorkshire regional news or the Yorkshire-specific adverts), and send the combined PSB3 stream to Yorkshire's
    transmitters, and likewise for all the other versions of PSB3, each
    with its own regional programmes insert between the national programmes.

    Am I right that, in essence, BBC One is now treated in a similar way
    (similar topology) to ITV?

    That happened in 2021, instead of Network BBC 1 'tromboning' through
    each region, each region is now a remote source into the CCM. (Although
    the regions still have a network feed delivered to them, and the
    tromboning still occurs from about a minute before they opt out, and for
    a few seconds afterwards. If you live in an HD region you won't notice,
    if you're in an SD region, you will, the national network news drops
    into upscaled fuzzy vision.  ITV don't do any 'on air' tromboning
    through their regions, they are remote sources that are switched in and
    out at Chiswick and Leeds. Both methods have their pros and cons, but as
    far as how the PSB 3 (and PSB 1/2) regional feeds work and are coded
    it's the same,

    Is there a good BBC article which describes the before-and-after
    technical setup and signal flow, and why BBC One didn't until recently
    do it the way that ITV have done for ages?

    I don't think there is. It made sense for ITV to adopt the centralised switching a long time ago, because of course there is regional content
    every 15-20 mins on ITV 1 all day long for them. There are 15 or so
    different ad breaks, and the ads are all played out from Chiswick or
    Leeds via the automation systems, so it makes sense to make the the
    regional news the same sort of events.

    However, not without risks (this is from 2007, so ITV have been doing it
    a long time)
    https://www.youtube.com/watch?v=x6bes9i2JbM

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  • From NY@21:1/5 to Mark Carver on Thu Mar 23 11:10:29 2023
    "Mark Carver" <mark.carver@invalid.invalid> wrote in message news:k82hq2F5174U1@mid.individual.net...

    However, not without risks (this is from 2007, so ITV have been doing it a long time)
    https://www.youtube.com/watch?v=x6bes9i2JbM

    Whoops. I'm amazed that *no-one* in the gallery noticed. Do they still have
    an "On Air" light in the gallery and the studio for live broadcasts to show exactly when they are and aren't going out live? It's very lucky that she didn't say anything "naughty". I remember the scene in one of the Bridget
    Jones films where a newsreader is having a conversation with Bridget (who's
    in the gallery) in the run-up to a news bulletin and the presenter switches effortlessly between raunchy story and her "professional" voice in
    between the "bongs" at the start of the bulletin: https://www.imdb.com/title/tt1473832/quotes?ref_=tttr_ql_trv_4 (quote
    beginning "Bridget and Miranda are chatting on studio talkback"). The other
    one was in the BBC mini-series In the Red in which Sally Phillips is playing
    a Radio 4 newsreader who is so spaced out and giggly that she is almost
    falling off her chair, right up to the second when she goes live, at which point she switches into "professional mode" and delivers a flawless news bulletin (in a voice that is clearly based on Charlotte Green).

    There was an occasion when Radio 4 were broadcasting a tribute programme
    about Alastair Cooke but the continuity announcer was still live as she was talking to someone unheard over talkback. It went on for several minutes.

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  • From Mark Carver@21:1/5 to All on Thu Mar 23 11:19:58 2023
    On 23/03/2023 11:10, NY wrote:
    "Mark Carver" <mark.carver@invalid.invalid> wrote in message news:k82hq2F5174U1@mid.individual.net...

    However, not without risks (this is from 2007, so ITV have been doing
    it a
    long time)
    https://www.youtube.com/watch?v=x6bes9i2JbM

    Whoops. I'm amazed that *no-one* in the gallery noticed. Do they still
    have
    an "On Air" light in the gallery and the studio for live broadcasts to
    show
    exactly when they are and aren't going out live? It's very lucky that she didn't say anything "naughty".
    The gallery staff were all too busy having a banter with her to notice !

    As they say, '...you're never alone, with a micro-phone..'

    As a few presenters and politicians have discovered to their cost over
    the years

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  • From Dickie mint@21:1/5 to wrightsaerials@aol.com on Thu Mar 23 19:06:47 2023
    On 22/03/2023 00:41, wrightsaerials@aol.com wrote:

    Don't assume that an outdoor aerial will work OK if you are behind trees. Bill

    They are some distance away and others in the street have outdoor
    aerials. Satellite signal is fine, just nice to have an alternative
    recording source! Sat PVRs only record two channels and with regional
    HD move BBC1WMHD and BBC2ENGHD are on different polarisations. So we can
    no longer record BBC1 or BBC2 plus,say, itv1 and watch the other BBC
    channel. So recording Freeview becomes more relevant. Which has to be
    using SD as the HD version are now suffering!

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  • From Dickie mint@21:1/5 to Mark Carver on Thu Mar 23 19:16:16 2023
    On 22/03/2023 07:59, Mark Carver wrote:
    On 21/03/2023 19:27, Dickie mint wrote:
    t, I may have to consider an outdoor installation!

    It's be interesting to know how the transmitter work has been done.
    Alas I have no contacts anymore.
    Nothing is/will be happening at the transmitters. It's all at the CCMs

    Oops, poor grammar. Sorry.

    One CCM would have been in Pebble Mill, except its lease was sold from
    under us.

    Work was being done on seamless 'cut and paste' to drop the regional
    output in place of the BBC1 network sustaining feed back in my day, so obviously it now happens!

    And the R & D guys who did write up the original setup left when
    Kingswood Warren was sold from under them! I guess the ones now running
    the show in R & D, etc, aren't allowed or are not the type to do writeups.

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  • From wrightsaerials@f2s.com@21:1/5 to Dickie mint on Fri Mar 24 08:07:04 2023
    On Thursday, 23 March 2023 at 19:06:49 UTC, Dickie mint wrote:
    On 22/03/2023 00:41, wrights...@aol.com wrote:
    Don't assume that an outdoor aerial will work OK if you are behind trees. Bill
    They are some distance away and others in the street have outdoor
    aerials.

    Like I said, 'don't assume'. Most likely it'll be OK but sometimes, against every prior indication that there won't be a problem, it turns out that there is. Trees are buggers like that.

    Bill

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  • From NY@21:1/5 to All on Fri Mar 24 21:23:26 2023
    "wrightsaerials@aol.com" <wrightsaerials@f2s.com> wrote in message news:64457424-7a0e-4b3f-b44b-981bc20e45e3n@googlegroups.com...
    On Thursday, 23 March 2023 at 19:06:49 UTC, Dickie mint wrote:
    On 22/03/2023 00:41, wrights...@aol.com wrote:
    Don't assume that an outdoor aerial will work OK if you are behind
    trees.
    Bill
    They are some distance away and others in the street have outdoor
    aerials.

    Like I said, 'don't assume'. Most likely it'll be OK but sometimes,
    against every prior indication that there won't be a problem, it turns
    out that there is. Trees are buggers like that.

    I imagine (but don't assume!) that trees are at their most "buggerly" when
    they are well-saturated with rainwater which is sufficiently conductive to
    turn the whole tree into a grounded object, with predicable effects on
    signal strength. Is that the case in practice: that periods of poor
    reception involving trees tend to correspond with the after-effects of heavy and prolonged rain?

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  • From wrightsaerials@f2s.com@21:1/5 to All on Sun Mar 26 19:31:12 2023
    On Friday, 24 March 2023 at 21:24:06 UTC, NY wrote:
    "wrights...@aol.com" <wrights...@f2s.com> wrote in message news:64457424-7a0e-4b3f...@googlegroups.com...
    On Thursday, 23 March 2023 at 19:06:49 UTC, Dickie mint wrote:
    On 22/03/2023 00:41, wrights...@aol.com wrote:
    Don't assume that an outdoor aerial will work OK if you are behind
    trees.
    Bill
    They are some distance away and others in the street have outdoor
    aerials.

    Like I said, 'don't assume'. Most likely it'll be OK but sometimes, against every prior indication that there won't be a problem, it turns
    out that there is. Trees are buggers like that.
    I imagine (but don't assume!) that trees are at their most "buggerly" when they are well-saturated with rainwater which is sufficiently conductive to turn the whole tree into a grounded object, with predicable effects on signal strength. Is that the case in practice: that periods of poor reception involving trees tend to correspond with the after-effects of heavy and prolonged rain?
    I've never been aware of that effect. I never had a customer relate reception problems to rain in that way. But absence of evidence isn't evidence of absence.

    The thing with trees is, well yes they do act as a screen, but they also distort the signals that pass through. You get really strange standing wave effects which always suggest to me that there are two or more paths through the woodland area and that
    these paths arrive in different additive or subtractive phase relationships. Polarisation can be twisted. Spot frequencies can be attenuated down to zilch. Trees are weird.

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  • From Brian Gregory@21:1/5 to All on Tue Mar 28 21:20:24 2023
    On 24/03/2023 21:23, NY wrote:
    "wrightsaerials@aol.com" <wrightsaerials@f2s.com> wrote in message news:64457424-7a0e-4b3f-b44b-981bc20e45e3n@googlegroups.com...
    On Thursday, 23 March 2023 at 19:06:49 UTC, Dickie mint wrote:
    On 22/03/2023 00:41, wrights...@aol.com wrote:
    Don't assume that an outdoor aerial will work OK if you are behind
    trees.
    Bill
    They are some distance away and others in the street have outdoor
    aerials.

    Like I said, 'don't assume'. Most likely it'll be OK but sometimes,
    against every prior indication that there won't be a  problem, it
    turns out that there is. Trees are buggers like that.

    I imagine (but don't assume!) that trees are at their most "buggerly"
    when they are well-saturated with rainwater which is sufficiently
    conductive to turn the whole tree into a grounded object, with
    predicable effects on signal strength. Is that the case in practice:
    that periods of poor reception involving trees tend to correspond with
    the after-effects of heavy and prolonged rain?

    Not sure, but it makes sense.

    The trees behind my father's home, in the direction of the Hannington transmitter seem to cause more problems in the Summer when they have
    leaves on them.

    --
    Brian Gregory (in England).

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  • From Mark Carver@21:1/5 to Brian Gregory on Wed Mar 29 08:03:18 2023
    On 28/03/2023 21:20, Brian Gregory wrote:
    On 24/03/2023 21:23, NY wrote:
    "wrightsaerials@aol.com" <wrightsaerials@f2s.com> wrote in message
    news:64457424-7a0e-4b3f-b44b-981bc20e45e3n@googlegroups.com...
    On Thursday, 23 March 2023 at 19:06:49 UTC, Dickie mint wrote:
    On 22/03/2023 00:41, wrights...@aol.com wrote:
    Don't assume that an outdoor aerial will work OK if you are
    behind > trees.
    Bill
    They are some distance away and others in the street have outdoor
    aerials.

    Like I said, 'don't assume'. Most likely it'll be OK but sometimes,
    against every prior indication that there won't be a  problem, it
    turns out that there is. Trees are buggers like that.

    I imagine (but don't assume!) that trees are at their most "buggerly"
    when they are well-saturated with rainwater which is sufficiently
    conductive to turn the whole tree into a grounded object, with
    predicable effects on signal strength. Is that the case in practice:
    that periods of poor reception involving trees tend to correspond
    with the after-effects of heavy and prolonged rain?

    Not sure, but it makes sense.

    The trees behind my father's home, in the direction of the Hannington transmitter seem to cause more problems in the Summer when they have
    leaves on them.

    At our last house we had trees in line (of Hannington) too, summer was
    worse. I actually moved the aerial  down, and used the path under the
    tree canopy. That worked fine. It was LOS too, could make out the red
    mast lights at night from the aerial.

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  • From Dickie mint@21:1/5 to wrightsaerials@aol.com on Wed Mar 29 14:35:01 2023
    On 24/03/2023 15:07, wrightsaerials@aol.com wrote:
    On Thursday, 23 March 2023 at 19:06:49 UTC, Dickie mint wrote:
    On 22/03/2023 00:41, wrights...@aol.com wrote:
    Don't assume that an outdoor aerial will work OK if you are behind trees. >>> Bill
    They are some distance away and others in the street have outdoor
    aerials.

    Like I said, 'don't assume'. Most likely it'll be OK but sometimes, against every prior indication that there won't be a problem, it turns out that there is. Trees are buggers like that.

    Bill
    Now here's the weirdest thing! Having monitored the signalstrength &
    quality option on the Humax menu, the SD channels are very good, with
    only a very slight variation. The HD channels are zilch. No signal
    strenth at all.

    Now when I first got the Humax the HD channels were fine. I don't see
    how trees (which are not in leaf yet) can affect only the HD channels.

    I must admit that we mainly use the Freesat Humax, with the Freeview one
    being a reserve, so haven't tracked any change over the months.

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  • From Mark Carver@21:1/5 to Dickie mint on Wed Mar 29 14:54:55 2023
    On 29/03/2023 14:35, Dickie mint wrote:
    On 24/03/2023 15:07, wrightsaerials@aol.com wrote:
    On Thursday, 23 March 2023 at 19:06:49 UTC, Dickie mint wrote:
    On 22/03/2023 00:41, wrights...@aol.com wrote:
    Don't assume that an outdoor aerial will work OK if you are behind
    trees.
    Bill
    They are some distance away and others in the street have outdoor
    aerials.

    Like I said, 'don't assume'. Most likely it'll be OK but sometimes,
    against every prior indication that there won't be a problem, it
    turns out that there is. Trees are buggers like that.

    Bill
    Now here's the weirdest thing!  Having monitored the signalstrength  & quality option on the Humax menu, the SD channels are very good, with
    only a very slight variation.  The HD channels are zilch. No signal
    strenth at all.

    Now when I first got the Humax the HD channels were fine. I don't see
    how trees (which are not in leaf yet) can affect only the HD channels.

    I must admit that we mainly use the Freesat Humax, with the Freeview
    one being a reserve, so haven't tracked any change over the months.
    Are you looking at the right UHF channel for the HD mux (Ch 40 at SC) 
    Are you sure you're not accidentally looking at another transmitter
    instead, for instance The Wrekin on Ch 30 ?

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  • From wrightsaerials@f2s.com@21:1/5 to Brian Gregory on Thu Mar 30 11:14:40 2023
    On Tuesday, 28 March 2023 at 21:20:28 UTC+1, Brian Gregory wrote:
    On 24/03/2023 21:23, NY wrote:
    "wrights...@aol.com" <wrights...@f2s.com> wrote in message news:64457424-7a0e-4b3f...@googlegroups.com...
    On Thursday, 23 March 2023 at 19:06:49 UTC, Dickie mint wrote:
    On 22/03/2023 00:41, wrights...@aol.com wrote:
    Don't assume that an outdoor aerial will work OK if you are behind
    trees.
    Bill
    They are some distance away and others in the street have outdoor
    aerials.

    Like I said, 'don't assume'. Most likely it'll be OK but sometimes,
    against every prior indication that there won't be a problem, it
    turns out that there is. Trees are buggers like that.

    I imagine (but don't assume!) that trees are at their most "buggerly"
    when they are well-saturated with rainwater which is sufficiently conductive to turn the whole tree into a grounded object, with
    predicable effects on signal strength. Is that the case in practice:
    that periods of poor reception involving trees tend to correspond with
    the after-effects of heavy and prolonged rain?
    Not sure, but it makes sense.

    The trees behind my father's home, in the direction of the Hannington transmitter seem to cause more problems in the Summer when they have
    leaves on them.

    --
    Brian Gregory (in England).
    Yes that usually happens. And leaf size is an issue.
    Bill

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  • From wrightsaerials@f2s.com@21:1/5 to Mark Carver on Thu Mar 30 11:16:22 2023
    On Wednesday, 29 March 2023 at 08:03:21 UTC+1, Mark Carver wrote:

    At our last house we had trees in line (of Hannington) too, summer was
    worse. I actually moved the aerial down, and used the path under the
    tree canopy. That worked fine. It was LOS too, could make out the red
    mast lights at night from the aerial.
    I was able to do that when the one tree was in the middle of a large lawn, and the lower branches had been trimmed to allow the sit-on mower to get close to the trunk.
    Bill

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  • From Woody@21:1/5 to wrightsaerials@aol.com on Thu Mar 30 22:12:11 2023
    On Thu 30/03/2023 19:14, wrightsaerials@aol.com wrote:
    On Tuesday, 28 March 2023 at 21:20:28 UTC+1, Brian Gregory wrote:
    On 24/03/2023 21:23, NY wrote:
    "wrights...@aol.com" <wrights...@f2s.com> wrote in message
    news:64457424-7a0e-4b3f...@googlegroups.com...
    On Thursday, 23 March 2023 at 19:06:49 UTC, Dickie mint wrote:
    On 22/03/2023 00:41, wrights...@aol.com wrote:
    Don't assume that an outdoor aerial will work OK if you are behind >>>>>> trees.
    Bill
    They are some distance away and others in the street have outdoor
    aerials.

    Like I said, 'don't assume'. Most likely it'll be OK but sometimes,
    against every prior indication that there won't be a problem, it
    turns out that there is. Trees are buggers like that.

    I imagine (but don't assume!) that trees are at their most "buggerly"
    when they are well-saturated with rainwater which is sufficiently
    conductive to turn the whole tree into a grounded object, with
    predicable effects on signal strength. Is that the case in practice:
    that periods of poor reception involving trees tend to correspond with
    the after-effects of heavy and prolonged rain?
    Not sure, but it makes sense.

    The trees behind my father's home, in the direction of the Hannington
    transmitter seem to cause more problems in the Summer when they have
    leaves on them.

    --
    Brian Gregory (in England).
    Yes that usually happens. And leaf size is an issue.
    Bill


    .....and if its been raining!

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  • From Dickie mint@21:1/5 to All on Sat Apr 1 15:11:06 2023
    On 29/03/2023 14:54, Mark Carver wrote:

    Never seen another transmitter here in sunny Solihull! Definately SC.

    I should add it's both the Humax Freeveiw PVR and LG TV. As I have seen
    the HD channel some while ago I suspect either the aerial amp or, being paranoid, some new kit Brum airport (2 miles away as the crow flies)
    are using!

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