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  • BAND 3 REORGANISATION FOR TV

    From MB@21:1/5 to All on Sat Oct 23 13:15:38 2021
    From a site about mobile, police etc radio.



    BAND 3 REORGANISATION FOR TV

    https://radiohistory.uk/BAND3TV.htm

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  • From williamwright@21:1/5 to All on Sat Oct 23 13:47:38 2021
    On 23/10/2021 13:15, MB wrote:
    From a site about mobile, police etc radio.



    BAND 3 REORGANISATION FOR TV

    https://radiohistory.uk/BAND3TV.htm


    I didn't realise BIII was in use in the early 50s.

    Bill

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  • From MB@21:1/5 to williamwright on Sat Oct 23 16:53:42 2021
    On 23/10/2021 13:47, williamwright wrote:
    I didn't realise BIII was in use in the early 50s.
    I don't know anything about that period and can't find any references.

    I wonder if some wartime equipment was adapted for use around that band?

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  • From tony sayer@21:1/5 to All on Sat Oct 23 23:06:25 2021
    In article <sl1b48$6cr$1@dont-email.me>, MB <MB@nospam.net> scribeth
    thus
    On 23/10/2021 13:47, williamwright wrote:
    I didn't realise BIII was in use in the early 50s.
    I don't know anything about that period and can't find any references.

    I wonder if some wartime equipment was adapted for use around that band?



    Me neither and I don't think that Pye telecom, Storno, Marconi had
    anything up there in those days!....
    --
    Tony Sayer


    Man is least himself when he talks in his own person.

    Give him a keyboard, and he will reveal himself.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Brian Gaff (Sofa)@21:1/5 to williamwright on Sun Oct 24 09:59:12 2021
    There were some AM transmissions up there as I recall, My dad had a 1 valve superegenitive receiver for the frequencies when I was still very young,
    about 4.
    It sticks in my mind as he told me it interfered with other sets if you
    were not careful.


    Brian

    --

    This newsgroup posting comes to you directly from...
    The Sofa of Brian Gaff...
    briang1@blueyonder.co.uk
    Blind user, so no pictures please
    Note this Signature is meaningless.!
    "williamwright" <wrightsaerials@f2s.com> wrote in message news:itiejaFsiq6U1@mid.individual.net...
    On 23/10/2021 13:15, MB wrote:
    From a site about mobile, police etc radio.



    BAND 3 REORGANISATION FOR TV

    https://radiohistory.uk/BAND3TV.htm


    I didn't realise BIII was in use in the early 50s.

    Bill

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Brian Gaff (Sofa)@21:1/5 to tony sayer on Sun Oct 24 10:00:51 2021
    Are you sure, I understood Pye made most of that stuff back then. MOD and
    some police amongst others.
    Brian

    --

    This newsgroup posting comes to you directly from...
    The Sofa of Brian Gaff...
    briang1@blueyonder.co.uk
    Blind user, so no pictures please
    Note this Signature is meaningless.!
    "tony sayer" <tony@bancom.co.uk> wrote in message news:LlLh3lOhdIdhFw1s@bancom.co.uk...
    In article <sl1b48$6cr$1@dont-email.me>, MB <MB@nospam.net> scribeth
    thus
    On 23/10/2021 13:47, williamwright wrote:
    I didn't realise BIII was in use in the early 50s.
    I don't know anything about that period and can't find any references.

    I wonder if some wartime equipment was adapted for use around that band?



    Me neither and I don't think that Pye telecom, Storno, Marconi had
    anything up there in those days!....
    --
    Tony Sayer


    Man is least himself when he talks in his own person.

    Give him a keyboard, and he will reveal himself.



    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From MB@21:1/5 to All on Sun Oct 24 11:11:45 2021
    On 24/10/2021 10:00, Brian Gaff (Sofa) wrote:
    Are you sure, I understood Pye made most of that stuff back then. MOD and some police amongst others.

    I looked in my copy of Pannell but it is 1979 and frequency bands
    similar to now, up to A Band 148-174 MHz.




    There were quite a lot of smaller companies making radio equipment.

    Hudson from 1955

    https://www.qsl.net/gm8aob/pages_2/hed102c.htm#AM108

    This is 1960

    https://www.qsl.net/gm8aob/pages_2/wt2.htm#WT2

    1962

    https://www.qsl.net/gm8aob/pages_2/COSSOR%20CC15A%20BOOT%20MOUNT%20HB%20AM%20TX%20RX%20circa%201962.htm#COSSOR_CC15A_BOOT_MOUNT_HB_AM_TX_RX_circa_1962



    I had a look on the DTELS forum but could not see any historical
    information back that far back, perhaps someone can ask there if they
    really want ti know.

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  • From Liz Tuddenham@21:1/5 to tony sayer on Sun Oct 24 13:53:44 2021
    tony sayer <tony@bancom.co.uk> wrote:

    In article <sl1b48$6cr$1@dont-email.me>, MB <MB@nospam.net> scribeth
    thus
    On 23/10/2021 13:47, williamwright wrote:
    I didn't realise BIII was in use in the early 50s.
    I don't know anything about that period and can't find any references.

    I wonder if some wartime equipment was adapted for use around that band?



    Me neither and I don't think that Pye telecom, Storno, Marconi had
    anything up there in those days!....

    Eddystone were producing a tuneable UHF receiver (770U) by 1955, in
    response to a government notification (in 1953) that a surveillance
    receiver was needed for the Korean War. Something else must have been
    using those bands too, because the production ran to 2,250 sets.

    --
    ~ Liz Tuddenham ~
    (Remove the ".invalid"s and add ".co.uk" to reply)
    www.poppyrecords.co.uk

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  • From MB@21:1/5 to Liz Tuddenham on Sun Oct 24 15:02:45 2021
    On 24/10/2021 13:53, Liz Tuddenham wrote:
    Eddystone were producing a tuneable UHF receiver (770U) by 1955, in
    response to a government notification (in 1953) that a surveillance
    receiver was needed for the Korean War. Something else must have been
    using those bands too, because the production ran to 2,250 sets.

    The various Eddystone models are shown here.

    https://eddystoneusergroup.org.uk/qrg-the-ultimate-quick-reference-guide/

    The S-Phone operated on UHF and were sent to the Far East so possible
    they were being used or something based on them.

    I was reading last week in "Mission France" that when SOE went around
    France at the end of WWII, a lot of radio equipment was returned often
    in excellent working condition.

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  • From J. P. Gilliver (John)@21:1/5 to briang1@blueyonder.co.uk on Sun Oct 24 19:12:24 2021
    On Sun, 24 Oct 2021 at 09:59:12, "Brian Gaff (Sofa)"
    <briang1@blueyonder.co.uk> wrote (my responses usually follow points
    raised):
    There were some AM transmissions up there as I recall, My dad had a 1 valve >superegenitive receiver for the frequencies when I was still very young, >about 4.
    It sticks in my mind as he told me it interfered with other sets if you
    were not careful.

    Super-regen sets worked like that: as near to going into oscillation as
    they could be, and could easily do so, acting as a transmitter.

    Brian

    John
    --
    J. P. Gilliver. UMRA: 1960/<1985 MB++G()AL-IS-Ch++(p)Ar@T+H+Sh0!:`)DNAf

    (please reply to group - they also serve who only look and lurk)
    (William Allen, 1999 - after Milton, of course)

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  • From Liz Tuddenham@21:1/5 to G6JPG@255soft.uk on Sun Oct 24 22:46:44 2021
    J. P. Gilliver (John) <G6JPG@255soft.uk> wrote:

    On Sun, 24 Oct 2021 at 09:59:12, "Brian Gaff (Sofa)" <briang1@blueyonder.co.uk> wrote (my responses usually follow points
    raised):
    There were some AM transmissions up there as I recall, My dad had a 1 valve >superegenitive receiver for the frequencies when I was still very young, >about 4.
    It sticks in my mind as he told me it interfered with other sets if you
    were not careful.

    Super-regen sets worked like that: as near to going into oscillation as
    they could be, and could easily do so, acting as a transmitter.

    Many designs had an RF stage; not for the extra gain. but to keep the oscillations out of the aerial circuits.


    --
    ~ Liz Tuddenham ~
    (Remove the ".invalid"s and add ".co.uk" to reply)
    www.poppyrecords.co.uk

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From J. P. Gilliver (John)@21:1/5 to liz@poppyrecords.invalid.invalid on Sun Oct 24 23:31:51 2021
    On Sun, 24 Oct 2021 at 22:46:44, Liz Tuddenham <liz@poppyrecords.invalid.invalid> wrote (my responses usually follow
    points raised):
    J. P. Gilliver (John) <G6JPG@255soft.uk> wrote:

    On Sun, 24 Oct 2021 at 09:59:12, "Brian Gaff (Sofa)"
    <briang1@blueyonder.co.uk> wrote (my responses usually follow points
    raised):
    There were some AM transmissions up there as I recall, My dad had a 1 valve >> >superegenitive receiver for the frequencies when I was still very young,
    about 4.
    It sticks in my mind as he told me it interfered with other sets if you >> >were not careful.

    Super-regen sets worked like that: as near to going into oscillation as
    they could be, and could easily do so, acting as a transmitter.

    Many designs had an RF stage; not for the extra gain. but to keep the >oscillations out of the aerial circuits.

    My one-FET one didn't (Denco plug-in coils!), and I suspect Brian's
    dad's 1-valve one didn't either (-:

    --
    J. P. Gilliver. UMRA: 1960/<1985 MB++G()AL-IS-Ch++(p)Ar@T+H+Sh0!:`)DNAf

    Every kid starts out as a natural-born scientist, and then we beat it out of them. A few trickle through the system with their wonder and enthusiasm for science intact. - Carl Sagan (interview w. Psychology Today published '96-1-1)

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  • From Max Demian@21:1/5 to All on Mon Oct 25 12:05:30 2021
    On 24/10/2021 19:12, J. P. Gilliver (John) wrote:
    On Sun, 24 Oct 2021 at 09:59:12, "Brian Gaff (Sofa)" <briang1@blueyonder.co.uk> wrote (my responses usually follow points
    raised):

    There were some AM transmissions up there as I recall, My dad had a 1
    valve
    superegenitive receiver for the frequencies when I was still very young,
    about 4.
    It sticks in my mind as he told me it interfered with  other sets if you
    were not careful.

    Super-regen sets worked like that: as near to going into oscillation as
    they could be, and could easily do so, acting as a transmitter.

    My parents said that in the 30s you could tell that the neighbours were
    tuning their radios in by the squealing interference.

    --
    Max Demian

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  • From Roderick Stewart@21:1/5 to max_demian@bigfoot.com on Tue Oct 26 10:01:35 2021
    On Mon, 25 Oct 2021 12:05:30 +0100, Max Demian
    <max_demian@bigfoot.com> wrote:

    On 24/10/2021 19:12, J. P. Gilliver (John) wrote:
    On Sun, 24 Oct 2021 at 09:59:12, "Brian Gaff (Sofa)"
    <briang1@blueyonder.co.uk> wrote (my responses usually follow points
    raised):

    There were some AM transmissions up there as I recall, My dad had a 1
    valve
    superegenitive receiver for the frequencies when I was still very young, >>> about 4.
    It sticks in my mind as he told me it interfered with  other sets if you >>> were not careful.

    Super-regen sets worked like that: as near to going into oscillation as
    they could be, and could easily do so, acting as a transmitter.

    My parents said that in the 30s you could tell that the neighbours were >tuning their radios in by the squealing interference.

    You could. Even a TRF set with "reaction" (i.e. RF positive feedback)
    could burst into oscillation if the user turned it up too far,
    resulting in an audible beat signal or heterodyne between the signal
    you're trying to listen to and the signal your neighbour is carelessly transmitting by allowing his receiver to oscillate. (I wasn't alive in
    the 1930s, but a lot of radio kits on sale as late as the 1960s were
    still very simple TRF circuits with reaction controls, so perhaps I
    was sometimes a bit of a nuisance to my neighbours).

    I understand this is the origin of the word "superhet", which is short
    for "supersonic heterodyne". In the early days of radio, most people
    would be very familiar with heterodynes, for the reason described
    above, so it was a reasonable name for a superior system that actually
    used one, but at such a high frequency you couldn't hear it.
    "Supersonic" used to mean what we now undestand by "ultrasonic", and
    refered to frequency, not speed.

    Rod.

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  • From Rink@21:1/5 to All on Sun Nov 14 17:37:13 2021
    Op 23-10-2021 om 14:47 schreef williamwright:
    On 23/10/2021 13:15, MB wrote:
     From a site about mobile, police etc radio.



    BAND 3 REORGANISATION FOR TV

    https://radiohistory.uk/BAND3TV.htm


    I didn't realise BIII was in use in the early 50s.

    Bill


    1949 in France, see page 81:

    <https://worldradiohistory.com/Archive-Guide-to-Broadcasting/Guide-to-Broadcasting-5.pdf>


    1951 in France, see page 85 and 86:

    <https://worldradiohistory.com/Archive-Guide-to-Broadcasting/Guide-to-Broadcasting-6.pdf>


    1953 in Belgium, France, West-Germany, Italy, Sweden, see page 95 and 96:

    <https://worldradiohistory.com/Archive-Guide-to-Broadcasting/Guide-to-Broadcasting-7.pdf>


    1956 in a lot of countries, including UK, see page 77, 78, 79 and 80:

    <https://worldradiohistory.com/Archive-Guide-to-Broadcasting/Guide-to-Broadcasting-1956-57.pdf>


    Rink

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