In article <uidfcf$113jt$1@dont-email.me>, Woody
<harrogate3@ntlworld.com> scribeth thus
>On Tue 07/11/2023 12:29, tony sayer wrote:
>> In article <kqn4dqFlabtU1@mid.individual.net>, Mark Carver
>> <mark@invalid.com> scribeth thus
>>> On 04/11/2023 14:49, tony sayer wrote:
>>>> In article <uh38p4$2erkk$1@dont-email.me>, Brian Gaff
>>>> <brian1gaff@gmail.com> scribeth thus
>>>>> I was wondering that since digital, if the hardware has changed transmitter
>>>>> side? By that I mean what sort of devices are used to generate the powers
>>>>> needed at the Aerial?
>>>>> Many moons ago it was your basic valve technology that they used, but have
>>>>> they by now managed to get something more efficient? After all being
>digital
>>>>> would increase the work done. Old Analogue tvs output was higher on some
>>>>> scenes than others, but multiplexing several channels gets much closer to
>>>>> always changing modulation at high power, one would imagine.
>>>>> Brian
>>>>>
>>>>
>>>> Last time i looked at Sandy heath they were using the Paragon series
>>>> transmitters, these use an Inductive Output Tube (IOT) a sort of mini
>>>> Klystron or klystrode!..
>>>
>>> Comark IOTs at the highest power sites such as Belmont, Caldbeck,
>>> Caradon, CP, Emley Moor PSB's, Rowridge PSB's, Sandy Heath PSB's, Sutton
>>> Coldfield.
>>>
>>> NEC DTU-52 at Beacon Hill, Black Hill, Blaenplwyf, Brougher Mountain,
>>> Caldbeck Scotland, Carmel, Craigkelly, Darvel, Divis, Dover, Eitshal,
>>> Hannington, Oxford, Rowridge COM's, Sandy Heath COM's, Tacolneston &
>>> Winter Hill.
>>>
>>> NEC DTU-10 at Angus, Bluebell Hill, Bressay, Cambret Hill, Chatton,
>>> Fremont Point, Heathfield & Knock More.
>>>
>> I stand updated! Pity we can't or don't make them anymore, used to work
>> at Pye TVT many years ago now but UK manufacturing industry ain't wot we
>> do much of now:(
>>
>> Makes we wonder if our Mark a has gone to work for Arqiva knowing all
>> that???
>
>No Tony, I started it by replying to Brian G and I worked for Arqiva (or
>NTL as it then was) when NTL bought the service dept of Philips RCS (as
>was Pye Telecom before that) in 1999.
>
>I do wonder about Mark sometimes though!
>
>You weren't a Pye (group) trainee in the late 60's/early 70's were you?
>
>
I started work at Pye TvT in Coldhams lane Cambridge in around 1968 or
maybe 9! Worked on UHF 2 and UHF 77 'mitters mainly assembly and wiring
and did a little test work towards the end!

Worked on the last 405 line transmitter for ITV London at Croydon was
told that as i seemed to be the only one here who could read and
understand RF circuit diagrams was told to put indent markers on all the
components in the pen and output stages, nice to be told that by George
Hickson my foreman!

Best afternoon of the week was Friday George and the others would be
down the Rosemary branch and afterwards George would be arguing Irish
politics until manny Shelton the works MD calmed him down a bit!

Was then offered a job running the repair section of a local TV shop
great fun there had to help the aerial rigger one day was up on this
four story house and he had a collapsed lung had to put him over my
shoulder fireman fashion and carry the poor sod to the ground apart from
almost crapping myself there wasn't anyone nearby who had a phone to
call an ambulance. The next bloke was driving out with him one day and
he started shuddering and was having an epileptic attack had to pull the
poxy old vans handbrake and steer it into the verge as were we're going
downhill towards a main road!..

Started a firm dealing in Two way radio but that demised in the time of
the pandemic least wide area did..

These supposed retirement days see me assembling and planning Small
scale DAB transmitters and looking after a few commercial radio station
relays, much less boring than playing Golf:)..

--
Tony Sayer

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

Give him a keyboard, and he will reveal himself.

On Tue 07/11/2023 22:01, tony sayer wrote:
> In article <uidfcf$113jt$1@dont-email.me>, Woody
> <harrogate3@ntlworld.com> scribeth thus
>> On Tue 07/11/2023 12:29, tony sayer wrote:
>>> In article <kqn4dqFlabtU1@mid.individual.net>, Mark Carver
>>> <mark@invalid.com> scribeth thus
>>>> On 04/11/2023 14:49, tony sayer wrote:
>>>>> In article <uh38p4$2erkk$1@dont-email.me>, Brian Gaff
>>>>> <brian1gaff@gmail.com> scribeth thus
>>>>>> I was wondering that since digital, if the hardware has changed transmitter
>>>>>> side? By that I mean what sort of devices are used to generate the powers
>>>>>> needed at the Aerial?
>>>>>> Many moons ago it was your basic valve technology that they used, but have
>>>>>> they by now managed to get something more efficient? After all being
>> digital
>>>>>> would increase the work done. Old Analogue tvs output was higher on some
>>>>>> scenes than others, but multiplexing several channels gets much closer to
>>>>>> always changing modulation at high power, one would imagine.
>>>>>> Brian
>>>>>>
>>>>>
>>>>> Last time i looked at Sandy heath they were using the Paragon series
>>>>> transmitters, these use an Inductive Output Tube (IOT) a sort of mini
>>>>> Klystron or klystrode!..
>>>>
>>>> Comark IOTs at the highest power sites such as Belmont, Caldbeck,
>>>> Caradon, CP, Emley Moor PSB's, Rowridge PSB's, Sandy Heath PSB's, Sutton
>>>> Coldfield.
>>>>
>>>> NEC DTU-52 at Beacon Hill, Black Hill, Blaenplwyf, Brougher Mountain,
>>>> Caldbeck Scotland, Carmel, Craigkelly, Darvel, Divis, Dover, Eitshal,
>>>> Hannington, Oxford, Rowridge COM's, Sandy Heath COM's, Tacolneston &
>>>> Winter Hill.
>>>>
>>>> NEC DTU-10 at Angus, Bluebell Hill, Bressay, Cambret Hill, Chatton,
>>>> Fremont Point, Heathfield & Knock More.
>>>>
>>> I stand updated! Pity we can't or don't make them anymore, used to work
>>> at Pye TVT many years ago now but UK manufacturing industry ain't wot we
>>> do much of now:(
>>>
>>> Makes we wonder if our Mark a has gone to work for Arqiva knowing all
>>> that???
>>
>> No Tony, I started it by replying to Brian G and I worked for Arqiva (or
>> NTL as it then was) when NTL bought the service dept of Philips RCS (as
>> was Pye Telecom before that) in 1999.
>>
>> I do wonder about Mark sometimes though!
>>
>> You weren't a Pye (group) trainee in the late 60's/early 70's were you?
>>
>>
> I started work at Pye TvT in Coldhams lane Cambridge in around 1968 or
> maybe 9! Worked on UHF 2 and UHF 77 'mitters mainly assembly and wiring
> and did a little test work towards the end!
>
> Worked on the last 405 line transmitter for ITV London at Croydon was
> told that as i seemed to be the only one here who could read and
> understand RF circuit diagrams was told to put indent markers on all the
> components in the pen and output stages, nice to be told that by George
> Hickson my foreman!
>
> Best afternoon of the week was Friday George and the others would be
> down the Rosemary branch and afterwards George would be arguing Irish
> politics until manny Shelton the works MD calmed him down a bit!
>
> Was then offered a job running the repair section of a local TV shop
> great fun there had to help the aerial rigger one day was up on this
> four story house and he had a collapsed lung had to put him over my
> shoulder fireman fashion and carry the poor sod to the ground apart from
> almost crapping myself there wasn't anyone nearby who had a phone to
> call an ambulance. The next bloke was driving out with him one day and
> he started shuddering and was having an epileptic attack had to pull the
> poxy old vans handbrake and steer it into the verge as were we're going
> downhill towards a main road!..
>
> Started a firm dealing in Two way radio but that demised in the time of
> the pandemic least wide area did..
>
> These supposed retirement days see me assembling and planning Small
> scale DAB transmitters and looking after a few commercial radio station
> relays, much less boring than playing Golf:)..
>

One of my fellow trainees was a chap called Phil King. Not sure if he
was TVT or Unicam but ISTR he ended up as MD!

>> These supposed retirement days see me assembling and planning Small
>> scale DAB transmitters and looking after a few commercial radio station
>> relays, much less boring than playing Golf:)..
>>
>
>One of my fellow trainees was a chap called Phil King. Not sure if he
>was TVT or Unicam but ISTR he ended up as MD!
>

Don't recall anyone of that name, but then again this was all a long
time ago now!..

Interesting site:)

https://www.pye-story.org/companies/pye-tvt-story/transmitters

--
Tony Sayer

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

Give him a keyboard, and he will reveal himself.