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Vintage Amateur and Military Radio Amateur/military receivers and transmitters, morse, and any other related vintage comms equipment.

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Old 17th Oct 2018, 6:42 pm   #1
Jon_G4MDC
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Default Pye Transport

There are those here that will recognise this title.
Neither Amateur nor Military but somewhere between the two.

It was a network that was very useful in it's day but I find very little on record.
Any contributions?

I won't add anything yet in case this is not the right place.
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Old 17th Oct 2018, 8:50 pm   #2
G6Tanuki
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Default Re: Pye Transport

I'm only familiar with the low/high-band frequencies which in the 70s and 80s Pye had licensed for use on their own operations and demonstrations. At least two of these were AM VHF-airband [Zebra One/Two and Zebra Ground are callsigns that come to mind]
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Old 17th Oct 2018, 8:56 pm   #3
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Default Re: Pye Transport

72.35Mhz mobile TX. 85.85Mhz base TX. Usually set to talkthrough out of office hours. My callsign was "Pye Notts Howe". 1977 to my deliberate "redundancy" in March 1990.
Commonly known as "Transport Scheme".
Rob
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Old 17th Oct 2018, 9:16 pm   #4
Jon_G4MDC
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Default Re: Pye Transport

I didn't know about the airband stuff - very interesting.
Rob has explained a pile of crystals I still have for all sorts of sets.

I think I was Pye Project 56 - Systems Installation Dept from Cambridge.
It could turn out well or not so well when you turned up on far away schemes...
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Old 17th Oct 2018, 10:26 pm   #5
G6Tanuki
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Default Re: Pye Transport

A list of legacy Pye related frequencies are listed here: http://irishradio.tripod.com/ni.htm
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Old 18th Oct 2018, 5:26 pm   #6
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Default Re: Pye Transport

Ah yes - lists like that probably meant trouble once upon a time but not any more I suppose.

It was the 72.35 MHz Mobile TX and 82.85 MHz Base TX that I was talking about here in the main.

There were the demonstration channels too but I think these could be used short term by any of the big companies. (I never knew the exact rules on them? - help!) I know I put a survey transmitter on demo frequencies at Hannington and went off measuring for the day but at some point the Tx went off.

When I came back to site (long drive - good site), to investigate, the TX crystal was left on top of the gear with a note - please don't do this.
I still wonder about that. Who was it?

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Old 18th Oct 2018, 8:54 pm   #7
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Default Re: Pye Transport

Jon. Typo? It is 85.85Mhz.
Low band had splits (mobile TX/Rx) of 13.5Mhz 72/85 ish and 10Mhz 77/87 Mhz ish. Simplex 86Mhz ish.
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Old 19th Oct 2018, 6:17 pm   #8
Jon_G4MDC
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Default Re: Pye Transport

haha Yes Typo!!
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Old 19th Oct 2018, 11:13 pm   #9
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Default Re: Pye Transport

I have got an old GEC set kicking around that keyed up to something in the 80Mhz region.
Never been powered up for 30 years. I did take a photo of it when I was moving my workshop a few years ago.
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Old 23rd Jan 2019, 3:56 pm   #10
TALKINGWITHPYE
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Default Re: Pye Transport

Yes 72.35 and 85.85 were also used here in Northern Ireland when I joined in 1970. I had a boot mount cambridge in my car and enevitably I forgot to switch off one night and next morning resulted in a dead battery, so I fitted a relay to switch off the tx valve heaters when the ignition was turned off. I still use Philips kit on 2 metres in my car, though somewhat more modern, like an fm1100.
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