Old PPI radar at Lossiemouth?

24 Jan 2010 20:36 #11 by SpatialPro
Replied by SpatialPro on topic Old PPI radar at Lossiemouth?

could easily be seen from the B4056 - the hill which leads up to the airfield from Southmead


I used to go past frequently anyway, but memories of driving lessons and the Southmead Test Centre are especially filled with views of Filton and this radar, as were ATC trips (the Cadet kind!)...

It's been a while for me, but I take it you're still local Graham?

Back on topic, still no drawings of a 264 here... :(

Andy

Please Log in or Create an account to join the conversation.

25 Jan 2010 11:31 #12 by carnaby
Replied by carnaby on topic Old PPI radar at Lossiemouth?

... I take it you're still local Graham?

Yes - now live about 1.5 miles south of the airfield. Last summer I heard 'the Arrows' take-off one Sunday afternoon on an airband radio, but there was no sound or sight whatsoever of the ten Hawks. Wind in wrong direction I guess.

Regarding the TV Ch.37, Google stated it's also used by airfield radar, which was why it was originally denied to broadcasters, but allocated to VCR manufacturers :roll:. Yet when 'Channel-5' appeared on the scene it was broadcast on Ch.37 from Mendip - necessitating millions of VCR retunes in the area, and despite interference from radar.

Off topic completely. but the UK TV network was originally planned for an absolute maximum of four channels (at the time there was just BBC1 and it was felt that there would never be even a second channel as there simply wasn't enough material available even for Beeb1). However to cope with 'worst case scenario' we went for four channels - then decades later along came Channel 5. It was a complete disaster necessitating aerial changes to much of the UK, VCR retunes etc. Many people still can't receive it. They should have waited for digital.

Graham

Plan A is always more effective when the problem you are working on understands that Plan B will involve the use of dynamite :twisted:

Please Log in or Create an account to join the conversation.

01 Jun 2010 18:45 #13 by canberra
Replied by canberra on topic Old PPI radar at Lossiemouth?
Now that must be the reason why terrestrial channel 5 coverage is so patchy. At Leuchars we could only view 5 through a snowstorm!

Please Log in or Create an account to join the conversation.

01 Jun 2010 19:33 #14 by carnaby
Replied by carnaby on topic Old PPI radar at Lossiemouth?

At Leuchars we could only view 5 through a snowstorm!

Leuchars is served by the Angus Transmitter. According to its web site, it was one of several main transmitters which couldn't even handle CH5, due to lack of frequecies being available. Those that could handle it did so on low power and usually in a different part of the UHF TV spectrum, demanding that most viewers changed their TV aerial if they wanted to receive it. As I mentioned above - a complete disaster.

The digital switchover has gone the same way in a large number of regions. Some European countries did the whole exercise in a few weeks, rather than years. In some countries you entered your postcode into the digibox / TV ensuring that it tuned the correct transmitter, and not low power ones which it just happened to come across during its auto scan. UK gets it wrong again. :cry:

Wait for our big switchover in 2011, when all the analogues have gone !

Graham

Plan A is always more effective when the problem you are working on understands that Plan B will involve the use of dynamite :twisted:

Please Log in or Create an account to join the conversation.

01 Jun 2010 19:40 #15 by canberra
Replied by canberra on topic Old PPI radar at Lossiemouth?
I thought the big switchover was 2012?? Here in Lancashire we changed over last november.

Please Log in or Create an account to join the conversation.

01 Jun 2010 20:47 #16 by ted angus
Replied by ted angus on topic Old PPI radar at Lossiemouth?
Re Canberra's Ch 5 snowstorm. terrestial TV at Leuchars and here at Balmullo is a nightmare as are some mobile phone services.
We could only see Ch5 through snow before we got Sky. as an aside Under the previous channeling south of the TAY should have been Scottish TV centred on Edin, north of the Tay was Grampian TV centred on Aberdeen with a news sub unit in Dundee.
both at Leuchars & Balmullo we could only get Grampian, whilst many areas in Dundee could only get Scottish. Of course its all change now its all one channel and all our local news is about Aberdeen If it was up to me I would bin the TV I can get important news on the PC. but Mrs A watches the craft on TV as she can rarely make it out.
TED

Please Log in or Create an account to join the conversation.

19 Jun 2010 03:30 #17 by Gordon
Replied by Gordon on topic Old PPI radar at Lossiemouth?
This was one of more than a few Marconi surveillance radars. The first was installed at Heathrow sometime in 1958 and was the low power
version. The first high power S264A went to Wellington New Zealand the following year but had teething troubles caused by very high winds
the site. If anyone wants more about these, just ask.
Gordon - one of the installation team and then a technical trainer on the S264 and S264A.

Please Log in or Create an account to join the conversation.

19 Jun 2010 07:32 #18 by SpatialPro
Replied by SpatialPro on topic Old PPI radar at Lossiemouth?

If anyone wants more about these, just ask


Do you have any plans/drawings/illustrations/dimensions from manuals etc.?

Many thanks

Andy

Please Log in or Create an account to join the conversation.

11 Jan 2021 02:43 - 11 Jan 2021 02:47 #19 by TerryClark
Replied by TerryClark on topic Old PPI radar at Lossiemouth?

Hello Airtrooper,:)

the radar in question was the S264, mainly found on FAA airfields. When I was there (86-88) it was green, probably repainted late 70s early 80s. The thing I recall most about it was having to get to the access hatch, unlock it and climb in between sweeps!!:lol::!:

Pete

There was one at Glasgow Airport (which of course was an ex RNAS) when I was detached there in 1972.(may even have been 2). It was north side close to the disused 'short' runway near where (if I interpret ZoomEarth correctly) the flying club is nowadays.

Please Log in or Create an account to join the conversation.

11 Jan 2021 04:13 - 11 Jan 2021 04:14 #20 by mbriscoe
Replied by mbriscoe on topic Old PPI radar at Lossiemouth?

Does anyone know of any kind of Marconi museum/archive?? I think I may need to find and contact such an organisation if I'm to find the details I'm looking for.


A later reply!

There is a Marconi Heritage Group

www.marconiheritage.org/

Also the Marconi archive is held at the Bodleian (catalogue online) though much is from an earlier period - I am waiting for the file on wireless station on Skye in WWI!

I have a copy of IBA Technical Review on service planning. It was a very complex task, it was not just predicting whether stations could be received. Most sites used rebroadcast of another station so they had to check that they had a usable signal and did not interfere with any other stations. Some combinations of channels were barred because of potential interference from other channels at a site.

There was a government committee / commission / ???? that issued a report. I am sure they did some planning that would have allowed more transmitter sites but some of the commercial broadcasters fought against it so we now have the original Freeview sites and also Freeview Lite sites.

Don't know much about Channel 5 but I think they worked on a tight budget, they never tried to cover the West coast of Scotland even though there would have plenty of free channels.

As equipment improved it was possible to fit in more relays (still analogue days). We got two nice new transmitters courtesy of the Southern Irish who wanted to use some channels. They were locked to GPS which gave better protection from co-channel. General principle is that if someone wants to use a new channel like that then they have to pay all the costs of anyone affected.

I suspect some of the allocation of sites to STV and Grampian was political because Grampian was always the underdog with STV having the lucrative Central Scotland sites

Please Log in or Create an account to join the conversation.

Time to create page: 0.055 seconds
Powered by Kunena Forum

We use cookies to improve our website and your experience when using it. Cookies used for the essential operation of this site have already been set. By continuing to use this site you are agreeing to this. To find out more about the cookies we use and how to delete them, see our privacy policy.

  
EU Cookie Directive Module Information