Lindholme Radio Tower

18 Feb 2020 21:19 #31 by kebecker
Replied by kebecker on topic Lindholme Radio Tower
I lived in Watton back in the 60s, but can still remember this tower being in place until at least 1998 ?



This is from Google maps (2008, I think). it was just along the road from Eastern Radar, I know absolutely nothing about this subject, but can recall seeing "similar" masts around east anglia.

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19 Feb 2020 10:06 #32 by mbriscoe
Replied by mbriscoe on topic Lindholme Radio Tower
It is not unknown for the OS to label radio masts and towers as "pylons", though NOSHEB used to use electricity pylons as towers for their radio sites - presumably they had lots of pylons so why buy a special tower for a new site! I think most were replaced as more antenna were put on the towers so higher wind loading required.

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19 Feb 2020 11:34 #33 by canberra
Replied by canberra on topic Lindholme Radio Tower
That picture from Watton looks very similar to a mast we had at Barkston which was for the BOXER system. As the mast at Lindholme was removed when the RAF finally withdrew, Im wondering that as the final RAF user was a signals unit if it may have been a standby to line reciever?

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19 Feb 2020 12:42 #34 by mbriscoe
Replied by mbriscoe on topic Lindholme Radio Tower

That picture from Watton looks very similar to a mast we had at Barkston which was for the BOXER system. As the mast at Lindholme was removed when the RAF finally withdrew, Im wondering that as the final RAF user was a signals unit if it may have been a standby to line reciever?


I think BOXER was maintained by BT, I was told that they were not allowed to use BT sites so there was some resilience* in the network. BT often use those short square towers.

* I was sceptical about the resilience having found our local site running on diesel long after the mains had been restored. Rang Corsham and they had not noticed that the mains had been off and that the diesel did not shutdown. I presume they would have once the fuel was used up and batteries flat! I think that happened a few times.
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19 Feb 2020 17:05 #35 by G4HFG
Replied by G4HFG on topic Lindholme Radio Tower
That is the structure, but minus the two microwave dishes and without the low band folded dipole at the top. We may be getting a bit closer to the answer!, but as I mentioned previously, it could just have been that the Police found a structure to hang their antennas on for a time and it was a coincidence that it was adjacent to Northern Radar and Lindholme.

Off topic but could the microwave dishes on the Watton mast be Bowman?

I have attached a snapshot of Elvington. I was told that they were Bowman, but hey... .. The mast at Elvington was complete with the dishes in 2006, long after the RAF withdrew, probably as a link to the UNITER at Rawcliffe Bridge.

Cheers,
Graham

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19 Feb 2020 17:14 #36 by 698
Replied by 698 on topic Lindholme Radio Tower
Those dishes at Elvington MAY be part of the now decommissioned USAF DEB system.
I did have a jpeg map of the UK link sites somewhere which I will try to find to see if Elvington was one of them.

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19 Feb 2020 19:04 #37 by G4HFG
Replied by G4HFG on topic Lindholme Radio Tower
Thanks.
DEB map attached. It could have changed but USAF is reduced in size in the UK, rather than increased I would have thought. Not been by Elvington for a while. Shame if this mast and the elevated control tower has been taken down.
G

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19 Feb 2020 20:49 #38 by 698
Replied by 698 on topic Lindholme Radio Tower
Your map is much clearer than the one I have/had and mine was also not in colour.
Garrowsby Hill is not far from Elvington and a look back in time on Google Earth show dishes on the mast at Garrowby Hill possibly pointing in the direction of Elvington so it may well be a different system.
The latest GE imagery seems to show the Garrowsby Hill mast devoid of those dishes.
There used to be a similar looking tower on Barkston Heath but I believe it has now gone too.

The Deb system has pretty much gone now as far as I am aware, I think that the only USAF microwave link now in the UK is between Mildenhall and Lakenheath everything else being Fibre Optic according the the internet.

Back to your map briefly and it shows the link from Martlesham to High Garret via, I assume Gt Bromley,
In later years Gt Bromley linked direct to Wethersfield, the masts still being in situ and High Garret was vacated, there is still a mast on the site but I believe it was added later.

Getting back to the original subject: the folded dipoles as already stated do look UHF PMR ish, either used phased as a colinear of for directivity and almost certainly not for ATC use.
I believe that in the days before Airwave, but I could be wrong, that UHF TX/TX were often located locally with the VHF providing county wide comms, often from remote sites, officers being able to repeat from their UHF handhelds via their car to the VHF channels when out of range of the UHF sites.

Also, does anyone know if Northern Radar would have had their TX/RX,s on the radar site or would they have had remote equipment co located with other ATC sites?
One presumes they used both VHF/UHF?

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19 Feb 2020 21:59 #39 by G4HFG
Replied by G4HFG on topic Lindholme Radio Tower
NR appeared to have (in the early days) two masts on site located just behind the ops building (attached)

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19 Feb 2020 22:22 #40 by kebecker
Replied by kebecker on topic Lindholme Radio Tower
ER would appear to have something similar. (2017). flic.kr/p/21TLCM9
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