I went for a walk last night...

timo_w2s

Retired moderator
My Satellite Setup
Vu+ Duo 4K SE
Dr.HD F15
My Location
Maidenhead, UK & Helsinki, Finland
I went for a walk last night over to the Arqiva Chalfont Grove uplink station in Buckinghamshire. It's only about 40 minutes away from my house on foot but it does involve walking down some rather muddy narrow footpaths running through some pretty spooky woods.

It was a very calm, crisp, frosty night. As I walked through the eerily quiet pitch dark woods I could start to hear the distant hum of air conditioners and occasional faint whirring of motors. Along the way I'd occasionally disturb a roosting bird overhead and we'd both get a bit startled. After a couple of hundred metres as I started to enter a clearing I spotted a fox out for his nightly prowl, looking rather puzzled as to what I was doing there so late at night.

Then as I stepped into the opening I looked up and was greeted by a warning sign on the parameter fence, "Danger: Non-ionising Radiation," and a number of large satellite dishes beyond it all lit up against the dark starry sky. It is quite a breath taking sight. Although I've been here before a few times this is the first time I'd done it in the dark from this particular direction so it was still pretty damn impressive. Even non-enthusiasts have been amazed when I've shown them this site. I think part of the reason is because it's so well hidden away in the woods you'd never know it is there unless you go looking for it.

I went to school just 500m away from the site for over 5 years and never knew about the dishes. All I knew was there were some army broadcasting studios based there (there are still a few old SSVC signposts around the village). I even did cross country runs during PE lessons when I was a kid past the woods but never saw the discrete dishes. It was only in my later years after I'd come back from Finland when I started to go for walks on my own that I finally found the dishes and realised how big the site actually was. Of course it has been expanded somewhat since I was younger too.

The bad news is I rather foolishly didn't bring my tripod with me last night so the resulting photos where somewhat burred and grainy and limited to where I could steady the camera for long exposures. I need to go back again sometime and get some decent pictures now that I know I can get some good night shots. Ideally I'd also like to get a bit of moonlight on the dishes and surroundings too but the moon was absent last night.

So I shall be back some calm, moonlit night.

chalfont1.webp
chalfont2.webp
 
I supplied a number of waveguides and feedhorn components for them a few years back. Its also quite something to see them during the daytime.
 
I supplied a number of waveguides and feedhorn components for them a few years back. Its also quite something to see them during the daytime.

Yes, I've got a few from the evening and daytime over the years...
 

Attachments

  • evening.webp
    evening.webp
    40.2 KB · Views: 50
  • day.webp
    day.webp
    179.4 KB · Views: 51
  • danger.webp
    danger.webp
    114.3 KB · Views: 49

Attachments

  • BBC1.webp
    BBC1.webp
    97 KB · Views: 58
  • BBC2.webp
    BBC2.webp
    50.1 KB · Views: 53
I was trying to use dishpointer.com to work out approximately where the two large dishes are looking but it looks like they are aiming somewhere between 108-120°E but surely that's not physically possible? They have cleared a lot of trees in front of the dishes but even so it's still not a clear view to the horizon and the ground is flat near the dishes. The 2nd photo from my first post was taken in the field between the red lines.

cg.webp

They uplink BFBS from here so NSS 12 at 57.0°E would be more reasonable but that's way off according to dishpointer.

cg2.webp
 
Last edited:
I've been reading the Arqiva website and noticed they say Chalfont Grove can cover 66E – 66W of the arc, which makes more sense. I guess Dishpointer is wildly out? Next time I visit I'll take a compass to get a better idea of directions.
 
Even better, I found a list of the dishes in use:

CHA-01 9.3m C SES 6 319.5E
CHA-02 9.3m C Intelsat 10-02 359E
CHA-03 3.7m C Eutelsat 5W A 5W
CHA-04 3.7m DBS Astra 2A 28.2E
CHA-05 4.5m Ku Eutelsat 5W A 5W
CHA-06 5.6m Ku Intelsat 905 335.5E
CHA-07 9.3m C Arabsat 5A 30.5E
CHA-08 16.4m C Intelsat 902 62E
CHA-09 9.3m C SES 4 338E
CHA-10 5.6m Ku Eutelsat 21B 21.5E
CHA-11 13.0m Ku SES 4 338E
CHA-12 9.3m C NSS 703 47W
CHA-13 7.6m DBS Astra 4A 5E
CHA-14 16.4m C NSS 12 57E
CHA-15 7.6m Ku NSS-7 340E
CHA-16 3.7m DBS Unallocated
CHA-17 9.4m Ku NSS 12 57E
CHA-18 3.8m C Yamal 202 49E
CHA-19 3.7m Ku Eutelsat 10 A 10E
CHA-20 6.3m DBS Eutelsat 9 A 9E
CHA-21 7.3m Ku Astra 4A 5E
CHA-22 7.3m C NSS806 47.5W

I think those two 16.4m dishes are the ones in my photo.
 
Fantastic pictures Timo.

Thanks for posting!
 
Back
Top