| Subject: Re: Another camera |
| From: "miso@sushi.com" <miso@sushi.com> |
| Date: 23/02/2010, 03:43 |
| Newsgroups: alt.conspiracy.area51 |
On Feb 22, 5:19 pm, Archangel <have.dough...@gmail.com> wrote:
On Feb 22, 6:28 pm, obviouslydelusional
<obviouslydelusio...@gmail.com> wrote:
On Feb 22, 11:09 am, rv58 <nv89...@yahoo.com> wrote:
On 22 Feb, 16:27, obviouslydelusional <obviouslydelusio...@gmail.com>
wrote:
On Feb 21, 10:02 pm, "m...@sushi.com" <m...@sushi.com> wrote:
It's not my photo. Like I said, I haven't been down that road in a
while. But it looks like a good camera to check out because you can
get close to it. The land is relatively flat around the gate, so they
can't put the camera up high.
I have a original zap checker, going back to when the product was kind
of beta:http://www.zapchecker.com/
It can sense up to 10GHz, but it is not frequency selective. I do have
a HP 5340A which is good to 18GHz, but it's hardly a field instrument,
and probably wouldn't survive off road travel since it is a senior
citizen as far as test equipment goes.
It seems to me if somebody really knew the control of these satellite
LNBs, you could set one up to sense RF in that 5.8GHz range, then feed
the signal to a more conventional frequency counter or even a
scanner. The LNBs have mixers, but the control is complicated.
I was thinking the VHF antenna is for the dude to receive the video on
some sort of handheld device, but I could also see it being used to
turn on the system. Given the location of this camera, maybe someone
could measure the VHF antenna or better yet see if it has a label. I
don't think the yagi is 900MHz. It is way to big. I would bet more on
the VHF federal band, say 170MHz. However, the base has been known to
use non-federal or military frequencies since due to the remoteness,
there is no other entity to interfere. You may recall the sensors were
on 151.5MHz.
Have you see that radome with the W on it?
Sorry, I thought the photo was yours.
I did a rough approximation of the yagi element size. Those older
Cohu housings are mostly around 14" in length. If you use that as a
known length in the image and assume the camera is pointed about 45
degrees off normal from the line of site you can then develop a
scaling for the image. Long story short, the end yagi element comes
out to be around 12.8" tip to tip (lots of tolerance for error, of
course). This would put the operating frequency in the mid-400 MHz
range.
The radome with the W scales to about 14" in diameter. I did note the
W, but my assumption is the setup is cobbled together from different
sources. It doesn't have the look of a well integrated system. Now
if that same setup is spotted elsewhere then I would be inclined to
change that opinion.
A fun fact about wireless video links. The newer ones typically use
IP communication and are MPEG4 video and can easily be encrypted. But
the older analog stuff, which is what this smells like, is very
difficult to encrypt. So theoretically.....- Hide quoted text -
- Show quoted text -
Who is the W tried searching but no luck.Yagi yes maybe 450 or 420.
Do you think they switch on the cam with the data link them back to
sby.
Miso..are you thinking of the rptr that had the large solar...61 but
not that gate more East.Yes gone now.
Hmmmmm...I thought I knew what the "W" was for, but I was wrong. Now
that I look into it, I don't know what it's for. An interesting
mystery. There don't appear to be any current major microwave point-
to-point or backhaul equipment providers that have a logo anything
like it. Perhaps it's from an older company that has since been
acquired?
Yes, I think the yagi is for a circa 450 MHz data link that is used to
turn the cctv and video transmitter on and off. Just my guess, anyway.- Hide quoted text -
- Show quoted text -
The 'W' is on dishes in pics of other cameras (located at Groom Lake
Road) from 2001 over at DLR.
The box on the tripod leg is a solar panel. You guys are the experts,
would it be enough to power the whole unit?
Here's another pic by the same photographer:http://pic20.picturetrail.com/VOL1447/5244554/10627512/381775299.jpg
BTW, I'm not the photographer either.
Is that the same setup? It looks like the yagi and dish are in the
same direction in the first photo, but not in the second photo.
