Re: Dahlgren VA
> That makes sense then. I'd add that I noticed a prefab aggregateNever seen one near Ft. A.P. Hill, is that the part of 301
> hut further down the route in VA on 301 near AP Hill; the AT&T arrow
> markers on both north and southbound sides on 301 seem to be
> decades old but the hut newer. It is a replica of the hut Albert
> had pointed out in Waldorf; at that location older "arrows" exist
> also. Likely both were put in about the time fiber was installed,
> from my recollection. However, whereas the Waldorf hut was
> abandoned (as one would expect if the line were diverted to Waldorf
> AT&T upon turndown of MW), this hut appeared operational.
that goes through the fort? Hope not. I have seen three off 301/2 in
the Caroline Co. along with a maintence facility. Also seen one in
Henrico Co. near Richmond City limits.
The most visible one is near the KOA Campground before Bowling
Green town limits. Almost directly west of the hut (very visible!)
concealed by some trees and accessed from a local road not 301, is a
maintence facility. Piles of route markers (including a CONTEL marker
for some reason) and unmarked mobile generators and hefty grey cinder
block building. Big AT&T silver pad lock on fence among others.
Maintence address is roughly 17355 Gravatt Rd., N. bound 301 hut ID is
The other hut is further south from A.P. Hill/Bowling Green
and located near the intersection of 301/Froglevel Rd. Hut ID FFT13S.
Rough address 16300 Froglevel Rd. It is off the intersection but not
near it if that makes sense (you'd have to look at the roads on a
map). Very visible and very accessable. The third hut, ID FFT14S, is
much closer to the Hanover Co. line and is very difficult to see from
301/2. FFT17S is in Henrico Co. I could not tell if these huts where
active as none seemed to have power meters, although some did have
little green transformer boxes near by making humming sounds.
Speaking of route location there is a similar hut near the
access road to the Buckingham Troposcatter site. I presume its an
extension of the Dillwyn microwave tower/pop with an ID of DFT1S.
- From what I recall, it was on the part that goes through Ft. A.P. Hill,
closer to the northern boundary I believe. It is off the road, in the
trees, with a small access driveway. On both north and soutbound, there are
plastic - about 8 feet tall - poles with a metal arrow on top pointing in
the direction of the hut, on the southbound side.
I had not noticed the other sites, but then again I wasn't actively
searching. I know just the areas you are referring to, so next time I am
down that way I'll need to take a look.
> Never seen one near Ft. A.P. Hill, is that the part of 301_________________________________________________________________
>that goes through the fort? Hope not. I have seen three off 301/2 in
>the Caroline Co. along with a maintence facility. Also seen one in
>Henrico Co. near Richmond City limits.
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I was recently in this area looking for what thought would be the
location of a Level 3 ILA (optical amplifier). I did not find it but
I do have some observations that I figured would be worth adding to
this discussion in the archives.
--- In firstname.lastname@example.org, "Rick C." <rickchem@h...> wrote:
> The discussion of a fiber spur on the Wash-Balt-Philly line to the
> NSA/BWI jogged my mind on something I noticed at Dahlgren.
> Though "older" maps show only MW links to the NSWC, Naval Space
I never noticed this before but apon inspection of the Oak Grove
microwave site there is a permanent mount for a microwave drum that
could be aimed towards NWSC.
> Command center located there, I recently noticed two newer (large
> plastic as opposed to wooden pole) AT&T route markers just a few
> feet from the side of US 301, which runs adjacent to the base
> perimeter, just as one makes landfall from the Potomac river bridge
Correct, but there are three plastic markers and a fourth
facility/ROW arrow style marker in sad shape. The main cable makes
landfall at the beach, runs to the parking lot of the "park" and then
the spur veers off towards the base (like a very tiny L). There are
no markers on the opposite side of Rt. 301 other than the much older,
tall orange plastic facility/ROW marker (the metal arrow part now
hangs loose and upside down).
However the poster might have missed a key to the puzzle. There is a
medium sized optical amplifier facility next to the parking lot.
Interestingly one third of the structure is made from an existing
repeater hut that has been incorporated into the expansion. The
facility is also one of the few I have seen to have a fixed generator
> into Va. The "main" AT&T RoW lies a few hundred feet from the road
> and is visible from that location, with its own markers - so either
> a spur likely goes to the base or there is a few hundred foot spur
> to the road. I did not observe any markers through the base fence,
> however. Surprisingly, there is a large amount of fiber in that
> specific area - at least three distinct entities, as judged by the
> different markers - AT&T and two others. The other two possibly
> terminate in
This is correct. The original fiber/main run is marked using pressure
treated wooden poles (big, thick monsters) with numerous markings and
warnings. The stuff heading towards NWSC is a spur off of the main
route, the main route does not bow into the base and back out. The
spur markers are not marked.
The other two are Level 3 Communications and CONTEL (GTE now Verizon).
Only the AT&T cable spurs off. CONTEL ends at that point (I suspect
since the other side of the Potomac River is all C&P/Bell) and Level
3 powers on towards DC. I suspect AT&T continues to the Waldorf
> the same area, near the waters edge - I saw no corresponding
> markers on the Maryland side. I recall some time ago the posting
At the beach a couple of feet in front of the amplifier facility
mentioned earlier, is a large billboard with an AT&T death star logo
warning boaters of a cable crossing. A similar sign is on the
Maryland side. These signs are in much better condition and much more
specifically marked than corresponding signs at the cable crossing
between Perryville and Havre De Grace in Maryland.
> that a few decades ago, the ratio of commercial/government lines to
> private lines in that county were the highest in the nation. For
> whatever reason that was, perhaps the need for many lines still
This explains the massive size of the Dahlgren central office. It
seems to be composed of a smaller cinderblock office that was greatly
expanded in size in the 1960s (tasteful expansion).
Parris B. Wood