Just Sharing This Another Functional 625 Aerial

[Channel Hopper]

Just like buses, another one pops up when you least expect it. In a loft not far from here, providing very good reception of all BandV signals from Crystal Palace.

It also came with a couple of tobacco tins attached containing homebrew amplifiers for distributing stuff around the house. All appear to be in perfect order.

Any ideas

 

[Channel Hopper]

The other hardware in the loft.

 

[aceb]

A skeleton slot, I've never seen one for UHF TV before and I'm sure Bill Wright would appreciate copies of the photos. That filtered amp is something, relatively modern with those dates although the component drawer must have been around for a few years prior to construction! I wonder what required filtering around 1991?

 

[Channel Hopper]

Apparently J-Beam/Jaybeam antennas had a manufacturing plant for them up to the mid 80's, they made two designs, 2m and 70cm, the one pictured is probably filtered to pick up only stuff above 470MHz, athough I am guessing.

 

[Channel Hopper]

The "Skeleton Slot" antenna was conceived and developed by Bill Sykes,
G2HCG, in the late 1940s. He obtained a patent and the design became the
basis of his company, Jaybeam Limited. The original Skeleton Slot was a 2m
antenna. It was basically a vertical Loop Antenna that was fed, with a
balanced feed, on opposite sides; hence the polarisation was horizontal.
The loop was not circular, nor was it square. It was "stretched" vertically
into a rectangle. He then added a horizontal Director and a Reflector
element in the plane of the top and bottom sections; hence he had a pair of
3-element beams. But the driven elements were not "full length" dipoles.
They were just the centre section of equivalent dipoles (where the current
is maximum, which is what you want). Later 2 more Directors were added at
each level making it a pair of 5-element Yagis stacked one above the other
and having the common slot driven element. The D5-2M, as it was known, led
to the D8-2M by adding 3 more directors to each Yagi. This was a very
popular antenna in England and in Europe. The D8-2M was also imported and
sold for several years in America.

and

The 70cm version was called the '8 over 8'


http://nm9j.com/pcara/docs/pcud0716.pdf ( page 13 )

 

[aceb]

It was, I used both 2m and 70cm versions back in the 80s when we were hilltopping but those element ends and the T brackets don't look like Jaybeam to me.