On Sun, 31 Jan 2021 01:34:41 +0000, The Natural Philosopher
wrote:

On 30/01/2021 17:07, Custos Custodum wrote:
On Sat, 30 Jan 2021 05:02:45 +0000, The Natural Philosopher
wrote:

Those who want slavery should have the grace to name it by its proper
name. They must face the full meaning of that which they are advocating
or condoning; the full, exact, specific meaning of collectivism, of its
logical implications, of the principles upon which it is based, and of
the ultimate consequences to which these principles will lead. They must
face it, then decide whether this is what they want or not.

Ayn Rand.

How ironic, then, that this libertarian icon should spend her last
days a dependant of "social security" and "socialized medicine". You
couldn't make it up.

But you apparently, can...
if you cant attack the message, always attack the messenger;

Especially when she displayed staggering hypocrisy.

On 30/01/2021 11:58, Paul wrote:
And these are not conventional wide-band UHF, three
of them look to be cut at a specific frequency. The
fourth has some slight log-spacing to it. Dipoles are all
the same length.

I've told you, they are standard contract-quality cheapo TV aerials, Gp
A and Gp C/D. I'd guess that the local Tx was Gp A then Channel Five
started on 67 or 68.

Bill

On 30/01/2021 12:34, Harry Bloomfield wrote:
Paul was thinking very hard :
It's around (4) log periodic or Yagi antennas
pointed on a common vector.

They look as if they are probably fringe area TV yagi,

******** they're cheapy ten elements. The cheapest and nastiest lowest
gain aerials there are.


all vertically
polarised - probably feeding individual TV's, though less likely they
might be set up as one antenna system, to try boost reception.

It's probably because the local tx was Gp A the Channel Five started on
67 or 68.

To reiterate my earlier comments:

The thing at the top could be a glass fibre colinear* for anything VHF
or UHF, including RSL VHF FM radio. Or it could be an old Aerialite AM
aerial (they had a coax feeder). Or anything really!

The mast and chimney brackets are very old. The corner plates have
almost rusted away. It looks as if an old mast and bracket pair has been
re-purposed, and lowered.

The two contract-quality UHF TV aerials are of different historic
channel groups; a Gp A and a Gp CD. The two TV aerial on the opposite
corner are the same, except that the top one has been replaced because
the boom on the top one snapped due to the U bolt hole being oversized.

If this is a shared chimney, the other corner belonging to the same
house as the tall aerial has what looks like a vertical dipole for
something or other, could be VHF FM but it looks a bit too long. There's
another aerial of some sort on the same fixing. These are much newer
than the tall mast (look at the corner plate nearest the camera).

*colinear: several dipoles in a stack, inside a shroud of some sort.
Gives a bit more gain than a single halfwave dipole.

Bill

On 29/01/2021 18:40, Jeff Layman wrote:
On 29/01/2021 18:11, S wrote:
On 29/01/2021 17:54, Jeff Layman wrote:
On 29/01/2021 16:54, R D S wrote:
https://drive.google.com/file/d/1Mdm...ew?usp=sharing



Dunno, but it looks like it would make a pretty good lightning
conductor.


a FM quarter wave end fed metal rod? Would be about 765 mm long....

? That aerial extends vertically perhaps 4 or 5 metres above the
chimney. I would be surprised if it isn't one of the highest points in
the street.

Which does suggest a CB aerial like:

https://www.thunderpole.co.uk/base-c...-5-8-wave.html

Which claims to be 5.64m or 12ft in length

In article ,
R D S wrote:
https://drive.google.com/file/d/1Mdm...ew?usp=sharing


Difficult to tell how long. I have a vertical whip aerial for AM. Balanced
downlead. Works extremely well.

--
*Why is a boxing ring square?

Dave Plowman London SW
To e-mail, change noise into sound.

williamwright wrote:
On 30/01/2021 11:58, Paul wrote:
And these are not conventional wide-band UHF, three
of them look to be cut at a specific frequency. The
fourth has some slight log-spacing to it. Dipoles are all
the same length.

I've told you, they are standard contract-quality cheapo TV aerials, Gp
A and Gp C/D. I'd guess that the local Tx was Gp A then Channel Five
started on 67 or 68.

Bill

He wanted a visual description. I tried to give one.

Paul

On 31/01/2021 12:32, Custos Custodum wrote:
On Sun, 31 Jan 2021 01:34:41 +0000, The Natural Philosopher
wrote:

On 30/01/2021 17:07, Custos Custodum wrote:
On Sat, 30 Jan 2021 05:02:45 +0000, The Natural Philosopher
wrote:

Those who want slavery should have the grace to name it by its proper
name. They must face the full meaning of that which they are advocating
or condoning; the full, exact, specific meaning of collectivism, of its
logical implications, of the principles upon which it is based, and of
the ultimate consequences to which these principles will lead. They must
face it, then decide whether this is what they want or not.

Ayn Rand.

How ironic, then, that this libertarian icon should spend her last
days a dependant of "social security" and "socialized medicine". You
couldn't make it up.

But you apparently, can...
if you cant attack the message, always attack the messenger;

Especially when she displayed staggering hypocrisy.

she didn't. keep on lying and attacking


--
The theory of Communism may be summed up in one sentence: Abolish all
private property.

Karl Marx

On 31/01/2021 14:41, Paul wrote:
williamwright wrote:
On 30/01/2021 11:58, Paul wrote:
And these are not conventional wide-band UHF, three
of them look to be cut at a specific frequency. The
fourth has some slight log-spacing to it. Dipoles are all
the same length.

I've told you, they are standard contract-quality cheapo TV aerials,
Gp A and Gp C/D. I'd guess that the local Tx was Gp A then Channel
Five started on 67 or 68.

Bill

He wanted a visual description. I tried to give one.

Â*Â* Paul

Given that Brian knows lots about aerials, you by your ignorance could
only have confused him.

Bill