Digital TV - DIY articles

"Steve Firth" wrote in message
. ..
Bill Wright wrote:

I suppose that depends on what he means by fairly recent and in what
field he is talking about. Assuming he is talking about them being a
fairly recent development for domestic television reception would
anyone take issue with him?

Yes I would. See this aerial, installed 35 years ago.

Log aperiodic aerials were common even back in the days of 405 line TV.
Maybe those in towns and cities never saw them, but out in outlying
areas it was common to see some military sized monsters in farmyards.

There were Band III logs in use in the UK, and they are still used in
Ireland. see

http://www.wrightsaerials.tv/aerialp...ingus/005.html


Bill

Bill Wright wrote:


There were Band III logs in use in the UK, and they are still used in
Ireland. see

http://www.wrightsaerials.tv/aerialp...ingus/005.html

Yes they look similar to the one that my father specified for the house
- except IIRC ours was horizontally polarised.

In article , Graham.
scribeth thus


Justin has a good website but he seems to think logs are new.
"The Log Periodic is a fairly recent development"
http://www.aerialsandtv.com/aerials.html

I suppose that depends on what he means by fairly recent and in what
field he is talking about. Assuming he is talking about them being a
fairly recent development for domestic television reception would
anyone take issue with him?

Yes I would. See this aerial, installed 35 years ago.

I can't see it, must be too far away :-)

From my point of view, as a long time observer of aerials
rather than a rigger, LPs were commonly seen in the 70s
and early 80s along with various "grid " type arrays as a means
of combating ghosting.
Then they went out of fashion for some reason, now they are
making a comeback and are even promoted as the aerial
of choice for normal good reception situations, which was
never previously the case.
Just to clarify I am talking about UHF TV reception here.


They are used for FM Band 2 broadcasting and reception..

Mainly for making stocking and supply easy like UHF TV.....


--
Tony Sayer

In article , Steve Firth
scribeth thus
Bill Wright wrote:

I suppose that depends on what he means by fairly recent and in what
field he is talking about. Assuming he is talking about them being a
fairly recent development for domestic television reception would
anyone take issue with him?

Yes I would. See this aerial, installed 35 years ago.

Log aperiodic aerials were common even back in the days of 405 line TV.
Maybe those in towns and cities never saw them, but out in outlying
areas it was common to see some military sized monsters in farmyards.

Never saw one round these parts;!...
--
Tony Sayer

In message , tony sayer
writes
In article , Steve Firth
scribeth thus
Bill Wright wrote:

I suppose that depends on what he means by fairly recent and in what
field he is talking about. Assuming he is talking about them being a
fairly recent development for domestic television reception would
anyone take issue with him?

Yes I would. See this aerial, installed 35 years ago.

Log aperiodic aerials were common even back in the days of 405 line TV.
Maybe those in towns and cities never saw them, but out in outlying
areas it was common to see some military sized monsters in farmyards.

Never saw one round these parts;!...

Same here (certainly not in the UK). Unless you had a pressing need to
receive several channels on the one aerial, I would have thought that a
log periodic aerial would have been the last thing you would use 'in
outlying areas'. I never saw one.

Maybe the circumstances in Ireland were different, especially if you
were trying to pick up the UK transmissions. I can imagine situations
where you might have the choice of several UK channels from the same
general direction. Although reception might be a bit 'hitty-missy', a
relatively low-gain LP might be a better choice than a single-channel
aerial.
--
Ian

In message , "Dave Plowman (News)"
writes
In article ,
David Hansen wrote:
On Wed, 4 Mar 2009 22:46:43 -0000 someone who may be "Graham."
wrote this:-

Justin has a good website but he seems to think logs are new.
"The Log Periodic is a fairly recent development"
http://www.aerialsandtv.com/aerials.html

I suppose that depends on what he means by fairly recent and in what
field he is talking about. Assuming he is talking about them being a
fairly recent development for domestic television reception would
anyone take issue with him?

They were around for domestic use when UHF broadcasting started in the UK.
Although rarely used due to cost.
I used one for my first colour TV - just after BBC1 and ITV went colour.

When I first saw UHF aerials (on a visit to London in 1961) they were
nearly all of the 'double loop in front of a reflecting screen' type.
Was the 'double loop' a fancy way to make a broadband folded dipole, or
was each of the loops one half of a 'normal' dipole?
--
Ian

Ian Jackson wrote:

When I first saw UHF aerials (on a visit to London in 1961)

Three years before Crystal Palace started any public UHF transmissions ?

they were
nearly all of the 'double loop in front of a reflecting screen' type.
Was the 'double loop' a fancy way to make a broadband folded dipole, or
was each of the loops one half of a 'normal' dipole?

These ? :-

http://www.wrightsaerials.tv/aerialp.../063.html#img2

There used to be a few to be seen in Chichester, W Sussex too.


--
Mark
Please replace invalid and invalid with gmx and net to reply.

www.paras.org.uk

In article , Ian Jackson ianREMOVET
scribeth thus
In message , "Dave Plowman (News)"
writes
In article ,
David Hansen wrote:
On Wed, 4 Mar 2009 22:46:43 -0000 someone who may be "Graham."
wrote this:-

Justin has a good website but he seems to think logs are new.
"The Log Periodic is a fairly recent development"
http://www.aerialsandtv.com/aerials.html

I suppose that depends on what he means by fairly recent and in what
field he is talking about. Assuming he is talking about them being a
fairly recent development for domestic television reception would
anyone take issue with him?

They were around for domestic use when UHF broadcasting started in the UK.
Although rarely used due to cost.
I used one for my first colour TV - just after BBC1 and ITV went colour.

When I first saw UHF aerials (on a visit to London in 1961) they were
nearly all of the 'double loop in front of a reflecting screen' type.
Was the 'double loop' a fancy way to make a broadband folded dipole, or
was each of the loops one half of a 'normal' dipole?

My auntie had one with what looked like two V shapes sprouting from the
connection box, worked very well in Sloane Square on the roof of a six
story building You could get up there via a roof hatch!..

Nice views!..
--
Tony Sayer

In message , Mark Carver
writes
Ian Jackson wrote:

When I first saw UHF aerials (on a visit to London in 1961)

Three years before Crystal Palace started any public UHF transmissions ?

they were nearly all of the 'double loop in front of a reflecting
screen' type. Was the 'double loop' a fancy way to make a broadband
folded dipole, or was each of the loops one half of a 'normal' dipole?

These ? :-

http://www.wrightsaerials.tv/aerialp.../063.html#img2

There used to be a few to be seen in Chichester, W Sussex too.

Yes. That's the type. Now I've seen a photograph of one, I see that it's
(probably) a double 'quad'. That aerial is, in fact, horizontally
polarised.
--
Ian

"tony sayer" wrote in message
...
In article , Graham.
scribeth thus


Justin has a good website but he seems to think logs are new.
"The Log Periodic is a fairly recent development"
http://www.aerialsandtv.com/aerials.html

I suppose that depends on what he means by fairly recent and in what
field he is talking about. Assuming he is talking about them being a
fairly recent development for domestic television reception would
anyone take issue with him?

Yes I would. See this aerial, installed 35 years ago.

I can't see it, must be too far away :-)

From my point of view, as a long time observer of aerials
rather than a rigger, LPs were commonly seen in the 70s
and early 80s along with various "grid " type arrays as a means
of combating ghosting.
Then they went out of fashion for some reason, now they are
making a comeback and are even promoted as the aerial
of choice for normal good reception situations, which was
never previously the case.
Just to clarify I am talking about UHF TV reception here.


They are used for FM Band 2 broadcasting and reception..

Mainly for making stocking and supply easy like UHF TV.....

Time was when all you could get Home Light and Third in a
relatively small part of the band.
If asked, I suppose the average customer would want all
National Local Commercial and Pirate stations from
88-108 Mhz irrespective of direction.

--
Graham.

%Profound_observation%