What device to get the best reception from an externally mounted t.v
aerial. I think its a Yagi type. Basically the position moved some time
ago, due to high winds, but was never rectified because there was a
signal from a different source, but now the external aerial is needed.

wrote:
What device to get the best reception from an externally mounted t.v
aerial. I think its a Yagi type. Basically the position moved some time
ago, due to high winds, but was never rectified because there was a
signal from a different source, but now the external aerial is needed.

Not sure what you're actually asking here, but your best bet is to ask
on uk.tech.digital-tv

David

On Mon, 06 Mar 2006 15:08:44 -0800, nthng2snet wrote:

What device to get the best reception from an externally mounted t.v
aerial. I think its a Yagi type. Basically the position moved some time
ago, due to high winds, but was never rectified because there was a
signal from a different source, but now the external aerial is needed.

Get it put back into the right postion to get good reception !! Do the job
correctly.

Dave

What device to get the best reception from an externally mounted t.v
aerial. I think its a Yagi type. Basically the position moved some time
ago, due to high winds

A ladder.

Skipping over all the technical stuff; the problem is up at the aerial,
so that's where the answer is too.


--
Ian White

In article . com,
wrote:

What device to get the best reception from an externally mounted t.v
aerial. I think its a Yagi type. Basically the position moved some time
ago, due to high winds, but was never rectified because there was a
signal from a different source, but now the external aerial is needed.

The device you need is an engineer with analyser. You cannot get away with a
misaligned aerial. If you amplify a poor quality signal, you will get MORE
poor quality signal. No amplifier can find something that is not there,
amplifiers are for overcoming losses.


--
AJL Electronics (G6FGO) Ltd : Satellite and TV aerial systems
http://www.classicmicrocars.co.uk : http://www.ajlelectronics.co.uk

wrote:
What device to get the best reception from an externally mounted t.v
aerial. I think its a Yagi type. Basically the position moved some time
ago, due to high winds, but was never rectified because there was a
signal from a different source, but now the external aerial is needed.

A cheap portable TV is as good as it gets.


That way you get to see not only signal strength, but ghosting as well.
Adjust for best picture on all available channels.

Andy Luckman (AJL Electronics) wrote:
In article . com,
wrote:

What device to get the best reception from an externally mounted t.v
aerial. I think its a Yagi type. Basically the position moved some time
ago, due to high winds, but was never rectified because there was a
signal from a different source, but now the external aerial is needed.

The device you need is an engineer with analyser. You cannot get away with a
misaligned aerial. If you amplify a poor quality signal, you will get MORE
poor quality signal. No amplifier can find something that is not there,
amplifiers are for overcoming losses.


Total ******** as usual from the usual TV erection spammer.

Plug a TV in and wiggle the aerial until you get acceptable signals on
all available channels.

I AM an engineer, and believe me, you can get bogged down in dials and
scope traces far too much.

In the end its a quality picture you want, not some arbitrary reading on
a meter.

The message
from The Natural Philosopher contains these words:

Plug a TV in and wiggle the aerial until you get acceptable signals on
all available channels.

You can get a good start by taking a map reading to the nearest transmitter
http://www.bbc.co.uk/reception/trans...ns/index.shtml
and use that to get an initial aim. In my experience this is often enough.

While you're up there, check the connections in the aerial terminal box
- they're often rather narsty.

--
Skipweasel
Pay no attention to the man behind the curtain.

The Natural Philosopher wrote:
wrote:

What device to get the best reception from an externally mounted t.v
aerial. I think its a Yagi type. Basically the position moved some time
ago, due to high winds, but was never rectified because there was a
signal from a different source, but now the external aerial is needed.

A cheap portable TV is as good as it gets.


That way you get to see not only signal strength, but ghosting as well.
Adjust for best picture on all available channels.

Wollies do a 5 inch b/w portable TV for £9:99 ISTR.

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

In article , The Natural Philosopher
wrote:

Total ******** as usual from the usual TV erection spammer.

Excuse me?

Plug a TV in and wiggle the aerial until you get acceptable signals on
all available channels.

I would expect no better from someone of your standing. Always looking for a
bodge rather than do it properly.


I AM an engineer, and believe me, you can get bogged down in dials and
scope traces far too much.

Bless!

In the end its a quality picture you want, not some arbitrary reading on
a meter.

AH, now I see... You don't have any measuring equipment and resent the fact.
That's what comes from being a cheapskate.

Now please can the unwarranted abuse.

--
AJL Electronics (G6FGO) Ltd : Satellite and TV aerial systems
http://www.classicmicrocars.co.uk : http://www.ajlelectronics.co.uk

Andy Luckman (AJL Electronics) wrote:
In article , The Natural Philosopher
wrote:

Total ******** as usual from the usual TV erection spammer.

Excuse me?

Plug a TV in and wiggle the aerial until you get acceptable signals on
all available channels.

I would expect no better from someone of your standing. Always looking for a
bodge rather than do it properly.


I AM an engineer, and believe me, you can get bogged down in dials and
scope traces far too much.

Bless!

In the end its a quality picture you want, not some arbitrary reading on
a meter.

AH, now I see... You don't have any measuring equipment and resent the fact.
That's what comes from being a cheapskate.

Now please can the unwarranted abuse.


My guess is that neither does the OP.

I have had many many years peering into scope traces and dials and
needles..it has its place, but for something as utterly trivial as
putting up an aerial its a complete waste of time.

The main lobe is sufficiently braid that accuracy to the last degree is
not essential. What is FAR more relevant is usually aligning the first
(or any suitable) major NULL with the direction of any strong multipath
interference.

A field strength meter is of no use in that context. You need something
that will display the relative strength of short time delayed signals.

The cheapest precision instrument that does that is a *television set*.

A little knowledge is a dangerous thing Andy. Real professional
engineers with 30 years plus experience know that expensive test
equipment is useful, but its not the be all and end all of design or
installation, and its often not the quickest approach to a problem.

You can spam away all you like selling your 'professional services' but
I will continue to respond that a half a brain, a little time and a TV
set is far more appropriate answer to the problem than your expensive
services.