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Joining 2 aerials



 
 
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  #1  
Old March 22nd 08, 06:37 PM posted to uk.tech.digital-tv
Brian Day
external usenet poster
 
Posts: 3
Default Joining 2 aerials

Just spent £ 100.00 on a 91 element high gain digital aerial, plus masthead
amp. and power supply. All good kit from Maplins.
Set aerial at 200 degrees pointing to Bluebell Hill,(Kent) thing is i don't
get channel 5 on the 3 freeview boxes and on our 'ordinary' TV its
grainy and comes and goes. Accoding to Channel5 site and freeview site i
should get this on a digital signal.
Anyway my 2 old aerials where semi decent and i'm wondering if i can put one
of these back up and point it to Crystal Palace
then connect with some digital coax (or copper wire) to my new aerial via
the elements. (not the main fixing element that the coax connect to)
Would i then have the benefit of 2 aerials pulling in extra signal
strengths?



(Dont want to point new aerial at Crystal Palace as will get fewer freeview
chanels.)

Appreciate any tips.

cheers


brian day


  #2  
Old March 22nd 08, 07:28 PM posted to uk.tech.digital-tv
Woody[_2_]
external usenet poster
 
Posts: 135
Default Joining 2 aerials

"Brian Day" wrote in message
news
Just spent £ 100.00 on a 91 element high gain digital aerial, plus
masthead amp. and power supply. All good kit from Maplins.
Set aerial at 200 degrees pointing to Bluebell Hill,(Kent) thing is i
don't get channel 5 on the 3 freeview boxes and on our 'ordinary' TV
its
grainy and comes and goes. Accoding to Channel5 site and freeview site
i should get this on a digital signal.
Anyway my 2 old aerials where semi decent and i'm wondering if i can
put one of these back up and point it to Crystal Palace
then connect with some digital coax (or copper wire) to my new aerial
via the elements. (not the main fixing element that the coax connect
to)
Would i then have the benefit of 2 aerials pulling in extra signal
strengths?



(Dont want to point new aerial at Crystal Palace as will get fewer
freeview chanels.)

Appreciate any tips.

cheers


brian day



You are south of Watford Gap so I don't claim to understand you as a
southerner.

But how do you come to the conclusion that Bluebell Hill will give you
more muxes than CP when CP is a main station with 20KW and 30KW erps?

If you combine antennae you need a special device called a duplexer,
except that channel-wise Bluebell Hill is all over the place. An
inductive splitter/combiner might be better - and a lot cheaper.

It would help if you gave an indication where you are situated - other
than on a bearing of 20deg from Bluebell Hill (presumably somewhere in
Essex - that would explain a lot.)


--
Woody

harrogate three at ntlworld dot com


  #3  
Old March 22nd 08, 08:03 PM posted to uk.tech.digital-tv
Alan
external usenet poster
 
Posts: 728
Default Joining 2 aerials

In message , Brian Day
wrote

Just spent £ 100.00 on a 91 element high gain digital aerial, plus masthead
amp. and power supply. All good kit from Maplins.


How can you tell? Maplin don't give a full spec for their 91 element
aerial.

What's the gain of your masthead amplifier?

Set aerial at 200 degrees pointing to Bluebell Hill,(Kent) thing is i don't
get channel 5 on the 3 freeview boxes and on our 'ordinary' TV its
grainy and comes and goes. Accoding to Channel5 site and freeview site i
should get this on a digital signal.


I have a much smaller log periodic wideband aerial pointing at Bluebell
Hill from Southend-on-Sea (bearing 209 degrees) and get all the digital
signals (MUXs) without problems.

Channel 5 on analogue and Channel 5 on digital are two completely
different beasts. I never got a 'good' channel 5 on analogue from
either CP or Bluebell Hill but its never been a problem with digital.

How have you split the signal from the aerial to go to your 3 Freeview
boxes?

Anyway my 2 old aerials where semi decent and i'm wondering if i can put one
of these back up and point it to Crystal Palace
then connect with some digital coax (or copper wire) to my new aerial via
the elements. (not the main fixing element that the coax connect to)


Aerials don't work in the way you imagine.

Would i then have the benefit of 2 aerials pulling in extra signal
strengths?


No.

(Dont want to point new aerial at Crystal Palace as will get fewer freeview
chanels.)


Why do you believe this? CP carries all the digital channels and if I
point my wideband aerial to that transmitter I can get them all - but
less reliably due to the close proximity of tall buildings on nearly the
same bearing as the transmitter.

--
Alan
news2006 {at} amac {dot} f2s {dot} com
  #4  
Old March 22nd 08, 09:33 PM posted to uk.tech.digital-tv
Brian Day
external usenet poster
 
Posts: 3
Default Joining 2 aerials


"Alan" wrote in message
...
In message , Brian Day
wrote

Just spent £ 100.00 on a 91 element high gain digital aerial, plus
masthead
amp. and power supply. All good kit from Maplins.


How can you tell? Maplin don't give a full spec for their 91 element
aerial.

=====
It must be good it has a made in Taiwan sticker on the box, it has 16db gain
and lots of other exciting features
Its a A21HG, like this
http://www.maplin.co.uk/module.aspx?...21124&doy=22m3
=====

What's the gain of your masthead amplifier?

======
13db as far as i know, i have discarded the box and cant find it on their
site, but it's a 4 outlet model.
The power goes back up lead 1 with one of these :-
L25bb http://www.maplin.co.uk/module.aspx?...44214&doy=22m3
Couple of simple jumper switches to get it all singing and dancing.
======



Set aerial at 200 degrees pointing to Bluebell Hill,(Kent) thing is i
don't
get channel 5 on the 3 freeview boxes and on our 'ordinary' TV its
grainy and comes and goes. Accoding to Channel5 site and freeview site i
should get this on a digital signal.


I have a much smaller log periodic wideband aerial pointing at Bluebell
Hill from Southend-on-Sea (bearing 209 degrees) and get all the digital
signals (MUXs) without problems.

Channel 5 on analogue and Channel 5 on digital are two completely
different beasts. I never got a 'good' channel 5 on analogue from either
CP or Bluebell Hill but its never been a problem with digital.

How have you split the signal from the aerial to go to your 3 Freeview
boxes?

=====
With the above kit.
=====

Anyway my 2 old aerials where semi decent and i'm wondering if i can put
one
of these back up and point it to Crystal Palace
then connect with some digital coax (or copper wire) to my new aerial via
the elements. (not the main fixing element that the coax connect to)


Aerials don't work in the way you imagine.

======
yes, this slowly dawned on me !
======

Would i then have the benefit of 2 aerials pulling in extra signal
strengths?


No.

======
Thanks, nice simple reply, i found that easy to digest.
======

(Dont want to point new aerial at Crystal Palace as will get fewer
freeview
chanels.)


Why do you believe this? CP carries all the digital channels and if I
point my wideband aerial to that transmitter I can get them all - but less
reliably due to the close proximity of tall buildings on nearly the same
bearing as the transmitter.

=======
Tomorrow brings a fresh start, more fiddling, coffee and cursing.
but i think i may be pointing to Crytal Palace by close of play.
=======

--
Alan
news2006 {at} amac {dot} f2s {dot} com

=====
Alan, thanks for the reply, appreciated.

Brian Day
=====


  #5  
Old March 22nd 08, 09:34 PM posted to uk.tech.digital-tv
Brian Day
external usenet poster
 
Posts: 3
Default Joining 2 aerials


"Woody" wrote in message
...
"Brian Day" wrote in message
news
Just spent £ 100.00 on a 91 element high gain digital aerial, plus
masthead amp. and power supply. All good kit from Maplins.
Set aerial at 200 degrees pointing to Bluebell Hill,(Kent) thing is i
don't get channel 5 on the 3 freeview boxes and on our 'ordinary' TV its
grainy and comes and goes. Accoding to Channel5 site and freeview site i
should get this on a digital signal.
Anyway my 2 old aerials where semi decent and i'm wondering if i can put
one of these back up and point it to Crystal Palace
then connect with some digital coax (or copper wire) to my new aerial via
the elements. (not the main fixing element that the coax connect to)
Would i then have the benefit of 2 aerials pulling in extra signal
strengths?



(Dont want to point new aerial at Crystal Palace as will get fewer
freeview chanels.)

Appreciate any tips.

cheers


brian day



You are south of Watford Gap so I don't claim to understand you as a
southerner.

====
I can understand this as until recently i thought the world ended at
Watford, i was always warned against travelling
North of Watford due to civil unrest and taboo habits of peculiar
inhabitants. Anybody who doesn't say 'Saarfend'
is distinctly dodgy.
====
But how do you come to the conclusion that Bluebell Hill will give you
more muxes than CP when CP is a main station with 20KW and 30KW erps?

=======
According to Freeview site CP broadcasts fewer channels, of course this
information may be like
the sour and pungent 'Yop' i found in my fridge today (very out of date)
========


If you combine antennae you need a special device called a duplexer,
except that channel-wise Bluebell Hill is all over the place. An inductive
splitter/combiner might be better - and a lot cheaper.

=======
Erm, maybe not. The thought of spending any more in the short term is not
a viable option. action: throws the 3ft length of carefully stripped
digital coax
=======

It would help if you gave an indication where you are situated - other
than on a bearing of 20deg from Bluebell Hill (presumably somewhere in
Essex - that would explain a lot.)

========
I'm near to Basildon in Essex, most people don't come near where i live
unless they have taken the wrong turning,
and those that do are often never seen again.
========
Woody, I thank you for your reply - i am back up the ladder tomorrow for
some repositioning, checking connections
and re-enactment of 'Deadliest Catch', probably minus 5 today with the chill
factor. I have run out of dry clothes
and am now wearing an old lumberjacks shirt that my dog refused to sleep on.
=======
Brian Day



--
Woody

harrogate three at ntlworld dot com




  #6  
Old March 23rd 08, 02:05 AM posted to uk.tech.digital-tv
Alan
external usenet poster
 
Posts: 728
Default Joining 2 aerials

In message , Brian Day
wrote

I'm near to Basildon in Essex,


That explains a lot - one of the locals has nicked the signal before it
got to your aerial. Once upon a time they shipped undesirables out to
Australia but in the 50/60s it was deemed as not being politically
correct so they used Basildon and Harlow instead.

most people don't come near where i live
unless they have taken the wrong turning,
and those that do are often never seen again.


I work in Basildon and the H&S advice about drinking in the local pubs
in the evening is don't use the bar with the glass door as you will
bleed quite a lot when thrown through it. If it wasn't so close to the
truth it would be funny



--
Alan
news2006 {at} amac {dot} f2s {dot} com
  #7  
Old March 23rd 08, 10:44 AM posted to uk.tech.digital-tv
Woody[_2_]
external usenet poster
 
Posts: 135
Default Joining 2 aerials

"Brian Day" wrote in message
news

"Woody" wrote in message
...
"Brian Day" wrote in message
news
Just spent £ 100.00 on a 91 element high gain digital aerial, plus
masthead amp. and power supply. All good kit from Maplins.
Set aerial at 200 degrees pointing to Bluebell Hill,(Kent) thing is
i don't get channel 5 on the 3 freeview boxes and on our 'ordinary'
TV its
grainy and comes and goes. Accoding to Channel5 site and freeview
site i should get this on a digital signal.
Anyway my 2 old aerials where semi decent and i'm wondering if i can
put one of these back up and point it to Crystal Palace
then connect with some digital coax (or copper wire) to my new
aerial via the elements. (not the main fixing element that the coax
connect to)
Would i then have the benefit of 2 aerials pulling in extra signal
strengths?



(Dont want to point new aerial at Crystal Palace as will get fewer
freeview chanels.)

Appreciate any tips.

cheers


brian day



You are south of Watford Gap so I don't claim to understand you as a
southerner.

====
I can understand this as until recently i thought the world ended at
Watford, i was always warned against travelling
North of Watford due to civil unrest and taboo habits of peculiar
inhabitants. Anybody who doesn't say 'Saarfend'
is distinctly dodgy.





Must be a suvvener - doesn't even know the difference between Watford
and the Watford Gap (which is near Rugby!)


--
Woody

harrogate three at ntlworld dot com


  #8  
Old March 23rd 08, 10:58 AM posted to uk.tech.digital-tv
Brian Gaff
external usenet poster
 
Posts: 7,824
Default Joining 2 aerials

I think the word 'no' comes to mind.
You would always loose signal when connecting aerials even with the proper
kit. Also the new aerial and the old will still get each others signals with
unpredictable results.


Have you tried the new aerial without an amp? Sounds counter intuitive I
know, but amplifiers can get messed up by strong out of band signals which
will give all sorts of problems.
Brian

--
Brian Gaff....Note, this account does not accept Bcc: email.
graphics are great, but the blind can't hear them
Email:
__________________________________________________ __________________________________________________ __________


"Brian Day" wrote in message
news
Just spent £ 100.00 on a 91 element high gain digital aerial, plus
masthead amp. and power supply. All good kit from Maplins.
Set aerial at 200 degrees pointing to Bluebell Hill,(Kent) thing is i
don't get channel 5 on the 3 freeview boxes and on our 'ordinary' TV its
grainy and comes and goes. Accoding to Channel5 site and freeview site i
should get this on a digital signal.
Anyway my 2 old aerials where semi decent and i'm wondering if i can put
one of these back up and point it to Crystal Palace
then connect with some digital coax (or copper wire) to my new aerial via
the elements. (not the main fixing element that the coax connect to)
Would i then have the benefit of 2 aerials pulling in extra signal
strengths?



(Dont want to point new aerial at Crystal Palace as will get fewer
freeview chanels.)

Appreciate any tips.

cheers


brian day



  #9  
Old March 23rd 08, 11:01 AM posted to uk.tech.digital-tv
Brian Gaff
external usenet poster
 
Posts: 7,824
Default Joining 2 aerials

I was trying to be kind. Most certainly, the CP transmitter tends to be
better in the main as the channels are closer together and at the low end of
the spectrum, and as far as I'm aware, it carries the same progs as Bluebell
does.

Brian

--
Brian Gaff....Note, this account does not accept Bcc: email.
graphics are great, but the blind can't hear them
Email:
__________________________________________________ __________________________________________________ __________


"Woody" wrote in message
...
"Brian Day" wrote in message
news
Just spent £ 100.00 on a 91 element high gain digital aerial, plus
masthead amp. and power supply. All good kit from Maplins.
Set aerial at 200 degrees pointing to Bluebell Hill,(Kent) thing is i
don't get channel 5 on the 3 freeview boxes and on our 'ordinary' TV its
grainy and comes and goes. Accoding to Channel5 site and freeview site i
should get this on a digital signal.
Anyway my 2 old aerials where semi decent and i'm wondering if i can put
one of these back up and point it to Crystal Palace
then connect with some digital coax (or copper wire) to my new aerial via
the elements. (not the main fixing element that the coax connect to)
Would i then have the benefit of 2 aerials pulling in extra signal
strengths?



(Dont want to point new aerial at Crystal Palace as will get fewer
freeview chanels.)

Appreciate any tips.

cheers


brian day



You are south of Watford Gap so I don't claim to understand you as a
southerner.

But how do you come to the conclusion that Bluebell Hill will give you
more muxes than CP when CP is a main station with 20KW and 30KW erps?

If you combine antennae you need a special device called a duplexer,
except that channel-wise Bluebell Hill is all over the place. An inductive
splitter/combiner might be better - and a lot cheaper.

It would help if you gave an indication where you are situated - other
than on a bearing of 20deg from Bluebell Hill (presumably somewhere in
Essex - that would explain a lot.)


--
Woody

harrogate three at ntlworld dot com



  #10  
Old March 23rd 08, 11:43 AM posted to uk.tech.digital-tv
Andy Burns[_3_]
external usenet poster
 
Posts: 125
Default Joining 2 aerials

On 23/03/2008 09:44, Woody wrote:

doesn't even know the difference between Watford
and the Watford Gap (which is near Rugby!)


Watford Gap is only a service station, named after the nearby village of
Watford in Northampton and the Watford lock flight.

http://en.wikipedia.org/wiki/Watford...rthamptonshire
http://en.wikipedia.org/wiki/Watford_Locks
 




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