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-   -   Mast head amplifiers (http://www.homecinemabanter.com/showthread.php?t=64330)

No Name August 23rd 09 10:39 AM

Mast head amplifiers
 
I am not getting a very good signal from a loft aerial. I am going to
recable it to the TV and was also thinking of a masthead amplifier. Has
anyone got any recommendations. I have looked at two on the Net. One at
Maplin http://www.maplin.co.uk/module.aspx?moduleno=36573 and one at Satcure
http://www.satcure.co.uk/accs/page11c.htm#masthead.

Peter



Clive[_4_] August 23rd 09 11:54 AM

Mast head amplifiers
 

wrote in message
...
I am not getting a very good signal from a loft aerial. I am going to
recable it to the TV and was also thinking of a masthead amplifier. Has
anyone got any recommendations. I have looked at two on the Net. One at
Maplin http://www.maplin.co.uk/module.aspx?moduleno=36573 and one at
Satcure http://www.satcure.co.uk/accs/page11c.htm#masthead.

Peter

If there isn't enough signal to amplify then there will be no difference.
Even putting the aerial outside will vastly increase performance. You
could try a far better aerial with higher gain. Obviously in a loft it is
not flapping about in the wind, so you could align it precisely.



Brian Gaff August 23rd 09 03:23 PM

Mast head amplifiers
 
One problem is often that loft aerials either need to point through the
adjoining property, or that the tiles are pretty bad passers of RF, when wet
particularly.

Brian

--
Brian Gaff -
Note:- In order to reduce spam, any email without 'Brian Gaff'
in the display name may be lost.
Blind user, so no pictures please!
"Clive" wrote in message
...

wrote in message
...
I am not getting a very good signal from a loft aerial. I am going to
recable it to the TV and was also thinking of a masthead amplifier. Has
anyone got any recommendations. I have looked at two on the Net. One at
Maplin
http://www.maplin.co.uk/module.aspx?moduleno=36573 and one at
Satcure http://www.satcure.co.uk/accs/page11c.htm#masthead.

Peter

If there isn't enough signal to amplify then there will be no difference.
Even putting the aerial outside will vastly increase performance. You
could try a far better aerial with higher gain. Obviously in a loft it is
not flapping about in the wind, so you could align it precisely.





Bill Wright August 23rd 09 04:42 PM

Mast head amplifiers
 

wrote in message
...
I am not getting a very good signal from a loft aerial. I am going to
recable it to the TV and was also thinking of a masthead amplifier. Has
anyone got any recommendations. I have looked at two on the Net. One at
Maplin http://www.maplin.co.uk/module.aspx?moduleno=36573 and one at
Satcure http://www.satcure.co.uk/accs/page11c.htm#masthead.


No no no sir! I wouldn't advise this purchase sir. Try Proception. I think
Blakes sell them mail order. The chief Proception technical adviser, Mr
Andrew Wade, will be along in moment sir. He'll help you make a final
choice. But in case Mr Wade is delayed, could I suggest a model with a gain
figure of 16dB? Of course, sir doesn't need me to tell him that an outdoor
aerial would be a far better solution, technically if not aesthetically. Sir
will already be well aware that if one amplifies ****e the result is
amplified ****e. Is sir well aware, sir?

Bill



Peter Duncanson August 23rd 09 05:43 PM

Mast head amplifiers
 
On Sun, 23 Aug 2009 15:42:05 +0100, "Bill Wright"
wrote:


wrote in message
...
I am not getting a very good signal from a loft aerial. I am going to
recable it to the TV and was also thinking of a masthead amplifier. Has
anyone got any recommendations. I have looked at two on the Net. One at
Maplin http://www.maplin.co.uk/module.aspx?moduleno=36573 and one at
Satcure http://www.satcure.co.uk/accs/page11c.htm#masthead.


No no no sir! I wouldn't advise this purchase sir. Try Proception. I think
Blakes sell them mail order. The chief Proception technical adviser, Mr
Andrew Wade, will be along in moment sir. He'll help you make a final
choice. But in case Mr Wade is delayed, could I suggest a model with a gain
figure of 16dB? Of course, sir doesn't need me to tell him that an outdoor
aerial would be a far better solution, technically if not aesthetically. Sir
will already be well aware that if one amplifies ****e the result is
amplified ****e. Is sir well aware, sir?

Also available from CPC.
PROCEPTION - PROMHD11M - MAST HEAD AMP UHF, 16DB
http://cpc.farnell.com/proception/pr...6db/dp/AP01830

--
Peter Duncanson
(in uk.tech.digital-tv)

Ian Jackson[_2_] August 23rd 09 05:58 PM

Mast head amplifiers
 
In message , Peter Duncanson
writes
On Sun, 23 Aug 2009 15:42:05 +0100, "Bill Wright"
wrote:


wrote in message
.. .
I am not getting a very good signal from a loft aerial. I am going to
recable it to the TV and was also thinking of a masthead amplifier. Has
anyone got any recommendations. I have looked at two on the Net. One at
Maplin http://www.maplin.co.uk/module.aspx?moduleno=36573 and one at
Satcure http://www.satcure.co.uk/accs/page11c.htm#masthead.


No no no sir! I wouldn't advise this purchase sir. Try Proception. I think
Blakes sell them mail order. The chief Proception technical adviser, Mr
Andrew Wade, will be along in moment sir. He'll help you make a final
choice. But in case Mr Wade is delayed, could I suggest a model with a gain
figure of 16dB? Of course, sir doesn't need me to tell him that an outdoor
aerial would be a far better solution, technically if not aesthetically. Sir
will already be well aware that if one amplifies ****e the result is
amplified ****e. Is sir well aware, sir?

Also available from CPC.
PROCEPTION - PROMHD11M - MAST HEAD AMP UHF, 16DB
http://cpc.farnell.com/proception/pr...6db/dp/AP01830

That looks a goodun - low noise and Tetra filtering below 400MHz. All
you have to do is to find a suitable line power supply. While they
helpfully tell you that "Customers also bought a Blake UK A9
aluminium mast", it would be far more helpful if they told you which PSU
they used.
--
Ian

Bill Wright August 23rd 09 10:06 PM

Mast head amplifiers
 

"Ian Jackson" wrote in message
...
In message , Peter Duncanson
writes
On Sun, 23 Aug 2009 15:42:05 +0100, "Bill Wright"
wrote:


wrote in message
. ..
I am not getting a very good signal from a loft aerial. I am going to
recable it to the TV and was also thinking of a masthead amplifier. Has
anyone got any recommendations. I have looked at two on the Net. One at
Maplin http://www.maplin.co.uk/module.aspx?moduleno=36573 and one at
Satcure http://www.satcure.co.uk/accs/page11c.htm#masthead.

No no no sir! I wouldn't advise this purchase sir. Try Proception. I
think
Blakes sell them mail order. The chief Proception technical adviser, Mr
Andrew Wade, will be along in moment sir. He'll help you make a final
choice. But in case Mr Wade is delayed, could I suggest a model with a
gain
figure of 16dB? Of course, sir doesn't need me to tell him that an
outdoor
aerial would be a far better solution, technically if not aesthetically.
Sir
will already be well aware that if one amplifies ****e the result is
amplified ****e. Is sir well aware, sir?

Also available from CPC.
PROCEPTION - PROMHD11M - MAST HEAD AMP UHF, 16DB
http://cpc.farnell.com/proception/pr...6db/dp/AP01830

That looks a goodun - low noise and Tetra filtering below 400MHz. All you
have to do is to find a suitable line power supply. While they helpfully
tell you that "Customers also bought a Blake UK A9
aluminium mast", it would be far more helpful if they told you which PSU
they used.


Any masthead amp power supply will do.

Bill



Ian Jackson[_2_] August 23rd 09 10:51 PM

Mast head amplifiers
 
In message , Bill Wright
writes

"Ian Jackson" wrote in message
...
In message , Peter Duncanson
writes
On Sun, 23 Aug 2009 15:42:05 +0100, "Bill Wright"
wrote:


wrote in message
.. .
I am not getting a very good signal from a loft aerial. I am going to
recable it to the TV and was also thinking of a masthead amplifier. Has
anyone got any recommendations. I have looked at two on the Net. One at
Maplin http://www.maplin.co.uk/module.aspx?moduleno=36573 and one at
Satcure http://www.satcure.co.uk/accs/page11c.htm#masthead.

No no no sir! I wouldn't advise this purchase sir. Try Proception. I
think
Blakes sell them mail order. The chief Proception technical adviser, Mr
Andrew Wade, will be along in moment sir. He'll help you make a final
choice. But in case Mr Wade is delayed, could I suggest a model with a
gain
figure of 16dB? Of course, sir doesn't need me to tell him that an
outdoor
aerial would be a far better solution, technically if not aesthetically.
Sir
will already be well aware that if one amplifies ****e the result is
amplified ****e. Is sir well aware, sir?

Also available from CPC.
PROCEPTION - PROMHD11M - MAST HEAD AMP UHF, 16DB
http://cpc.farnell.com/proception/pr...6db/dp/AP01830

That looks a goodun - low noise and Tetra filtering below 400MHz. All you
have to do is to find a suitable line power supply. While they helpfully
tell you that "Customers also bought a Blake UK A9
aluminium mast", it would be far more helpful if they told you which PSU
they used.


Any masthead amp power supply will do.

True. Most are 12V and will supply sufficient current without
complaining. But any decent salesman would automatically suggest a
suitable 'one of ours' product. Even I, as a mere engineer, know this.
--
Ian

Andy Wade August 24th 09 12:29 AM

Mast head amplifiers
 
Bill Wright wrote:

Any masthead amp power supply will do.


Or none... If your (the OP's) Freeview box / IDTV / DVB-T receiving
apparatus will provide 5 volts at its aerial socket that's quite
sufficient to power any of the Proception single-stage mastheads - i.e.
the proMHD11L, '11M, '12M, '14R. These amplifiers all draw around 25
mA, which is within the standard 30 mA rating of the said DTT receivers.

Otherwise, the recommended Proception PSUs are the proPSU11F
(F-connectors), proPSU11C ('IEC' connectors), or proPSU12F (twin-o/p,
F-connectors with integral 2-way splitter).

HTH
--
Andy

Ian Jackson[_2_] August 24th 09 12:37 AM

Mast head amplifiers
 
In message , Andy Wade
writes
Bill Wright wrote:
Any masthead amp power supply will do.


Or none... If your (the OP's) Freeview box / IDTV / DVB-T receiving
apparatus will provide 5 volts at its aerial socket that's quite
sufficient to power any of the Proception single-stage mastheads - i.e.
the proMHD11L, '11M, '12M, '14R. These amplifiers all draw around 25
mA, which is within the standard 30 mA rating of the said DTT receivers.

Hang on....
The masthead amplifiers are 12V. They might 'work' with 5V, but I doubt
if they work well.

I've only had five Freeview STBs, and none have had any provision for
DC out at the aerial input. I'd be surprised if any/many do.

Otherwise, the recommended Proception PSUs are the proPSU11F
(F-connectors), proPSU11C ('IEC' connectors), or proPSU12F (twin-o/p,
F-connectors with integral 2-way splitter).

HTH

--
Ian


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