On the blake site at http://www.blake-uk.com/page/proception_domestic 
there are two dual mode amplifiers and I am puzzled as to the difference 
between the two.

There is the X-series dual mode and the dual mode masthead amp and I 
can't honestly see the difference.

I have the variable gain (Not dual mode) fitted in my loft with a loft 
aerial but am considering replacing with a dual mode so am unsure which 
is preferable.

Geoff Lane

Mast head amp is outdoor and X series is indoor, according to the
Blakes/Proception catalogue.

Although it would work perfectly well, are you sure you need a dual
mode type?
Really, I think they are available so installers dont need to carry
both the standard multi way masthead amps and multiway ones for Sky/
magic eye use.

Geoff Lane wrote:
> On the blake site at http://www.blake-uk.com/page/proception_domestic 
> there are two dual mode amplifiers and I am puzzled as to the difference 
> between the two.
> 
> There is the X-series dual mode and the dual mode masthead amp and I 
> can't honestly see the difference.

proAMP104X and proMHD14R I presume you mean.  RF-wise they are indeed 
basically the same amplifier.  The obvious difference is in the housings 
- the '14R is in 'masthead format', suitable for indoor or outdoor use, 
while the '104X is an indoor-only product.  Otherwise:

- unlike the '14R, the '104X has a DC power input jack so it can be 
powered by a suitable local mains adapter, such as the proPSA123.  It 
also has a 2-colour power/mode LED indicator (absent on the '14R);

- max. supply voltage for the '14R is 12.6 volts and there is a surge 
protection clamping diode on the power rail, which provides some degree 
of lightning protection for the masthead application.  OTOH the '104X 
will operate up to 18 volts max. (spec'd) and higher voltages in 
practice.  (These figures apply to Mode 1.  For Mode 2 (Sky return-path 
mode) the max. supply voltage at the input is 12 V in both cases.)

> I have the variable gain (Not dual mode) fitted in my loft with a loft 
> aerial but am considering replacing with a dual mode so am unsure which 
> is preferable.

The '104X gives you the local powering option and a diagnostic LED, 
otherwise there's nothing to choose between them.

-- 
Andy

Andy Wade wrote:
>> I have the variable gain (Not dual mode) fitted in my loft with a loft 
>> aerial but am considering replacing with a dual mode so am unsure 
>> which is preferable.
> 
> The '104X gives you the local powering option and a diagnostic LED, 
> otherwise there's nothing to choose between them.

Thanks Andy.

Very pleased with my current variable gain device but may want to run an 
RF2 output from my Sky box, hence the enquiry.

Geoff Lane