[Premium-Rx] Wellbrook excellence !

[Peter Rovardi]

Its only on the ALA100 that I can  hear a real signal on 11.2 Khz,
using the AEG 1800/3, and none of my other  antennas come close.( 80m
Dipole, 20m Delta loop )

Amazing low noise at only 6ft and great for nulling out what you dont want 
to hear.

73,s   Peter     G4HSB








----- Original Message ----- 
From: "Carcia, Francis A HS" <francis.carcia at hs.utc.com>
To: <premium-rx at ml.skirrow.org>
Sent: Tuesday, November 21, 2006 10:30 PM
Subject: Re: [Premium-Rx] Wellbrook excellence !


> I've tested the push pull version with 9.5 dB gain biased at 65 ma each
> device and the dynamic range is higher than I can measure with my pair
> of 8640Bs. I figure at least 110 dB dynamic range.
>
>
> -----Original Message-----
> From: premium-rx-bounces at ml.skirrow.org
> [mailto:premium-rx-bounces at ml.skirrow.org] On Behalf Of Bjarne Mjelde
> Sent: Tuesday, November 21, 2006 5:08 PM
> To: premium-rx at ml.skirrow.org
> Subject: Re: [Premium-Rx] Wellbrook excellence !
>
> From what I know, Andy uses a Norton push-pull amp.  A description of a
>
> similar amp is found on
> http://www.kongsfjord.no/dl/Amplifiers/Ultralinear%202N5109%20And%202N30
> 53%20Amplifiers.pdf
>
> Bjarne Mjelde
> www.kongsfjord.no
> arcticdx.blogspot.com
>
> Alberto di Bene skrev:
>>> Of course, the other great advantage is that the ALA100 is shipped as
> a
>>> small black box and you locally supply the wire to make it work !  No
>>> problems with postage etc.
>>>
>>>
>>
>>   I know that I am asking almost the impossible, but does anybody
> knows if/where the schematic of that loop amplifier is
>> available ? It shouldn't be rocket science, after all, just a well
> designed amplifier, with a careful choice of
>> components. Something that many could be able to replicate for their
> personal use, without infringing any patents...(and
>> saving some money)  :-)
>>
>> 73  Alberto  I2PHD
>>
>> _______________________________________________
>>
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>>
>>
>>
>
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>
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>
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>