[amsat-bb] AMSAT Broadband Preamp

[Paul Stoetzer]

The documentation for the preamp is here:
http://store.amsat.org/catalog/docs/preamp.pdf

The limited testing described in the documentation shows 15 - 20 dB of gain.

The preamp is based on the MAR7 amplifier. The typical noise figure of
that device is 5.0 dB per these specifications:
http://www2.toulouse.iufm.fr/iufm/etudiants/concours/cned/sujets_99/acrobat/docs/mar-xx.pdf

73,

Paul, N8HM

On Wed, Sep 14, 2016 at 9:17 AM, Joe <nss at mwt.net> wrote:
> I can not seem to find any spec's on it.
>
> Gains,, Noise figures etc..
>
> Joe WB9SBD
> Sig
> The Original Rolling Ball Clock
> Idle Tyme
> Idle-Tyme.com
> http://www.idle-tyme.com
>
> On 9/14/2016 7:05 AM, Rolf Krogstad wrote:
>>
>> I use it for portable operations with my Arrow antenna.  For my home setup
>> I use an ARR rf-switched preamp on the 70 cm antenna.   Heed Jerry N0JY's
>> warnings about never transmitting through the amsat one.  You will burn it
>> out every time!
>>
>> 73
>> Rolf. NR0T
>>
>> On Sep 13, 2016 11:04 PM, "David Mennerich" <david.n2teb at gmail.com> wrote:
>>
>>   I started working some of the LEO SSB satellites again recently and came
>> across a broadband preamp that is sold by AMSAT. Here is the link:
>> http://store.amsat.org/catalog/product_info.php?cPath=1&products_id=118
>>
>> Has anyone here used this before?  Perhaps this would help me 'hear' a
>> little better with my Arrow antenna, and I could use it for V/U and U/V
>> modes. For those of you that operate with an Arrow, do you use this preamp
>> or some other preamp?  It appears there are other preamps out there that
>> are more expensive, but require one per band (V or U).  This one will
>> cover
>> both - seems like a good option, just wanted to get your thoughts.
>>
>> Thanks!  Dave N2TEB
>> _______________________________________________
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>> expressed
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>> AMSAT-NA.
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>> _______________________________________________
>> Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership. Opinions
>> expressed
>> are solely those of the author, and do not reflect the official views of
>> AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>
>>
>>
>
> _______________________________________________
> Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
> expressed
> are solely those of the author, and do not reflect the official views of
> AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb