Re: [amsat-bb] AMSAT Broadband Preamp
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@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 _______________________________________________ Sent via AMSAT-BB@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
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@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 _______________________________________________ Sent via AMSAT-BB@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@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
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/...
73,
Paul, N8HM
On Wed, Sep 14, 2016 at 9:17 AM, Joe nss@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@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 _______________________________________________ Sent via AMSAT-BB@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@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@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
participants (3)
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Joe -
Paul Stoetzer -
Rolf Krogstad