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23cm Projects - Pre-Amplifiers

23cm GaAs-FET preamplifier by YO5OFH
On 23cm the best way to obtain a good RX-sensitivity is to use a GaAs-FET in the front-end, since these devices show very low noise figures. This particular design is not very different from the common ones.
https://www.qsl.net/yo5ofh/projects/preamplifiers/23_cm_gaas_fet_preamplifier.htm

435 + 1296MHz ATF54143 Pre-amplifier by GØMRF
The ATF54143 is a PHEMT device from Agilent technologies that can provide low noise figures combined with high signal handling characteristics.
http://www.g0mrf.com/432LNA.htm

A 1296MHz 2* 2*2C39 Power Amplifier by DL4MEA
This is how all is assembled: A table just below the roof with my 23cm transverter and the power amplifier. Below the table you will see a battery of capacitors which should support the much too small transformer.
http://www.qsl.net/dl4mea/23c39/23c39.htm

A low noise amplifier (for the 23cm band) by PA4DAN
I wrote a story about this amplifier for school.
http://pa4dan.nl/ham/homebrew/lna23/

Selektive HEMT-Vorstufe für 23 cm durch DB6NT
Der hier vorgestellte rauscharme Vorverstärker wurde so ausgelegt, dass er für alle Betriebsarte und -fälle wie ATV, OSCAR, SSB/CW usw. verwendet werden kann.
http://www.db6nt.de/fileadmin/userfiles/_pdf/download_archiv/23cm_Vorverstaerker_2.pdf

Creation date : 08/09/2018 @ 21:27
Last update : 15/08/2024 @ 23:10
Category : 23cm Projects
Page read 7720 times

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