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70cm Projects - Amplifiers

Click to enlarge432MHz Low Noise Preamp with FHX32LG by JHØWJF
Presenting you another preamplifier design, made by Noriyuki (JH0WJF).
http://www.qsl.net/dl5lf/432_preamp.html
 

Click to enlarge432MHz Low Noise Preamplifier for Moonbounce Operation by DF9CY
Moonbounce is the most challenging field in Amateur Radio. Everything must be designed for to provide an optimum performance. A very low noise preamplifier as described here is an essential must.
http://www.df9cy.de/tech-mat/df9cy_432lna.htm

Click to enlarge435 + 1296MHz ATF54143 Pre-amplifier by GØMRF
The prototype for this amplifier was originally designed for 70cm and was used on the 2004 '3B9C' Dx-pedition to Rodriguez Island for satellite and EME. It had a noise figure of 0.49dB with an associated gain of 20dB.
http://www.g0mrf.com/432LNA.htm

70cm Power Amplifier durch DC4KU
Aufbau eines einfachen HF-Verstärkers für 430-450MHz mit einem M67749M-Verstärkermodul.
http://www.dc4ku.darc.de/Power_Amplifier.pdf
 

A 432MHz High Power Amplifier with a GS35b by DL4MEA
This amp is currently under construction. It does not work as expected, so here are just a few pictures from the construction. The cathode circuit is similar to CT1DMK's 70cm-GS35b.
http://www.qsl.net/dl4mea/2g35.htm


Creation date : 19/08/2007 @ 21:37
Last update : 05/09/2015 @ 18:37
Category : 70cm Projects
Page read 24137 times


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