[hpsdr] 100W PA for Hermes

[Helmut Oeller]

Hi,

is it right that IM3 is only -30 dBc? For my impression too bad when driving a power amp.

73, Helmut

-----Ursprüngliche Nachricht-----
Von: hpsdr-bounces at lists.openhpsdr.org [mailto:hpsdr-bounces at lists.openhpsdr.org] Im Auftrag von Kjell Karlsen
Gesendet: Sonntag, 13. November 2011 19:28
An: hpsdr at lists.openhpsdr.org
Betreff: Re: [hpsdr] 100W PA for Hermes

***** High Performance Software Defined Radio Discussion List *****

Hi Jeff.

As Abhi say, I have constructed a 100W PA and I am finishing the final PCB  
layout now.

One lab model and 2 Beta boards have been built and tested and soon I hope  
to get the results from two other builders in DL.

After the modification of the output transformer the results are very  
good. Power output is > 100W PEP with >-30 dBc IM3 on all bands.

I´ll post the measured results on  
http://openhpsdr.org/wiki/index.php?title=MUNIN soon.

73, Kjell






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