[amsat-bb] Re Measuring VSWR at 2.4GHz

David G0MRF g0mrf at aol.com
Wed Sep 5 21:47:12 UTC 2018


Hi Zach / Terry / Simone / Graham / Stefan.


Thanks very much for the advice / offers and links.


Hopefully there is a PA saving solution in there. Time to try the bird 43 out of its comfort zone, but also get the soldering iron out.


See you on P4A 



73


David




On 09/04/18 16:00, David G0MRF via AMSAT-BB wrote:
> Does anyone know a cost effective way of measuring VSWR or reflected power at 2.4GHz ?
> 
> I'm building a 70cm to S band upconverter with 25 Watts output.
> Before I connect it to my dish feed, it would be nice to know that the match is reasonably close to 50 ohms.
> It would be nice for the PA transistor to last more than 1 QSO

David,

Try building the surface-mount version at the bottom of this page:

https://ludens.cl/Electron/swr/swr.html

They don't need (or tolerate) much power, but they are cheap to build!

--- Zach
N0ZGO


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