[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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