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