Hi everyone.
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
2.4G inserts for bird watt meters are few and far between.....I wonder if the one that covers 400M to 1GHz would work.?
73
David G0MRF
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
Look for:
"N1201SA"
on Ebay ~$150
On Tue, Sep 4, 2018 at 4:39 PM Zach Metzinger zmetzing@pobox.com wrote:
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 _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
participants (3)
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David G0MRF -
Stefan Wagener -
Zach Metzinger