[hpsdr] Reverse Power Tolerance

[Jim Sanford]

One counter-argument:  What about the components in the low/band pass 
filtering?

I ask, because I have repaired several bandpass filters for our club 
that were blown up running 100 watts into an antenna with high (2 or 3 
SWR).  We have been pounding on guys to put the filter BETWEEN the radio 
and the antenna . . .

73, Good luck, & Happy New Year!

Jim

wb4gcs at amsat.org


On 12/31/2018 10:27 AM, Helmut Oeller wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> HI Tony,
>
> the final MOSFETs are specified with : 'no destroy'  at a load VSWR=20:1(All
> Phase).
> So no concern, if your meter even shows 3:1 equal 50 percent reflected power
> for a short period of time. On the other hand it makes no sense to run a
> antenna with 3 dB mismatch.
> Excessive mismatch endangers the finials due to therminal stress and/or RF
> voltage issues, but usually no problem for the driver or actually your
> exciter board Hermes.
>
>
> 73, DC6NY
>
> -----Ursprüngliche Nachricht-----
> Von: Hpsdr <hpsdr-bounces at lists.openhpsdr.org> Im Auftrag von Tony Hagen
> Gesendet: Montag, 31. Dezember 2018 10:46
> An: hpsdr at lists.openhpsdr.org
> Betreff: [hpsdr] Reverse Power Tolerance
>
> ***** High Performance Software Defined Radio Discussion List *****
>
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