[hpsdr] Getting PowerSDR to display SWR

John Westmoreland john at westmorelandengineering.com
Wed Mar 7 18:07:42 PST 2012


Hello Phil,

If this can be implemented in PennyLane then that is great.

I will take a look at the source and see what it will take.

73's,
John
AJ6BC

On Wed, Mar 7, 2012 at 4:39 PM, Phil Harman <phil at pharman.org> wrote:

>   Hi John,
>
> Your correct, we did look at this before.  From memory the issues is that
> there is a delay between the FWD and REV samples that means for  other than
> a steady carrier the SWR reading is meaningless.  I think this was a
> problem with the Flex hardware but not sure if we will have the same
> problem.
>
> The solution may be to calculate the SWR in the FPGA on Penny(Lane) since
> that will have the least sample delays.
>
> 73 Phil...VK6APH
>
>
>
>  *From:* John Westmoreland <john at westmorelandengineering.com>
> *Sent:* Thursday, March 08, 2012 3:37 AM
> *To:* HPSDR list <hpsdr at lists.openhpsdr.org>
> *Subject:* [hpsdr] Getting PowerSDR to display SWR
>
> ***** High Performance Software Defined Radio Discussion List *****
>
>  ------------------------------
> HPSDR,
>
> I am sure this has been discussed before - but I can't seem to find it in
> the archives.
>
> Is there a way to get PowerSDR to display SWR on the TX Meter?  In the
> configuration settings there is a box to pick for this - but when you run
> there is not a way to select SWR.
> Reflected Power is there - but not SWR.
>
> Thanks in Advance.
>
> 73's,
> John
> AJ6BC
>
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