[hpsdr] Penny PTT unkeying spike - T/R sequencing?

[Phil Harman]

Hi Tom,

As far as I am aware the automatic dB calibrate does not function with
HPSDR boards.

You need to do the per band calibration manually.

73 Phil...VK6APH





> Phil and all:
>
> I did try moving the db per band settings above 38 a few times before and
> found no difference in the spike. However, since running it above 42db I
> haven't had a Penny spurious lock-up yet.  Hopefully that is a trend...
> :-)
>
> One thing I didn't mention that may be a clue?  When I do a DB calibrate
> on
> the PA final, (regular, not advanced) the automation gets about 3/4 way
> through with the db gain ending at 38db - and then a message pops up
> saying
> "invalid calculations....." and aborts.  I have a good 50 ohm Bird dummy
> load on it. This happens on 80M or any band for that matter.  Is this
> meaningful?
>
> Phil, I did try the test with the 50 ohms right off Penny's BNC connector
> and same results.
>
> I will look at pin 3 of DB25 pin as you suggested.
>
> OK on KISS. Yes, I would welcome that as a diagnostic tool.
>
>
> Joe/RQG - OK on not needing ( -12V). I thought  Ozy needed it, but will
> look
> again. It is a rather noisy supply anyway - being switched, so I'd be glad
> to get rid of it with that jumper disable.
>
> Still testing and trying different things here...
>
> T



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