Thanks Hans.
Mystery solved.
toggle quoted message
Show quoted text
--- In QRPLabs@..., Hans Summers <hans.summers@...> wrote:
Hi Andy, John
There was a request to keep the output on frequency and the TX going, in
FSK/CW mode in between frames, except during the 13 seconds calibration, so
that the temperature would be more constant and reduce the drift. This was
put into v2.03. An unintended consequence was that on WSPR, the kit stays
on frequency, though it is in key-up mode. However even in the key-up mode,
some signal leakage does occur and I believe this is responsible for the
effect you see.
In v2.04 I do plan to eliminate this effect: I'll move the DDS off
frequency or put it to zero frequency during key-up so that you don't see
this effect. As soon as I get a chance to do this, I will. But there are
only so many hours in the day, and they never seem really enough :-(
So in conclusion: just don't worry about it. It won't trouble WSPR decodes
and I'll take care of it in the next firmware version, for anybody who
still is worried about it.
73 Hans G0UPL
On Wed, Jul 31, 2013 at 8:47 AM, andyfoad@... <
andyfoad@...> wrote:
**
I thought that Hans had changed the firmware to switch the DDS to
another frequency when the TX goes off, in order to make monitoring
the tx frequency easier.
I wonder if a bit of code got lost from the beta version - Hans ?
Aha - did that feature get dropped in order to meet the GPS calibration
procedures ?
73 de Andy
