But even having set up the correct band/mode/filter/antenna etc it is
still easy to accidentally cancel split under pressure, it's a K3
thing, is it?

No, it's a programmer thing ... the same thing happens with Yaesu (new)
and Kenwood rigs and DX4Win sends a split off before the frequency
command with those rigs as well.

73,

   ... Joe, W4TV


On 2015-02-14 3:19 PM, Mike Harris wrote:
Hi,

Occasionally DXpeds lose their split setting which causes chaos when
running a pile. The usual comment is it's a K3 thing.  The question is
why is it?

I use Logger32 and when I click on a spot whilst in split mode, the K3
QSYs and split is cancelled.

At first I thought it was because that Config: SPLT SV was NO so I
changed it to YES but this didn't make any difference.  Certainly I
could change band and return and split was indeed saved.

Next I put the K3 in split and then entered a frequency in the same band
in the L32 log entry window, the K3 QSYed and split cancelled.

Next restored split and entered a frequency from the K3 keypad, split
stayed on.

OK, looked at what was happening on the com port serving the K3.  When
L32 sends the frequency to the K3 it prefixes it with FR0 which
according to the programmers reference cancels split mode.  So the
response of the K3 was to be expected.  A typical example is:

Set Radio Freq/Mode: FR0;00018160000;MD2;FA0018160000;

No idea what other software does in these circumstances.  However, if
popular DXped software, N1MM or the like does something similar it will
be easy for a DXped operator to unknowingly and unnoticed cancel split
and go walkabout whilst tuning the pileup.

Clearly FR0 is a useful command, I use it in an RTTY macro to cancel
split.  I guess that the L32 development team assume that if you enter a
QSY you intend to come out of split so include the FR0, reasonable I
guess for a home operation.  Users of alternative applications might
wish to conduct the same tests.

The simple answer is better cockpit drill by the DXped operator.  But
even having set up the correct band/mode/filter/antenna etc it is still
easy to accidentally cancel split under pressure, it's a K3 thing, is it?

Have I missed something?

Your thoughts please gentlemen,

Mike VP8NO









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