On 19/07/2020 12:02, Martin Davies G0HDB wrote:
On 18 Jul 2020 at 21:51, Bill Somerville wrote:
Hi Martin,
thanks for that information. Even if it does turn out to be the K9JM
CI-V router, that's useful information to have. Are you using it because
you have a PW-1?
Morning Bill, no I don't have a PW-1 so you might wonder why I've got a K9JM
CI-V router in
my system...!
Previously, when I had an IC-7600 (until last October), I tried using both the
CI-V port and the
USB port for CAT purposes from two different apps (typically WSJT-X and a
logging app),
although the virtual COM port provided via the USB connection was used solely
to enable the
logging app to read the frequency and other data back from the rig - there was
no actual
control of the rig via that route (although it was possible). However, when
both the CI-V port
and the USB port were connected to the PC being there were frequent CI-V data
collisions,
so I sought a solution that would enable the two apps on the PC to access the
rig without the
data collisions occurring - the K9JM CI-V router was that solution, over three
years ago.
In essence, the K9JM router has a USB connection to the PC and one of the
router's CI-V
ports is connected to the rig's CI-V port; another of the router's CI-V ports
is 'looped back' to
the PC via a CI-V-to-USB adaptor. The 'primary' USB connection from the PC to
the CI-V
router is defined as COM3 on the PC and is used by WSJT-X, and the USB
connection from
the looped-back CI-V port on the router is defined as COM2 and is used by
whichever
logging or other app I'm running concurrently with WSJT-X (examples are
Logger32 and
Win-EQF*). The router ensures that there are no data collisions between the
data on the two
separate COM ports.
Although it might seem like an unconventional use of the K9JM CI-V router, the
configuration
works very well although it might not now be necessary to use the router - the
IC-7610 that
replaced my IC-7600 last October has the facility for 'uncoupling' the data on
its CI-V and
USB ports so there should no longer be any risk of data collisions when both
ports are being
used for CAT purposes. I haven't yet tried this...
Depending on how the K9JM CI-V router's software works, it's conceivable that
there's some
round-robin polling of the router's CI-V ports that could be leading (or
adding) to a delay
between the CAT PTT commands being received from WSJT-X via the CI-V router's
USB
connection to the PC and the PTT commands actually being forwarded to the rig
via the
router's CI-V port.
--
73, Martin G0HDB
Hi Martin,
I don't have a modern Icom with a USB connection, but I thought the
"Unlink from REMOTE" option achieved what you require with using both
CI-V bus connections simultaneously with one connection being passive.
73
Bill
G4WJS.
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