> Clearing this selection, plus putting microHam Router in
> full QSK mode without asserting PTT in CW, which may or may
> not have anything to do with this issue, cures this and the
> radio no longer gets "stuck" in transmit.
Selecting QSK in microHAM Router has nothing to do with this.
The problem is purely a race condition in the transceiver
control logic; it effects more transceivers that the K3.
Several transceivers appear to ignore "TX OFF" commands when
both PTT and "software control" occur too closely together.
> This does not seem to happen with TenTec Orion 1, Kenwood
> (TS570, TS480 and TS850 are the only Kenwoods have tested)
> or Icom (as they cant do PTT via Serial command over CI-V)
> but it does happen with K3.
No, this has been reported in all brands of transceiver -
including Icom which supports serial (Command) PTT in most
models released in the last five years+ (everything since
the IC-706mkII).
73,
... Joe, W4TV
On 1/21/2011 1:58 PM, Lu Romero wrote:
> Rich is absolutely correct:
>
> In various environments using N1MMLogger, have seen K3's
> (mine included) that have randomly gotten "stuck in
> transmit" in RTTY, in SSB (using the N1MM DVK) and in CW, as
> well, when using F-Key macros. In all three modes, I have
> found "Radio PTT On by Command" ticked in the N1MM radio
> configuration.
>
> Clearing this selection, plus putting microHam Router in
> full QSK mode without asserting PTT in CW, which may or may
> not have anything to do with this issue, cures this and the
> radio no longer gets "stuck" in transmit.
>
> This does not seem to happen with TenTec Orion 1, Kenwood
> (TS570, TS480 and TS850 are the only Kenwoods have tested)
> or Icom (as they cant do PTT via Serial command over CI-V)
> but it does happen with K3.
>
> I have no clue about Yaesu, as my shack is a Yaesu-free
> zone. :)
>
> In all cases, pressing ESC gets the radio "unstuck".
>
> This might be a good entry for the N1MM "Gotchas" document
> being compiled by N4ZR!
>
> -lu-W4LT-
> K3 # 3192
>
>
>
> Message: 27
> Date: Thu, 20 Jan 2011 22:28:00 -0500
> From: Richard Ferch<ve3...@storm.ca>
> Subject: Re: [Elecraft] FW: [N1MM] FSK problems on K3 radio
> To: "elecraft@mailman.qth.net"<elecraft@mailman.qth.net>
> Message-ID:<4d38fd40.4070...@storm.ca>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Tom,
>
> I have had this "stuck in transmit" happen to me a number of
> times, most
> recently just yesterday when I was playing with various
> settings while
> checking out a configuration problem for another N1MM user.
> I have also
> encountered several similar cases on user groups, not only
> for N1MM
> Logger but also for the DXLabs software suite.
>
> The common thread in all of these problem reports appears to
> be that
> when the "stuck in transmit" problem happened, there were
> two methods of
> PTT control being used at once. For example, a user may have
> been using
> PTT via software command over the serial link (TX; and RX;
> commands) in
> parallel with a hardware PTT connection (either to the K3's
> PTT IN jack,
> to the AUX connector, or using RTS on the RS232 port).
> Whenever this
> problem has happened to me, I have always found that I had
> two parallel
> PTT methods configured.
>
> In every such case that I am aware of, disabling all but one
> of the PTT
> methods has always solved the problem. It looks to me as if
> you have a
> hardware PTT connection from DTR on COM1 - at least, that is
> how you
> have EXTFSK configured. If so, that is the only PTT method
> you need. In
> the N1MM Configurer for COM3, is the "Radio PTT via command"
> check box
> checked? If so, try unchecking it to see if that solves the
> problem.
>
> 73,
> Rich VE3KI
>
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