Thanks Chen,

Again the answer was in the manual.

73's

Dan

On Feb 20, 2012, at 2:21 AM, Kok wrote:

> What you are experiencing is likely not an RFI event. A bad RFI often
decapitates a USB sound card or serial port causing you to have to reinitialize
the device by unplugging and replugging in the USB device, or sometimes requires
a reboot.
>
> The easiest way to decide if you have an RFI event is to disconnect the
computer from the radio and/or operate cocoaModem through the built-in speakers.
>
> If cocoaModem continues to accept commands from its buttons, and not crashing
from RFI, it could simply be the watchdog timer in cocoaModem firing. This is
documented under both the Watchdog Timer paragraph and the Brag Tape paragraph
in the User's manual.
>
> The watchdog timer is a preventative mechanism that is required by the FCC
(Part 97.213 of the FCC rules) when you are telecommanding the radio-- those who
have used TNCs in the good old days for digital modes will remember the need to
remove physical jumpers to avoid the watchdog timer from firing.
>
> As described in the cocoaModem User's Manual, there is a checkbox in
cocoaModem's Preference panel to disable the watchdog timer. Do not disable the
watchdog timer if you are using cocoaModem under the Apple Remote Desktop, or
from a remote computer through AppleScript commands.
>
> The timeout is most typically exceeded by a long Brag Tape, or by typing ahead
in the transmit view and leaving the keyboard inactive for more than a minute
while the transmission is taking place.
>
> With both type-ahead and brag tape, the watchdog timer will restart its clock
with each mouse or keyboard activity while the cocoaModem window is active (or
by unselecting the aforementioned checkbox).
>
> Unless disabled, the watchdog timer is active on all modes that can transmit;
not just PSK31.
>
> - chen
>
>



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