While monitoring the pskmail frequency I found the following:

<cmd><txrsid>ON</txrsid></cmd<SOH>00uF4EED:26 !4524.20N/00421.65Eyjpskmail 
0.4.0.2 en test 
sous xubuntu (Psk500 ...)76BB<EOT>

Which is a pskmail beacon from F4EED. You can see the arq command string, sent 
over the air.

Subsequent testing revealed that this error occurs in windows (100%) and 
sometimes in linux 
(some have reported this, never seen it myself so it is difficult to debug).

All command strings are subject to this. In the seldom cases that it happens 
under Linux, after 
running the ommand, the command string is also sent to the RX window (with the 
TX attribute set). 
In windows all commands are sent to the modem for transmit without showing up 
in either TX or RX window.

Here is the debug output for windows XP and UBUNTU 8.04-3 LTS

Windows XP:

Q: main: fldigi 3.13BK log started on Thu Dec 31 12:41:44 2009

D: [12:42:33] misc/arq_io.cxx:141: Command string: 
<cmd><txrsid>ON</txrsid></cmd>
D: [12:42:33] misc/arq_io.cxx:120: TxRsID turned ON
D: [12:42:33] misc/arq_io.cxx:527: <cmd><txrsid>ON</txrsid></cmd>
>>This is where it is going wrong, should not be sent...

D: [12:42:34] soundcard/sound.cxx:1202: input rbsize=16384
D: [12:42:34] soundcard/sound.cxx:1208: output rbsize=16384
D: [12:42:40] misc/arq_io.cxx:527: 00uPA0R><IS0GRB-3 4E96


Linux 8.04-3 LTS (no problem here...):

Q: main: fldigi 3.13BK log started on Thu Dec 31 13:11:22 2009

D: [13:12:31] misc/arq_io.cxx:141: Command string: 
<cmd><mode>PSK500R</mode></cmd>
D: [13:12:31] misc/arq_io.cxx:96: ARQ new modem set to PSK500R
D: [13:12:31] soundcard/sound.cxx:1202: input rbsize=16384
D: [13:12:31] soundcard/sound.cxx:1208: output rbsize=16384
D: [13:12:54] misc/arq_io.cxx:527: 00uPA0R:7 A8AB

D: [13:12:54] soundcard/sound.cxx:1202: input rbsize=16384
D: [13:12:54] soundcard/sound.cxx:1208: output rbsize=16384
D: [13:13:00] soundcard/sound.cxx:1202: input rbsize=16384
D: [13:13:00] soundcard/sound.cxx:1208: output rbsize=16384
D: [13:13:04] misc/arq_io.cxx:141: Command string: 
<cmd><txrsid>ON</txrsid></cmd>
D: [13:13:04] misc/arq_io.cxx:120: TxRsID turned ON
D: [13:13:05] misc/arq_io.cxx:527: 00uPA0R><PI4TUE 42F6
D: [13:13:05] soundcard/sound.cxx:1202: input rbsize=16384
D: [13:13:05] soundcard/sound.cxx:1208: output rbsize=16384
D: [13:13:12] soundcard/sound.cxx:1202: input rbsize=16384
D: [13:13:12] soundcard/sound.cxx:1208: output rbsize=16384
D: [13:13:31] misc/arq_io.cxx:141: Command string: 
<cmd><mode>PSK500R</mode></cmd>
D: [13:13:31] misc/arq_io.cxx:96: ARQ new modem set to PSK500R

D: [13:13:31] soundcard/sound.cxx:1202: input rbsize=16384
D: [13:13:31] soundcard/sound.cxx:1208: output rbsize=16384

I had not noticed this before as I never use windows myself (always get 
depressed 
while doing it)....

73,

Rein PA0R

-- 
http://pa0r.blogspirit.com
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