18
GSCAN
r,m,s,f
v7.0
Immediate command
GSCAN is a general scan function that will sample the audio signal applied at the HF port of the
KAM Plus. The signal is sampled
r
times per second, and the resulting binary data is sent to the
computer through the serial port. The first sample will be in the Most Significant Bit (MSB) of the
byte. Valid sample rates are from 1 to 4800 samples per second. The
m
,
s
, and
f
values, if speci-
fied, set the MARK frequency, SPACE frequency and demodulated filter output bandwidth. If not
specified,
m
defaults to the MARK command setting,
s
defaults to the SPACE command setting,
and
f
is set to the HBAUD setting for the HF port (normally 300). NOTE: You must set MAXUSERS
to n/0 (disabling the VHF port) to use the GSCAN mode.
We have provided a program for PC computers which allows monitoring of G-TOR ARQ links using
the GSCAN function. Documentation for this program can be found on the diskette provided in a
file called "GMON.DOC".
GTDown
n
(
n
= 2 – 30) v7.0
Default 6
Sets the number of consecutive bad frames received before switching to the next lower speed.
GTErrs
n
(
n
= 30 – 255) v7.0
Default 40
Sets the time-out attempts for G-TOR. When attempting to link with another station, the unit times
out after
n
attempts without a response. When already linked, reception of
n
consecutive faulty
frames results in a timeout.
GTFuzzy
n
(
n
= 0 – 3) v7.0
Default 3
Sets the number of bits in a data acknowledgment that may be corrupted.
GTor [
xxxxxxxxxx
] v7.0
Immediate command
Entering GTOR with no parametors will place the KAM Plus in G-TOR Standby, allowing you to re-
spond to an incoming link request or transmit a CQ or other broadcast. If you also have MONITOR
ON, you can monitor FEC G-TOR broadcasts. By using the optional callsign Parameter, this com-
mand will initiate a link attempt with station
xxxxxxxxxx
. You can discontinue the link attempt, or
break an existing link, with the [Ctrl-C][D] directive, which will leave you in the G-TOR Standby
Mode, or with the [Ctrl-C][X] directive which returns you to PACKET Mode (cmd: prompt). NOTE:
If ARQBBS is on, you cannot transmit FEC and you will not be able to monitor FEC.
GTTries
n
(
n
= 0 – 9) v7.0
Default 2
Sets the maximum number of attempts to speed up. If unsuccessful after
n
attempts, the KAM
Plus will return to its previous G-TOR speed until it receives GTUP consecutive good frames.
GTUp
n
(
n
= 2 – 30) v7.0
Default 3
Sets the number of consecutive good frames received before switching to 300 baud operation.
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