HELL statement
Transmits the Hellshreiber family of sub-modes. The format of the HELL statement is
HELL <sub mode> <frequency> <speed> <FSK> <message>
The <sub mode> parameter expects values as follows:
Sub mode Explanation
0
Slow-speed MFSK Hell (narrowband mode)
1
Standard full-speed Hellschreiber
2
Standard full-speed “DX” Hellschreiber
<frequency>
is the transmission frequency in Hz.
<speed>
is applicable only to the slow-speed MFSK narrowband sub mode. It is the number of
seconds required to transmit one whole Hell character. Example settings are 42 (means 1 second
per pixel) or 63 (1.5 seconds per pixel). The standard full-speed Hell sub modes have a fixed
transmission baud rate, so the Speed parameter is ignored for these sub modes.
<FSK>
is applicable only to the slow-speed MFSK narrowband sub mode. It is the height of 5 rows
of pixels of the transmitted character, in Hz. This parameter is ignored for full-speed Hell sub
modes which use on/off keying without any frequency shift.
<message>
is the text to transmit, and may contain #-tags as explained above. The maximum
message string length is 64 characters. The actual transmitted message may be more than this
once the dynamic #-tags are substituted.
Example:
HELL 1 10138000 0 0 “AB2CD”
Transmits standard Hellschreiber on 10.138MHz with message “AB2CD”.
JT9 statement
Transmits one of the JT9 family of sub-modes. The format of the JT9 statement is
JT9 <sub mode> <frequency> <message>
The <sub mode> parameter defines the variant of JT9, and expects values as follows (sub mode
is actually the number of minutes duration of the transmission):
Sub mode Explanation
1
JT9-1 (most commonly used)
2
JT9-2
5
JT9-5
10
JT9-10
30
JT9-30
<frequency>
is the transmission frequency in Hz.
<message>
is the text to transmit, and may contain #-tags as explained above. JT9 messages are
a maximum of 13 characters. Remember that this is the message length AFTER any dynamic #-
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