S-COM 7K, Manual, Page: 17 / 400

Product Description
1-3
Digital Audio Delay Module
The Digital Audio Delay Module (DADM) is constructed on a 2.1 " by 2.7 " PC
board, and removes squelch noise bursts and DTMF tone bursts from repeated
audio. As many as two DADMs may be installed in the cover of the 7K cabinet,
one each for receiver #1 and receiver #2. The DADM delays the audio from 12
to 197 milliseconds, adjustable via a dip switch.
Standard Software Features
CW Identifier
The software CW Identifier stores remotely-programmable multiple callsigns
with ID tail messages. Time between identifications is also programmable. CW
is internally mixed with repeat audio. The ID-er is
polite , and attempts to
identify during breaks between transmissions.
CW Messages and Paging Formats
Most of the CW Messages are remotely programmable. CW pitch and speed
are programmable, and can be changed within a message. The character set
includes alphanumerics, punctuation, and a large library of
“Beeps .” CW level
is set with a potentiometer.
The 7K supports the following paging formats: Single-tone (group call), two-
tone sequential, 5/6-tone, and DTMF. Pages may be stacked for convenient
call-up of ARES members, weather spotters, DX club members, on-the-air
meetings, etc.
Timers
All timers in the 7K are derived from the microprocessor's crystal-controlled
clock circuit for improved accuracy over other methods. Most timers are
remotely programmable, including:
Courtesy Delay, Dropout Delay, Transmitter
Timeout, and Autopatch Timeout .
Repeater Characteristics
The character of a repeater can be varied with choices of Courtesy Messages,
Dropout Messages, Timeout Messages , and their associated timers. The
repeater can be placed into one of several access modes, or disabled.
Repeater characteristics can be changed by either a command or a transition
on one of the logic inputs.