5K Repeater Controller

Detailed Specifications

Hardware
Microprocessor	CMOS HD63B09 (MC6809-compatible).
Memory	8K Bytes non-volatile CMOS RAM; 16K Bytes CMOS EPROM.
Real-Time Clock Calendar	Keeps time even with loss-of-power.
DTMF Decoder	MT8870, full 16-digit, crystal controlled, shared by repeater and control receiver inputs.
Repeater Receiver COR Input	NPN transistor with pullup, switchable active Hi/Lo.
Control Receiver COR Input	NPN transistor with pullup, switchable active Hi/Lo.
Repeater Transmitter PTT Output	Open-drain power MOSFET, switchable active Hi/Lo.
CTCSS Decoder Input	NPN transistor with pullup, switchable active Hi/Lo.
Repeater Receiver Audio Input	70mV to 2V RMS In 2 ranges; level adjust pot.
Control Receiver Audio Input	70mV to 2V RMS In 2 ranges; level adjust pot.
Repeater Transmitter Audio Output	100mV to 1V RMS Into 600 ohms; 200mV to 2V RMS into 10K ohms; level adjust pot.
CW/Tone Generator	Sine-wave synthesizer and shaper; level adjust pot.
Logic Inputs (3)	NPN transistor with pullup.
Logic Outputs (3)	Open-drain power MOSFET; 40V 100mA.
Protective Circuits	Tranzorb suppressor and ferrite bead on power input; Transzorbs on all power MOSFETs; bypass capacitors on all external inputs and outputs.
Power Requirements	12 to 15VDC at 60mA; on-board voltage regulators.
Connectors	DB-25S input/output connector; 2.5mm DC power jack. All mating connectors supplied. ICs in machined-pin sockets.
PC Board	G10FR glass epoxy, double-sided with plated-thru holes, solder mask, silk-screened legends.
Size	PC board measures 5-13/16" D x 6" W x 1/2" H without the mating DB-25P attached.

Commands
Clock/Calendar	Set Clock/Calendar; Adjust Daylight Savings Time; Include in messages; Keeps time during power-down; Automatic Leap Year Adjustment.
Custom Tones	Set Frequency and Duration; Include in messages.
CW	Disable/Enable; Set Frequency; Set Speed.
DTMF	Disable/Enable Mute; Mute Delay; Interdigit time; Access Mode: Carrier / CTCSS / AND-CTCSS / OR-CTCSS / ANTI-CTCSS / no access.
Identifier	Initial and normal callsigns; Interval; ID Tail Message; Force ID. IDer is polite (IDs during breaks).
Logic Inputs	Name macro(s) to execute on either or both transitions.
Logic Outputs	Force output to momentary or latched states.
Macros	Create; Append; Erase; List; Rename.
Messages	Initial ID; Normal ID; Tail; Courtesy; Pre-Timeout; Post-Timeout.
Repeater Access	Carrier / CTCSS / AND-CTCSS / OR-CTCSS / ANTI-CTCSS / No Access.
Security	Name Master and Control Operator Passwords; Select priviledge levels.
Squelch/Repeater	Courtesy message and timer; Dropout message and timer; Activity monitor functions.
Test Tone	Create test tones of programmable frequency and duration.
Transmitter	Disable/enable transmitter; Key transmitter timed/untimed, Courtesy Delay, Courtesy Beep; Dropout Delay; Timeout Timer; Unkey Delay.
Utilities	Miscellaneous helpful commands.

© Copyright 2002, S-COM, LLC. All rights reserved.
Last Revised: 22 June 2002. Questions or comments regarding this Web site? Send us your e-mail.