“BASIC-S” Single Channel Duplex Controller

The Basic-s is a blending of the Linker IIs and the original “Basic” controller with refreshed audio paths and simplified radio interfacing options, including moving to the standardized DB-9 pinout.

The processor chip is the same as the Linker IIa/Linker IIs so configurations will remain familiar to existing Linker IIa users.

In late 2025 the original “Basic” will be obsoleted, we recommend migrating to the “Basic-s” with all current needs for long term support.

• Uses the ICS operating system
• Values entered in volts, seconds, WPM (Even Fractional Values)
• Uses More, Good, Bad, indications when programming in values and parameters
• All programmable data stored in on-board EEPROM
• 40 functions available DTMF Control System DTMF for programming and control 20 DTMF programmable code / Function memories
• Each DTMF code can be programmed to be from 1 to 5 digits
• Has DTMF muting (can be disabled) In programming mode
• all functions can be entered in directly

Setup mode (programming mode)

• Control op mode and User mode
• Electronic Control System
• Low rolloff <50hz
• Beacon mode
• Discriminator or straight through audio
• Five high quality pots (Bourns) for level adjustments
• Five LED’s for system status indication
• Built in Watchdog timer
• CTCSS and COS Full control receiver port, COS, audio and has priority COS only, CTCSS only, AND, OR functions available on the repeater port
• Easy jumper selectable active high/active low COS and CTCSS inputs

Other information

• Manual with Schematic (available on under the “DOCS” section of the top menu banner)
• Small footprint of 3.2″ x 3.5″ (not including DSUB connectors overhang)
• Large ground plane on board for quiet audio and RFI protection