{"id":60,"date":"2023-06-28T17:30:27","date_gmt":"2023-06-28T16:30:27","guid":{"rendered":"http:\/\/194.87.248.148\/?page_id=60"},"modified":"2025-07-07T12:23:51","modified_gmt":"2025-07-07T04:23:51","slug":"rf-relay-sequencer-4-ports-3-events","status":"publish","type":"page","link":"https:\/\/shop.ra0sms.com\/index.php\/catalog\/other-devices\/rf-relay-sequencer-4-ports-3-events\/","title":{"rendered":"RF Relay Sequencer 4 ports\/3 events"},"content":{"rendered":"

\"\"<\/a><\/p>\n

\"\"<\/a><\/p>\n

\"\"<\/a><\/p>\n

Event sequencer for proper RX to TX transmition, and the return to RX mode. This sequencer based on modern RISK-V CPU. Internal CPU clocking guarantees high precision and long-term stability, no capacitors, no external timing network, everything is digital. Sequencer has four high current MOSFET switches on output, they’re switching in 3 step (stage) with delay. Delay time can be selected by onboard jumper from two values – 15ms or 45ms. Three of MOSFET output port is “OPEN DRAIN” and “ground” active – OUT1, OUT2 and OUT3. Fourth MOSFET output port has external DC +12-30 input line (IN+) that switched ON (to OUT+ line) in TX mode and has same timing diagram as OUT3.
\nOutput ports not protected, just bare DRAINS, so – be careful, don’t forget to use diodes in parallel with relay coils.
\nSequencer can be switched to TX or RX mode by external footswitch only (active state – ground).<\/p>\n

The sequencer has two modes (choose by a jumper on the board) – PA BIAS and LNA modes.<\/p>\n

TECHNICAL SPECIFICATION:<\/strong><\/p>\n