Antenna switch 6-to-2 MK2 Classic manual

This is 6-to-2 (six-2-two) RF switch designed for SO2R operation. Version MK2 have got higher isolation and new hazard protection board. There is still First-Win switching and added BCD inputs. Unused ANT ports are connected to ground. Switch can handle more than 3 kW of the RF power. Do not forget to Hot Switch Protection.

Applications

- SO2R antenna switch (2 TRX to 6 ANT)
- BPF switch for 2 TRX
- 6 TRX to 2 antennas

version with PL SO-239 connectors

version with N connectors

Example for 2 TRX and 6 antennas

Example for Band Pass Filters switching for 2 TRX

Switch Control - Connection

- It is possible to use connectors A - IN 1-6, B - IN 1-6 for conventional control over 2x6 wires (+ GND). The switch is controlled by + DC voltage > 12 V
- You can also use the BCD inputs A - BCD IN and B - BCD IN
- The switch uses binary combinations for 1 to 6. Again + DC voltage
- The BCD control has a voltage range from 3 V to 15 V. It is therefore compatible with TTL logic
- If you use TTL logic, it is necessary to connect also voltage for relay control - terminal +12 at BCD. The recommended voltage is 13.8 V. It is possible to supply this voltage separately for the A and B part. If the jumper (+12V A/B | AB) is switched to the A/B position, each half of the switch needs its own voltage (+12V at BCD). In this case, the part not in use may be without power. In the AB position, only one power supply to one of the +12 at the BCD connector is needed.
- If the BCD control voltage is higher than +13 V (13 to 15 V DC), you can use only the BCD + GND wires. The voltage for the relay is derived from the BCD control voltage.

Control connectors

BCD control examples

When you use device with Open Collector:
- You have to add Pull Up resistors 4k7, 0.25 W from + 12 V DC (12-15 V)
- Or smaller 1k when you use + 5 V for Pull Ups