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- #331 4 Port HF/6m Coax Relay Module (CX-1)
#331 4 Port HF/6m Coax Relay Module (CX-1)
The CX-1 Remote Coax Switch Module is designed to switch 1 radio to 4 antennas or 1 antenna to 4 radios. The intended frequency range is 1 to 60 MHz covering 160m to 6m. Performance at 2m is lower but still usable for some applications.
Maximum power rating is 100 watts.
Insertion on the HF bands is less than 0.05 dB. Port isolation is between 53 and 65 dB across the HF band.
The CX-1 uses latching relays which will leave the switch in the last position even if power is removed from the module. When switching, the current connection is released for 500ms than the new connection is made. ("Break before make")
The built in firmware prevents any two relays from being active at the same time. All relays, however may be put into the disconnected state.
The terminal block on the top of the module also provides 4 momentary pull to ground inputs to allow the use of external mechanical pushbuttons or electronic switching to select the active port.
Multiple coax switch boards can be used together to switch more antennas or radios. A common configuration might be two modules with the common port bridged allowing the selection of 4 radios to 4 antennas, one pair at a time.