[CQ-Contest] Multi 2 locking device?

[Fco. Luis Delgadillo]

Hola,

I'm planning to operate M2 LP, the oncoming contest season.
I do have two WX0B passbands filters from my previous SO2R setup.

-Only two radios will be used.
and
- Very simple antennas setup on a city lot:
Log periodic Cushcraft ASL-2020
Vertical tribander Force13 VR-3
Twin Slopper Alpha-delta DX-A

Is there any summary related to options available for locking devices to prevent two radios to operate in the same band?  I do not want to have burned front ends.
Preferably,  I would like to build it.

I appreciate the feedback

73

Luis XE2B


Enviado desde mi Huawei de Telcel