How can electronic devices be protected from radio interference?

[WolfBox]

What electronic devices do you bring when you off-roading/camping/hunting?
Do you have any practical ways of protecting electronic devices from being intervened by high frequency radio? It would be much appreciated. Thanks.

 

[AWo]

Is it a device intended for a car?

AWo

 

[NQ94]

Assuming the radio has high transmitting power. Some of the methods we used was to give a fused direct power and earth back to the battery and keep the radio connections completely separate to the accessory power for other items in the car, use a relay switched by ignition if required. Using a shielded power supply wire can help. With the antenna cable try keep it separate from any harness with twisted pairs of wires, these are data wires and some high powered transmitters can corrupt CANBus signals and give difficult to diagnose faults.

 

[Korg]

Assuming the radio has high transmitting power. Some of the methods we used was to give a fused direct power and earth back to the battery and keep the radio connections completely separate to the accessory power for other items in the car, use a relay switched by ignition if required. Using a shielded power supply wire can help. With the antenna cable try keep it separate from any harness with twisted pairs of wires, these are data wires and some high powered transmitters can corrupt CANBus signals and give difficult to diagnose faults.

Also make sure not to have coiled cables and also make sure that your UHF arial is matched its' mounting base in respects of whether it is terminated or not. Also avoid cross over of power leads with arial leads and any parallel runs of both togther to be kept to a minimum. If need to cross over, try to do it at 90 degrees. For power leads sometimes ferrite ring magnets can be added to reduce interference. I am no expert by any means and others can correct the above advice if they know better, but this has served me well over the years.