Re: Radio interference
Posted: Mon Oct 31, 2016 11:29 pm
I ran two shielded wires to the DPST switch (one from each magnetron). Attach the braids and center conductors to the switch such that the switch will control two separate circuits. Attach the braid and center conductor to the magnetron body and p lead terminal.
I crimped the shield the same as I did the center conductor and used heat shrink tubing for extra support.
This will probably work fine, but having a good dedicated ground connection between the magnetron body and the engine is probably a good idea since the spark jumps to the engine block and has to make its way back to the magnetron body to complete the circuit, jumping over potentially bad connections all the way. Mine seems to have grounded fine through the accessory plate without a dedicated ground wire to each magnetron (verified with an ohm meter), but that might not be the best practice.
If you're using a shielded wire, there's no reason to attach it to ground anywhere in the cockpit. The instructions show it that way because they use the airframe ground to complete a circuit that you are already completing with the shield.
I crimped the shield the same as I did the center conductor and used heat shrink tubing for extra support.
This will probably work fine, but having a good dedicated ground connection between the magnetron body and the engine is probably a good idea since the spark jumps to the engine block and has to make its way back to the magnetron body to complete the circuit, jumping over potentially bad connections all the way. Mine seems to have grounded fine through the accessory plate without a dedicated ground wire to each magnetron (verified with an ohm meter), but that might not be the best practice.
If you're using a shielded wire, there's no reason to attach it to ground anywhere in the cockpit. The instructions show it that way because they use the airframe ground to complete a circuit that you are already completing with the shield.