Hi frankflyboy1,

We believe that with PCM reveivers, there is no need for chokes or filters.

As he is using two Y-harnesses, it sounds as though there is a problem in that he has many places in this configuration for problems to occur. He may want to check into using as few connections as possible, and also he may want to try using something like the Heavy Duty 40" extension FUTM4148.

I hope you find this information helpful. You can also reach our Futaba support technical team at 217-398-8970, or via fax at 217-398-7721.

Sincerely,
Krysta
Lead Futaba Customer Service and Programming Technician
Also you may want to check our Website at (http://www.futaba-rc.com)