I have been building some headphone adaptor interface boxes for the EFJ 5330 Series.
It came from the need to have a headphone for CAP mission radio operations.
I have some of them listed on Ebay if anyone is interested.
http://shop.ebay.com/jkbloomington/m.ht ... rom=&_ipg=
There are 2 types:
One with the DC cord built in. It has a fuse holder, DC cord to mate directly to the EFJ (5300 50 watt models), 2 headphone jacks, an external speaker jack and a switch to select the internal or external output.
The other model is the quick install. It is designed to drop into an existing working station.
It has same features as above minus the DC cord. Just insert the unit in between the 8-Pin acc plugs and you are done.
No wiring needed. It has a male and female 8-pin accessory plug right on the box for easy install.
I just got tired of dealing with 3 EFJ 5300 all on at a once and decided to build some interface boxes.
Let me know what you think,
Jim Kapphahn PCR-CA-151
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