A clone of the PAR EF-20 end fed antenna matchbox under construction at the W0QL radio ranch. This kit is a prototype from the Colorado QRP Club which the club is thinking about selling. It would be a fundraising project for the club.
What we’re doing here is building from a kit of parts to make a matching network that emulates the matching network that comes with the EF-20. The kit consists of a toroid and three pieces of wire, plus the box and hardware. We don’t really know what’s in the EF-20 matchbox because it’s sealed in epoxy. It’s potted and we can’t see the components without ruining it. I’ll post some results once I have it up and working.