Better QRP

The EFHW tuner has been retired.  A few circuit boards remain and are available for $7 shipped.

How to make your Hendricks SOTA tuner work properly  (PDF)

EFHW Manual
   (960KB PDF)

EFHW Addendum  (HTML) <<must read!!

EFHW Enclosure  (140KB PDF)

EFHW Board Files 

 Backpacker Balun 

These baluns are perfect for portable/field operations and weigh a little more than an ounce.  Kit includes a pre-drilled plastic enclosure (3/4 x 1 1/4 x 2 1/4 inch), two gold plated binding posts, a RCA jack, two BN43-202 balun cores, and enough #24 enameled wire to wind your choice of 1:1, 4:1, or 9:1 impedance ratios.  These baluns are intended for QRP use. 
An RCA male to BNC female adaptor is included with each kit order/

Kits are $13 each shipped to US addresses.  Two kits $24, three kits $33.

Balun Assembly (HTML)








Link to ordering page