Technical
Projects Page
If
you have a technical project or idea to share, email the Webmaster with
the write-up and any schematics, photos, etc.
Antenna Pre-amp Power
Sequencer Protection Circuit, By John, KD7DO
How to build
a G5RV 3.5MHz - 28MHz antenna, by Charles, K4AFN (this is a 2MB PDF
file)
Constructing inexpensive sound
card interfaces, by Charles,
K4AFN (PDF)
These
three circuits interface your transceiver audio in, audio out, and
press-to-talk with your computer.
"I
have built several of these and they work just fine. I have used them
on HF tube tranceivers (HW-101), Yaseu and Icom HF rigs, VHF mobiles
and HTs."
Portable Dual Band Antenna,
by Charles, K4AFN (1.2MB PDF file)
Page updated 09 Mar 2009