“The first part shows me calling CQ and handling the response. The second part shows how the operator can respond to a someone else’s CQ call.”
The idea of hybrid architecture was first implemented in this form by Bob Larkin in his
seminal work with DSP-10 transceiver. The details are in the ARRL book Experimental
Methods in RF Design and its accompanying CD. An open secret about the EMRFD is that
it is also an excellent introduction to Digital Methods and Bob is a great teacher.
I spent a rainy day in Portland with Bob discussing radio and life and that evening we were joined by Jeff Damm (WA7MLH) for an early dinner. This project was born that evening.
Ground Plane Antennas “Ground Plane Antennas” is the topic of the new (December 20) episode of the “ARRL The Doctor is In” podcast. Listen…and l… Read more
Cover all HF bands with one single wire and no tuner! to ensure great performance in a wide range of operating conditions. End-fed horizontal wire, an… Read more
Here we take a look at building a simple 20M Vertical Dipole purely from RG58 Coax. Read more
This 40 and 80 meter inverted V antenna is made with loading coils. It is a full size antenna on 40 meters and a shortened 80 meter antenna. The anten… Read more
The Rebel 506 utilizes a chipKIT Uno32 prototyping board which give users access to an Arduino based programming environment. With its 32 bit computin… Read more
“In this video is almost all the Rigexpert antenna analyzers, thanks to GigaParts.com for letting me borrow them all. I will be making some vide… Read more
IC-7851 Test Report for IC-7851 July 1 and September 21-22, 2015 by Adam Farson VA7OJ/AB4OJ (Iss. 2) The following are the results obtained from lab t… Read more
Flex Radio’s Power Genius – HF Amplifier Read more