sBitx
“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.
Antenna
![Ground Plane Antennas [ “ARRL The Doctor is In” podcast ]](https://i0.wp.com/www.nerfd.net/wp-content/uploads/2022/08/a-ground-plane-antenna-for-noaa-weather-stations-265x168-1.jpg?w=635&ssl=1)
Ground Plane Antennas [ “ARRL The Doctor is In” podcast ]
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
80 Meter Dipole Install via Drone
Installing my 80 Meter Dipole with my DJI Mavic was probably not the smartest thing I’ve ever done but hey, it’s me we’re talking ab… Read more
All-Band 80-10 Meter End-Fed Half-wave Antennas – MFJ 1982,1984
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
20M Vertical Dipole – Amazing Performance – T2LT Design
Here we take a look at building a simple 20M Vertical Dipole purely from RG58 Coax. Read more
Can Adding a Metal Mast Disrupt an Antenna?
“Stacy Pharis, KI5MIT, has a homebrew antenna very similar in concept to the DX Commander, all held up by a tree. She wants to know if using a m… Read more
Coil-loaded 40/80 Meter Inverted V Dipole Antenna by KG0ZZ
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
IS THIS THE ULTIMATE 2M CONTEST ARRAY?
2 x el G0KSC / InnovAntennas rigid quads with additional parasitic reflector. 16.64dBi/14.48dBd when placed 20′ (5m) above average ground with m… Read more
![Overview of the Chameleon MPAS 2.0 [ 6M – 160M ]](https://i0.wp.com/www.nerfd.net/wp-content/uploads/2022/08/rsw_1200h_1200-265x168-1.jpeg?w=635&ssl=1)
Overview of the Chameleon MPAS 2.0 [ 6M – 160M ]
Use the Ideal NOALOX 4 oz. Anti-Oxidant Compound to improve the efficiency of aluminum conductor connections. This compound provides additional inner-… Read more
Review
Wouxun REVEALS the KG-1000G
“Today we get to look at a brand new Mobile GMRS Radio from Wouxun, the KG-1000G. This Mobile radio has some nice features that make it a conten… Read more
TenTec 506 Rebel Transceiver – ARRL – QST Magazine
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
![SDR Transceiver MB1 [ Videos ]](https://i0.wp.com/www.nerfd.net/wp-content/uploads/2022/08/MB1_1-1024-265x168-1.jpg?w=635&ssl=1)
Rigexpert Antenna Analyzers Comparison, Choosing The Right Analyzer For Your Ham Radio Antenna
“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
COMPLETE IC-7851 TEST REPORT NOW ON-LINE BY ADAM, VA7OJ/AB4OJ
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 – PGXL [ VIDEO ]](https://i0.wp.com/www.nerfd.net/wp-content/uploads/2022/08/PGXL2-265x168-1.png?w=635&ssl=1)
Flex Radio’s Power Genius HF Amplifier – PGXL [ VIDEO ]
Flex Radio’s Power Genius – HF Amplifier Read more
The TAK-Tenna Review – A Limited Space HF Antenna
“As you may know, a big percentage of this web site is dedicated to building antennas and not buying them, but sometimes an antenna comes along… Read more
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