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
FX700 Vector Network Analyzer
Metropwr FX700 is a vector network analyzer 0.1/700 MHz used to measure all the parameters of an antenna. It has a large 4.3 “touch screen display and... Read more
Antennas Vs Trees
Jeff, KD8KPT, asks about the logistics of putting antennas up in his trees. Read more
2/2 (4) element 7/10MHz Yagi (3.9m) Force12 Antennas
Force12 Antennas – A super-compact dualband 7/10MHz WARC band Yagi with single feedpoint The 4-LFAR-40/30, an Excellent super-compact Du... Read more
6-10LP5-125 – M2 Antenna – 7 and 10 MHz
The 6-10LP5–125 log periodic is a rugged, versatile performer designed for years of trouble free service. For the amateur radio operator it cove... Read more
The Air Jupiter End Fed Co-Linear Antenna
launching today The Air Jupiter End Fed Co-Linear Antenna! Here’s a video, 150watts, VSWR 1:3:1, Details to Follow 73’s Tom #HamRadio #SOTA #AvGee... Read more
THE COKE LOOP Antenna by PY1AHD
“The Coke Loop is a Small Magnetic Loop Antenna tuned by a trombone-style variable capacitor made with standard soda cans. In Brazil we... Read more
Ultra-Portable Antenna Rotor System
Antenna Rotor Product Description INTRODUCTORY PRICE of $329.00 The Portable Rotation 12 Volt Ultra-Portable Rotor system, Model 12PR1A, has be... Read more
Review
The Humble Barrel Connector
The Humble Barrel Connector Read more
JIANPAI FT-UV78 [ Review ]
Here we take a look at the JIANPAI FT-UV78 Dual Band Radio with Airband Receive And Fluorescent Screen. Read more
Noise reduction in your shack – RFI
Also read This Common-Mode Chokes by Chuck Counselman, W1HIS is well worth reading. Read more
DV4home – Basic setup and menu navigation
This is the part 1 video of the DV4home, showing the basic setup and menu navigation. Read more
How Antenna Traps Work
How Antenna Traps Work Read more
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