This video answers the question – “Can an antenna switch be used in reverse, to switch multiple radios into a single antenna system and, is it safe?” The answer is – YES, in most cases – as long as the switch grounds the unused inputs, which is usually the case. The video takes a look at the numbers, describes how much isolation is needed, and then shows how to measure the isolation using a NanoVNA, and finally shows the results using a couple of HF radios.
Antenna
HF Omniangles HF-28 ( 10 Meters )
HF Omniangles Our HF line of horizontal omnis are a bit different than the VHF and UHF models in that they aren’t as excellent from an omnidirec... Read more
A Super-Duper Tiny 3D-Printed HF Radio Antenna.
A Super-Duper Tiny 3D-Printed HF Radio Antenna. Read more
Installation of New 3 El for 80 meters in LZ5R
MILARA CONTEST CLUB LZ1KFM / LZ5R Read more
Wireless Loop Antenna Amplifier
The Loop Antenna Amplifier contains all the electronics needed for home DIY construction of an active loop (magnetic loop) low noise receiving antenna... Read more
6 Meter Beam Antenna
6 Meter Beam Antenna 1.5 KW Power Handling Capacity Transmits and receives in an uni-directional (one direction) pattern Horizontal and Vertical Polar... Read more
Review
MOSFET – The Most significant invention of the 20th Century
What makes a truly world-changing invention?. Of all the inventions of the 20th century just one could be said to have changed the world in such a way... Read more
Digital Cables and Connectors we see and use in the Ham Shack
“Ken, “Digital Dorsey”, KA8OAD talks about various types of USB, HDMI and DVI cables used around the radio shack.” Read more
Yaesu FT2DR Ham Radio Review. Is it better the second time around?
“Welcome to my review of the Yaesu FT2/DR. A dual band analog fusion APRS transceiver. The first time I used this radio it was a train wreck. Le... Read more
![Tools for Every Ham [ ARRL PODCAST ]](https://qrznow.com/wp-content/uploads/2018/09/KnolledElectronicsLayered-265x168.jpg)
Tools for Every Ham [ ARRL PODCAST ]
The Doctor discusses basic tools that every amateur should have in his or her station. Read more
Equipment
Begali CW Key – The Adventure dual-lever key
Begali The Adventure dual-lever key, like its single-lever sibling, the Adventure Mono, was created to give you the finest possible keying experience... Read more
![Yaesu FTDX-101D/MP [ Brochure and Videos ]](https://qrznow.com/wp-content/uploads/2018/11/FTDX101DMP-265x168.jpg)
Yaesu FTDX-101D/MP [ Brochure and Videos ]
Yaesu FTDX-101D /MP Announced features for incredible Yaesu FTdx-101D include: * Elite-Level 160 to 6 Meters 100 Watt Transceiver * Superb and astonis... Read more
Cyclon 2.2 kW LDMOS Amplifier
“Our youngest “child”, that is the 2.2 kW version of the CYCLON. Characteristic for this version is an external controller that can... Read more
A Simple High-Frequency Communications Receiver
See What QST Has to Offer! QST is the monthly membership journal of ARRL. Each issue is your source for equipment reviews, technical tips, projects, n... Read more
