General Amateur Radio Exam part 5. Volunteer Examiners, good operator practices. Reactance demonstration.
Antenna
An Intro and Antennas – Nuts and Volts Magazine
An Intro and Antennas – Nuts and Volts Magazine by H. Ward Silver Read Full Article: Read more
SteppIR DB11 Yagi Antenna ( 6 m to 20 m )
DB11 Yagi Antenna With the DB11, you don’t have to give up performance to fit the antenna into a small space! The DB11 is the smallest of our Y... Read more
Wire log periodic HF antennas – LP 1530-W
See More :http://www.antenna.it/index.htm Read more
Multi-Function Portable Antenna System for 2m
Features Super-fast deployment – takes less than a minute! Great performance from a full-size dipole element Great flexibility for mounting and... Read more
Equipment
Audio Amplied Speaker Microphone designed for the Elecraft KX 2 and KX3 transceivers
Elecraft radios have acheived excellence in quality and design for the fast growing market of QRP Portable Operators. The AlexMic is a Audio Amplied S... Read more
Little Boy — An LDMOS HF Amplifier
Little Boy — AN LDMOS HF Amplifier by W6KANI recently watched the movie Fat Man and Little Boy, a 1989 great movie about the Manhattan project a... Read more
TARGETuner Mobile Antenna Management System
Description TARGETuner Mobile Antenna Management System provides a controller with intelligent automatic controls for the tunable mobile screwd... Read more
Ultra Wide-band Coverage SDR Receiver MK3
Ultra Wide-band Coverage SDR Receiver MK3 • Full coverage reception form 100KHz to 2GHz SDR • Independent antenna inputs for Shortwave and VHF • USB c... Read more
VHF
Announcing the TYT MD-UV380 Dual Band DMR Radio
“We received an announcement from TYT last night that a new DMR radio will be coming soon. We haven’t received a lot of details, but it lo... Read more
Anytone AT-D878UV Dual Band DMR HT with APRS
Anytone AT-D878UV Dual Band DMR HT with APRS “Brand new from Anytone is the new AT-D878UV Dual Band DMR HT with APRS. This is the first r... Read more
AnyTone AT-D868UV dual-band VHF and UHF DMR portable
AnyTone AT-D868UV Today, Qixiang Electron Science & Technology Co., Ltd, the Chinese manufacturer that produces the AnyTone line of two-way... Read more
Two Repeaters One Antenna Feed Line
“We had an opportunity recently to provide a unique duplexer system. The customer needed a single antenna feed line for two repeaters. This solu... Read more
Review
![ELAD Products DUO-ART & SP1 [ Video ]](https://qrznow.com/wp-content/uploads/2017/10/duo_art-190x122.jpg)
ELAD Products DUO-ART & SP1 [ Video ]
DUO-ART & SP1 Read more
From the Array Solutions Lab: OM Power 2500A amplifier Selecting Antennas and Filters
Showing how the OM-Power Automatic amplifiers like the OM-2500A, OM-4000A, can control the selection of up to ten antennas driving an antenna switch a... Read more
How to measure current
It is often necessary to know how to measure current using a multimeter. Current measurements are easy to make, but they are done in a slightly differ... Read more
![MFJ Extends its Cobweb Antenna to 40 Meters [ Review ]](https://qrznow.com/wp-content/uploads/2018/01/MFJ-1835_2204-190x122.jpg)
MFJ Extends its Cobweb Antenna to 40 Meters [ Review ]
Ask Dave 71 reviews the MFJ cobweb antenna, covering 20 through 10 meters. MFJ recently came out with a modification kit, adding 30 and 40 meters. Thi... Read more
Digital Modes
FT8 Performance Secrets
“Neil investigates what really matters when you are aiming for the ultimate performance with FT8 and other digital modes. He demonstrates and ex... Read more
STEVE ANDREW’S SPECTRUM ANALYSER SOFTWARE
“We are pleased to announce the availability of V1.0a of the Spectrum Analyser software developed by Steve Andrew specifically for the RSP line... Read more
FT8 – Tipping Point for Ham Radio?
This is a view from NASA of the sun today, October 9, 2018, and I am making 10m DX contacts one after another. Zero sunspots but working DX on... Read more
JS8Call 0.9 Release notes
“Hi Folks, Thanks for staying patient with me on this one. Build servers were being weird today! Happy to bring you release with simple features... Read more
