This video illustrates how RF (radio frequency) standing waves are created in transmission lines – through the addition of the forward (transmitted) wave and the reflected wave that results from improperly terminating the line or matching the load or antenna to the transmission line impedance. I have done several videos that relate to transmission lines, terminations and reflections – all of which tell a piece of the story. This video is another piece, and I hope it helps you to understand how standing waves are formed and what the “look” like. This wikipedia link has some great graphics (shown in video)
See More: Link
MFJ VNA Antenna Analyzer covers 1 to 230 MHz, 1Hz resolution.•Frequency sweep plots: SWR, Impedance, Resistance, Reactance,Phase Angle, Complex Return... Read more
Morse Tutor In a recent conversation with my good friend Lewis, we started discussing Morse code, training and the old equipment that was used to educ... Read more
USA Source´s : ARRL , AH0A , N7QMT ,HAM CALL , WikiPedia Read more
The WORLD RADIO DAY (13 February 2018) From 13 to 20 February 2018 Special event station 4U0R will be active on HF by CW / SSB from Vienna Internation... Read more
“Introducing the Yaesu FT-891! My new portable HF Transceiver for Ham Radio! The FT-891 is a 100w rig for HF-6m at just shy over 4 lbs. A super... Read more
ARRL is accepting applications for summer 2017 Teachers Institute on Wireless Technology sessions until May 1. This summer’s sessions will be held in... Read more
Download NASA Sounds Here’s a collection of NASA sounds from historic spaceflights and current missions. You can hear the roar of a space shuttl... Read more
Recent Posts
MFJ-226 – 1-230 MHZ ANTENNA EXPECT TIMES GRAPHIC ANALYZER
Arduino Morse Tutor by Dan MØTGN
HOW MANY HAMS? Demographics
4U0R – The World Radio Day
Yaesu FT-891 Initial Impressions
ARRL 2017 Teachers Institutes on Wireless Technology Accepting Applications Until May 1
Amateur Radio Ringtone from NASA
App - Mobile
Morse Intercom – APP
Features:i) Send Morse to, and receive Morse from, other users of the app. Restrict usage to your WiFi network, or allow full Internet connecti... Read more
SmartSDR for iOS v1.0.4 Now Available
FlexRadio Systems announces the release of SmartSDR for iOS v1.0.4 is now available for download or update from the Apple App Store. This release con... Read more
Free Digital Mode Android App
First Formal Release of AndFLMSG! AndFLMSG is a combination of Fldigi and Flmsg for portable devices running Android. The main objective of this devel... Read more
817 Companion for Yeasu 817 – App
Yeasu 817 The 817 Companion app is dedicated to all the proud owners and users of the Yeasu 817 amateur radio. The Yeasu 817 is a fantastic radio bu... Read more
RFinder – The World Wide Repeater Directory kicks BrandMeister up a notch. DMR without CodePlugs!
RFinder has worked with the DMR network Brandmeister to create new usability enhancements. The new dashboard just released includes coverage maps gene... Read more
Equipment
HARDROCK-50 ATU Kit
HARDROCK-50 ATU Kit Additional functions: 60M band coverage. The ATU has a 60M lowpass filter which provides sufficient attenuation of harmonic... Read more
Alinco DX-10 10 Meter All Mode Mobile
Alinco DX-10 Technician or Extra Class, Alinco’s DX-10 All-Mode 10 Meter Transceivers let you find the excitement on the highest HF ba... Read more
Multitalent QUADRO – Cutting – insulation stripping – twisting – crimping.
The unmatched integration of four different functions: Cutting – insulation stripping – twisting – crimping. The quick reloading of connector sleeves... Read more
![ColibriNANO Direct Sampling HF/6M receiver [ User Manual ]](https://qrznow.com/wp-content/uploads/2017/06/colibri_nan0_sdr11-190x122.jpg)
News
Massive solar storm would pose considerable dangers – are we ready?
by Anthony Wood Across the globe, the scientific community and governmental bodies are preparing for the threat posed by the potential of a massive ge... Read more
Ham radio a lasting technology, hobby
By Scott Cousins – For the Telegraph COLLINSVILLE — When everything else fails, ham radio operators will still be there. For many amateur... Read more
HamCation 2015
February 13,14,15 Central Florida Fairgrounds 4603 West Colonial Drive Orlando, Florida 32808 HamCation® requires year round effort by the Chairman an... Read more
A Quadrifilar Helix Antenna for 137 MHz by KF4CPJ
“After I became a licensed amateur radio operator in August of 1995, I received a QST magazine which had an article that explained it was possib... Read more
Celebrating YOTA 2017 in the UK
“The RSGB was proud to host YOTA 2017 at Gilwell Park in August. We welcomed 80 young people under the age of 26 from 27 countries — from all ov... Read more
Software
Plans for WSJT-X Version 2.0
“This white paper describes a number of important enhancements planned for WSJT-X Version 2.0. Most of them involve the FT8 and MSK144 protocols... Read more
New Beta Version of WSJT-X is Now Available, Mock FT8 Contest Set
WSJT-X A new WSJT-X “release candidate,” version 2.0.0-rc4, now is available, and the version 2.0 Quick Start Guide has been revised and extended. The... Read more
JTAlert is available – Download
JTAlert This release is available in two builds, the traditional build (menus and band activity displayed on the titlebar) plus a new “Alternate... Read more
HamCAP HF propagation prediction tool for Amateur Radio
HF propagation prediction tool for Amateur Radio System Requirements Hardware: 600 MHz Pentium II CPU; 64 Mb RAM; 16-bit or 32-bit color vide... Read more
How HamSphere Works
HamSphere is a virtual Ham Radio Transceiver. Once installed, you will be able to communicate with thousands of Amateur Radio operators and Rad... Read more
