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)
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The BLA 600 is a wideband compact, fully automatic 500W wideband linear amplifier for the HF bands and 6m, from 1.8 to 54 MHz. Totally ideal for runni... Read more
A major flare on the sun has “ionized the top of the Earth’s atmosphere” triggering a low frequency radio blackout over portions of... Read more
Organized ByBulgarian Federation of Radio Amateurs Date and periodThe weekend before the last full weekend of November (the weekend before CQWW CW con... Read more
Radio ham finds signal from ‘dead’ NASA satellite Scott Tilley VE7TIL / VA7LF discovered a signal from the IMAGE satellite that NASA lost... Read more
In March the 434 MHz and APRS balloon UBSEDS14 flew around the northern hemisphere. On Saturday, April 30 a new balloon UBSEDS15 will be launched by t... Read more
URE, Unión Radioaficionados Españoles, has published a statement questioning the authenticity of the P5/3Z9DX operation STATEMENT Mr. Dominik T... Read more
Yagi in a bag’: Portable 3 element 6 band Beam for 20, 15, 17, 12, 10 and 6m. Installed YP-3 AntenneZoom The YP-3 is a portable yagi for operati... Read more
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App - Mobile
My LoTW – Free app for iOS and Android
My LoTW is a viewer app for ARRL’s Logbook of the World. With My LoTW, you can: – View all the QSOs you have submitted to LoTW. –... Read more
HF Beam Antenna Calculator for Iphone and Ipad
Antenna Calculator The Maidenhead & HF Beam Antenna is a useful utility to calculate the the Maidenhead LOCATION as well as HF Elements’ s... Read more
HamSphere 4.0 Mobile APP
HamSphere 4.0 Mobile is a virtual portable Ham Radio transceiver for Shortwave, VHF and UHF bands. Talk with thousands of Ham Radio operators around t... Read more
MagicSDR – A NEW ANDROID AND IOS RTL_TCP CLIENT
MagicSDR makes it possible to interactively explore RF spectrum using panadapter and waterfall visualization, demodulate and play AM, SSB, CW, NFM, WF... Read more
SDR Receiver for IOS version 1.2.1 has been released
SDR Receiver demodulates and plays AM and FM signals received by an RTL-SDR, Airspy HF+ or SDRplay radio. Requires a radio and a host comput... Read more
Equipment
Introducing QCX-mini 5W CW transceiver!
The miniature version of our popular QCX 5W CW transceiver, with special portable-friendly features for SOTA and other portable operators: – Sma... Read more
Coax Cable Stripping Tools
Coax Cable Stripping Tools DX Engineering DXE-UT-8213LR Coax Cable Stripping Tools have been designed to properly prepare coaxial cable for use... Read more
Colibri DDC SDR SDR (Software Defined Radio) HF / 6m
ColibriDDC Receiver: This small-size receiver is intended to receive signals covering the HF frequency band 0.09MHz to 55MHz, and also (wit... Read more
Xiegu G90 HF 20W SDR Transceiver
Xiegu G90 is a portable 20W HF amateur radio transceiver with an SDR architecture and built-in automatic antenna tuner. The display unit and the radio... Read more
![ICOM IC-705 [New]](https://qrznow.com/wp-content/uploads/2019/08/705-1068x601-190x122.jpg)
ICOM IC-705 [New]
ICOM IC-705 IC-705 has just been unveiled by Icom at the Tokyo Ham Fair. This is a portable HF/VHF/UHF transceiver featuring SDR technology, internal... Read more
News
Canada Funds Amateur Radio Disaster Assistance Project in Saint Lucia
The Government of Canada will provide more than $25,000 (CDN) to the Saint Lucia Amateur Radio Club to improve Amateur Radio coverage and commu... Read more
Anti Climb Devices
Anti Climb Devices Full panel or mesh panel anti-climb devices can be padlocked for easy ladder access for authorised personnel only. All anti-climb d... Read more
New ICOM 7300 – PRICE ?
IC-7300 tax selling price ¥ 128,000! Reservations accepted start! If CQ ohm Read more
HuskySat-1 with 145/435 transponder to deploy from Cygnus
ARRL reports University of Washington’s HuskySat-1 3U CubeSat, launched November 2, 2019, is set to deploy January 31 after the vehicle that carried i... Read more
Yaesu USA update Feb. 1st, 2019
Update on our current specials through April 30th, 2019; a renewal of a program, Hamcation news for Yaesu, and other items. Read more
Software
KiwiSDR update brings integrated DRM RX
Software update brings integrated DRM receiver (Digital Radio Mondiale) based on Dream 2.1.1 to all KiwiSDRs. Stock BeagleBone-Green/Black based Kiwis... Read more
JTDX-2.0.1-rc115
JTDX-2.0.1-rc115 JTDX 2.0.1-rc115 FT8v2 for evaluation and on air tests 19th December, this rc has only basic FT8v2 decoding function currently an... Read more
New version of DX Monitor
Beta test versions of DX Monitor may be used for up to 30 days from their release date and will run even if your trial period has expired. If you trie... Read more
N6XI presentation to NCCC featuring the N1MM+ Spectrum Display
“N6XI made a presentation to NCCC featuring the N1MM+ Spectrum Display. It covers why you would want to use a spectrum display and why it is bet... Read more
SDRuno v1.32 release !
“We are pleased to announce the release of v1.32 of SDRuno. The purpose of this release is primarily to add MRC Diversity functionality for the... Read more
![FO0AAA Clipperton Island DXpedition [ Video ]](https://qrznow.com/wp-content/uploads/2015/03/fo0aaa-265x168.jpg)
