“How high should a dipole be? What happens if it’s too low or too high? We turn to EZNEC antenna modeling software to see that the old rule of thumb of one half wavelength is correct. But there are lots of things going on!”
Equipment
![Icom AIR. LAND. SEA. [ Brochure ]](https://qrznow.com/wp-content/uploads/2016/09/icom_air-190x122.jpg)
857Sprint portable battery pack system designed specifically for the yaesu FT-857D
Yaesu FT-857D The 857sprint is a self contained tacticlal portable battery pack system designed specifically for the yaesu FT-857D amateur radio. (rad... Read more
BEKO HLV-1250 2 Meter RF Power Amplifier with 1,250 Watts RF output
Designed for Weak Signal, Tropo Scatter, Meteor Scatter, Digital, & Contest Operation! The BEKO HLV-1250 is a special 25th Anniversary Amplifier c... Read more
Youkits FG-01 1-72Mhz Antenna ANALYSER
FG-01 1-72Mhz Antenna ANALYSER Assembed unit, tested and ready to use, Portable design easy to carry and operating, Comes with18650 battery pack, 10 M... Read more
Review
Building an Ultra Portable Go-Box
LUITON LT-898UV Dual Band Mobile Main features: 1. Dual band: 136-174MHz/400-470MHz/245MHz (Receive only) ; 2. Dual Reception/Dual Display ; 3.... Read more
“This week I’m reviewing the Openspot by Shark RF. No images to hunt down, It runs D-Star, DMR & Fusion all in one box. Don’t fo... Read more
Kenwood TH-D74 – D-Star and Analog FM audio with EQ off / on 4K
TH-D74 “In this video, we are testing the integrated audio parametric equalizer of the Kenwood TH-D-74. In D-Star and in analog FM. Can you hear... Read more
WELLBROOK ALA1530S+ LOOP ANTENNA – Review
“I have been a keen shortwave listener since 1970 and have had many receivers and antenna types during this time. Currently I have two wire ante... Read more
Antenna
XR4: Compact 8 Element 20m/15m/10m/6m Multi-Mono Yagi
XR4 is what you get when you add 6 meter coverage to the great XR3 antenna (see above) with the same single feedline and a scarcely longer 11.5... 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
Slim Jim Antenna Project
Slim Jim Antenna The Slim Jim is a vertically polarized omnidirectional end-fed antenna having considerable “gain” and this is concentra... Read more
Elecraft AX1 Multi-Band Whip Antenna
Elecraft AX1 – Portable HF antenna Elecraft AX1 Ultraportable 17/20 Meter Antenna System (FAQ) Q: What is the AX1? A: The AX1 is a dual-band (20... Read more
App - Mobile
iWSPR TX – WSPR for iOS version 2.8 now available
WSPR WSPR implements a protocol designed for probing potential propagation paths with low-power transmissions. Normal transmissions carry a station’s... Read more
Repeater Database APP ( IOS and Android ) – Now includes over 35 countries
Repeater Database “RepeaterBook – The Free Repeater Directory for the USA and Canada. Powered by the popular community database of... Read more
Koch Morse Trainer Pro – Android App
Take your morse code to the next level with Koch Morse Trainer Pro. The only trainer that supports prosigns (procedural signals) and non-english cha... Read more
Ham radio Foundation course for iOS and Android
The Australian Radio & Electronics School (RES) has made available a free 2-3 day amateur radio Foundation licence course App for Apple and Androi... Read more
News
ANTUINO – A compact Radio Lab for Antennas, Radio circuits
What can it do? SWR The Antuino measures the SWR of the antenna with a narrowly tuned receiver. A simpler resistive bridge with a diode detector will... Read more
Access to 60 Meters Continues to Expand
According to the latest edition of The 5 MHz Newsletter, regulatory agencies in an expanding list of countries have granted amateur radio access to a... Read more
WRC-19 Day 9 and 10: Satellites, 50 MHz and 1240-1300 MHz
The RSGB have released a report on days 9 and 10 of the 2019 World Radiocommunication Conference being held in Sharm el-Sheikh, Egypt from October 28... Read more
Russian OTH Radar Contayner now everywhere
The latest IARU-R1 Monitoring System newsletter reports the Russian Over-The-Horizon Radar Contayner has been active in the 7, 10, 14 and 18 MHz amate... Read more
Two Online Competitions to win Icom Prizes!
“We have two online competitions giving you the chance to win Icom prizes. You can enter both competitions by clicking on the links below: Win a... Read more
