Grad student Kristina Collins, KD8OXT, in Cleveland, Ohio, is looking for radio amateurs and shortwave listeners — particularly in Africa and Asia — to help her collect data for an experiment. On June 21, an annular solar eclipse will cross eastern Africa and Asia, affecting the ionosphere and, in turn, radio propagation. “We’re interested in having amateur radio operators around the path of totality collect Doppler shift data on that day, which can be performed using an HF rig connected to a computer running fldigi,” she said.
Details of the experiment are on the HamSCI website. Two data-collection exercises will take place, starting with a control day on June 14 UTC followed by the event on June 20 – 22 UTC, which encompasses the annular solar eclipse across eastern Africa and Asia on June 21.
Interested operators may sign up online or contact Kristina Collins directly.
Source:ARRL
Antenna
Gizmotchy Beam Antenna
The Gizmotchy® high performance horizontal and vertical beam antenna traces its roots back to the early dawn of CB history. The Gizmotchy® antenna st... Read more
8.5 DB gain for less than $40.00 – 50MHz Yagi
by W3GAS The Yagi is one of the simplest directional antennas you can build today. There are no moving parts, and the Yagi can be matched to 50 OHM v... Read more
Building Coaxial Cable Traps by W8WWV
“ “Introduction This page describes the design and construction materials I used to build a coaxial cable trap. A coaxial cable tr... Read more
OptiBeam OB17-4 17 Element 4 Band
4 big monobanders on 1 boom, no traps !!! 3el on 40m / 4el on 20m / 4el wide spaced on 15m / 6el on 10m OptiBeam OB17-4 17 Element, 4... Read more
CUSHCRAFT SR-5 – 5-BD, 9EL, 10/12/15/17/20 M, 5KW
The SR-5 – A 9 element multi-Band HF 5 Band Super-compact Yagi covering 20m/17m/15m/12m/10m bands with a single feed point The SR-5 has been red... Read more
VHF
Yaesu REVEALS the FTM-6000R Dual Band Mobile Ham Radio
Brand new from YAesu, dropping in October of 2021, is a new dual band Ham Radio, the FTM-6000r. This was announced today, so I wanted to get some rese... Read more
Yaesu FTM-7250DR – Overview – Features – Specification
Yaesu FTM-7250DR C4FM/FM 50W 144/ 430MHz Digital AMS The new Yaesu FTM-7250DR is a compact and ruggedly built C4FM/FM 144/430MHz Dual Band 50W Transc... Read more
Portable Repeater Controller
This microprocessor-based Portable Repeater Controller was designed to quickly build a fully functional repeater ‘in the field’ in less th... Read more
Promotion video of ICOM IP730D/IP740D
The IP730D series is an innovative hybrid IP radio with licensed professional radio mode for local and nationwide communications. Read more
Juentai JT-6188 VHF/UHF
Juentai JT-6188 Product Description The JT-6188 MINI UV Dual Band Radio provides you with a reliable, clear and efficient communications servi... Read more
App - Mobile
Ham Radio License Exam Preparation for Iphone and IPad
Get Your Ham Radio License You are only 35 questions away from getting your Ham radio license. The questions come from a pool of questions publ... Read more
New APP for digital QST
Apple has released a new app for digital QST (version 5.1) readers that use that platform. A long-standing problem involved the inability of some Appl... Read more
EchoLink for iOS version 2.2 is now available
Photo:K5TRA EchoLink for iOS version 2.2 is now available in the App Store. This is a 64-bit build that is fully compatible with iOS 10 and modern iOS... Read more
APRSdroid – APRS for Android
What is APRSdroid? APRSdroid is an Android application for Amateur Radio operators. It allows reporting your position to the APRS (Autom... Read more
News
Mysterious Radio Signal Discovered in Milky Way Center | What Is It!?
Ziteng (Andy) Wang is a PhD student at the University of Sydney. He recently discovered an unusual radio signal coming from the direction of the Milky... Read more
TRI BAND TRANSCEIVER – RS-UV3A
The HobbyPCB RS-UV3A radio module is a 144/220/450 MHz FM transceiver board. The RS-UV3A is a low cost transceiver solution for Packet Radio, repeater... Read more
ARRL Continues Its Efforts to Preserve Amateur Radio Secondary Use of the 3 GHz Band
ARRL President Rick Roderick, K5UR, in a written statement on the newly filed H.R.5378 before the US House Commerce Communications and Technology Subc... Read more
![Why Ham Radio [ ARRL Video ]](https://qrznow.com/wp-content/uploads/2021/10/hq720-1-265x168.jpg)
Why Ham Radio [ ARRL Video ]
Josh Nass, KI6NAZ, of @Ham Radio Crash Course talks about what ham radio is, and answers the question…. “Why Ham Radio?” Read more
High Speed Telegraphy 2021 in Montenegro
September 10-14, 2021, the 17th World Championship High Speed Telegraphy was held in Montenegro. The event was organized by MARP (Montenegrin Amateur... Read more
