“The Sun keeps us waiting as a coronal hole that has rotated into the Earth-strike zone has yet to send us some fast wind. Considering this is the third time we have danced with this coronal hole, we have a good idea of what it can do. Storm levels are possible with aurora views briefly down to mid-latitudes. Issues with amateur and shortwave radio communication
Review
A simple method for Decibel power calculations. Receivers. – Ham College 51
Questions from the General Amateur Radio exam pool part 22. A simple method for Decibel power calculations. Receivers. Read more
RFinder B1 Manual Programming – RFinder Android Radio
B1 specification ◇ Radio 136-174, 400-470Mhz, FM Wide/Narrow, DMR Tier II ◇ Suitable industry: ◇ Industry Police/Security/Railway/Critical communicati... Read more
KX3 Transceiver – Product Review by ARRL
KX3 Transceiver Reviewed by Joel R. Hallas, W1ZR QST Technical Editor w1zr@arrl.org The Elecraft KX3 is a nominal 10 W HF and 6 meter transceiver inte... Read more
Equipment
RT-9000E SOFTWARE-DEFINED HF SSB/ISB RADIO
The Sunair RT-9000E is a proven solution in communications applications requiring rugged, reliable, and flexible equipment. This next generation trans... Read more
DZKit Sienna HF Receiver/Transceiver Kit
True kit – soldering required (about 40 hours to build boards, assemble, cal and test) Modular (start small, add modules as your budget allows)... Read more
Airspy advanced open-source software defined radio receiver
What is Airspy? Airspy is an advanced open-source software defined radio receiver with adequate dynamic range, capable of sampling 10MHz... Read more
Ham Radio Go Box Design
by Lee Drew “I’ve spent a lot of time over the years looking at the designs of ham radio go boxes amateur radio operators have created. T... Read more
VHF
Successful Bilateral Transatlantic 144 MHz QSO made PY and ZS
“Successful Bilateral Transatlantic 144 MHz QSO made ! Between 04 and 05 October 2016 a new record was set. PY1MHZ Marcos received in the city o... Read more
New ! BIG TAJFUN 1000 144 MHz – 1KW
Description New robust Heatsinks – Fischer. Continuous 900W DIGI-modes. Quiet fans. TAJFUN 1000 is small, lightweight but robus LDMOS Power Ampl... Read more
Yaesu FT 991 Versus Icom IC-910 in 144MHz
Yaesu FT 991 Versus Icom IC-910 in 144MHz “We compare the FT-991 receiver performance on 2m with two other radios. Justin, G0KSC, from Waters... Read more
TYT MD-9600 Dual Band DMR Digital Mobile Radio (UHF/VHF)
Now you can go digital on the road with the TYT MD-9600 DMR Digital Mobile Two Way Radio! The MD-9600 gives you the crystal clear, noise-free audio of... Read more
Antenna
Yagi Antenna 4 antenna elements 5 bands
Yagi Antenna Frequency [Frequency]: 28, 24, 21, 18, 14 MHz Number of elements [Number of elements]: 4 Profit [Gain]: 9.5 – 9.0 dBd suppressio... Read more
Heights Tower and SteppIR DB-18 Beam at N6GR (#243)
“Last month while visiting Brad Rich, N6GR, he gave me a tour of his nearly-completed 69-foot foldover tower and his SteppIR DB-18 antenna. He a... Read more
Portable Carbon Fiber Telescopic Antenna Mast With Premium Tripod, Review/Demo
Portable Carbon Fiber Telescopic Antenna Mast With Premium Tripod, Review/Demo Read more
![Antenna Fundamentals 1 Propagation [ Video ]](https://qrznow.com/wp-content/uploads/2016/06/d01645880bc21d293eab203a20ce8adf-190x122.jpg)
Digital Modes
FT8DMC 3rd Anniversary-Activity Days 2020
To commemorate our 3rd anniversary, special event stations will be on air during the FT8DMC Activity Days from 1. to 31. July 2020. All stations will... Read more
K1JT , JOE TAYLOR HINTS AT POSSIBLE NEW MODE!
In a post to the WSJT-X email group today, Joe Taylor K1JT hinted at some ongoing experimentation of a new digital mode with sub-modes. His post was a... Read more
![PALSTAR LA-1K “Red Button” 1000W HF LDMOS Amplifier [ Video ]](https://qrznow.com/wp-content/uploads/2018/03/21767935_1518083758234580_8102245014081376623_n-265x168.jpg)
