Developed in the 1830s and 1840s by Samuel Morse (1791-1872) and other inventors, the telegraph revolutionized long-distance communication. It worked by transmitting electrical signals over a wire laid between stations. In addition to helping invent the telegraph, Samuel Morse developed a code (bearing his name) that assigned a set of dots and dashes to each letter of the English alphabet and allowed for the simple transmission of complex messages across telegraph lines. In 1844, Morse sent his first telegraph message, from Washington, D.C., to Baltimore, Maryland; by 1866, a telegraph line had been laid across the Atlantic Ocean from the U.S. to Europe. Although the telegraph had fallen out of widespread use by the start of the 21st century, replaced by the telephone, fax machine and Internet, it laid the groundwork for the communications revolution that led to those later innovations.
Equipment
New Firmware Updates for the IC-705, IC-7300 and IC-9700 SDR Transceivers
Icom has released updates for its latest range of Amateur radios. The updates are available for the IC-705, IC-7300 and IC-9700 SDR transceivers. The... Read more
EL/AZ 3D Printed Antenna Rotator – Testing !
“One of the Youtube viewers made a comment a few weeks ago asking about my rotator project. Their comment inspired me to finish it. This project... Read more
ICOM IC 7300 Ham Radio Go Box, It’s Final Form?
“The go box is portable operation ready. How did I do on the wire mangement? What is its final config? Check it out and tell me what you think.... Read more
Review
Elecraft K4 Hands-on (UK Sample)
Elecraft K4 Peter Waters G3OJV, takes a trip around the features he used when evaluating the first production sample K4 to arrive int the UK. OVERVIEW... Read more
Pl-259 vs N-Connectors is similar to Ford vs Chevy
Michael, KI7QIB, is asking a simple question “Should I replace PL-259 connectors in a feedline with N-type connectors? Read more
Astron SS-30M-AP Power Supply First Look!
New from Astron is a 30-amp Power Supply with PowerPoles and 2 USB ports on the front panel. Let’s take a First Look at this! Connectors: [... Read more
VHF
Best DMR Handheld Ham Radio for 2021 | Top 10 DMR HT Radios
What is the best DMR Handheld Ham Radio you can get in 2021, and why? Today I take you through my Top 10 choices for DMR HTs, with an honorable mentio... Read more
AO-109 (RadFxSat-2/AMSAT Fox-1E) Open for Amateur Use
AMSAT’s Engineering and Operations Teams have announced that AO-109 (RadFxSat-2/AMSAT Fox-1E) is now open for amateur use. AMSAT advises operators to... Read more
Radioddity REVEALS DB25-D Mini Mobile DMR Radio | First Look!
Radioddity has a new Mini Mobile DMR Radio about to be released which they are calling the DB-25-D. This is a small dual band DMR radio with 20W power... Read more
App - Mobile
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
STARWAVES DRM SoftRadio App for Android now available!
The STARWAVES DRM SoftRadio allows you to conveniently enjoy any DRM live radio broadcast on your Android smartphone or tablet. No Internet connection... 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
Software
SDR++ VERSION 1.0.0 RELEASED
“ After over a year of work, I’m proud to released version 1.0.0 of SDR++! For those who don’t know, SDR++ is a crossplatform (Windo... Read more
EZNEC PRO ANTENNA MODELLING SOFTWARE WILL BE FREE FROM 2022
“ On January 1, 2022 I will be retiring. I’ll be nearly 76 and want to spend more time at other things. EZNEC is and always has been devel... Read more
WSJT-X version 2.4.0 Now Generally Available, Version 2.5.0 on the Horizon
WSJT-X version 2.4.0 now is available in general release. According to co-developer Joe Taylor, K1JT, WSJT-X version 2.4.0, includes a... Read more
![SSTV Transmissions Scheduled from ISS [ August 6 – 7 ]](https://qrznow.com/wp-content/uploads/2021/08/133827-90x60.jpg)
![SSTV Transmissions Scheduled from ISS [ August 6 – 7 ]](https://qrznow.com/wp-content/uploads/2021/08/133827-180x120.jpg)
