Hot on the heels of the last post about the 5400km TEP opening on 144 MHz between Argentina and the island of Aruba, we have details of some more contacts that reached in excess of 6000kms! David Lama, HI8DL reports that on the night of the 29th of November 2020, both he and Edgar, HI8PLE […] Read more

Specifications GENERAL Frequency Range VHF:144-148MHz UHF: 430~440MHz Number of Channels 200 channels Channel Spacing 25K (Wide Band) 20K(Middle Band) 12.5K (Narrow band) Phase-locked Step 2.5KHz, 5KHz, 6.25KHz, 10KHz, 12.5KHz, 20KHz,    25KHz, 30KHz, 50KHz Operating Voltage 13.8V DC ±15% Squelch Carrier/CTCSS/DCS Frequency Stability ±2.5 ppm Operating Temperature -20℃~+60℃ Dimensions(mm) 124 (W) x 163(D) x 39 […] Read more

In comments to the FCC, ARRL has argued that radio amateurs be allowed to continue shared operation in the 3.4 GHz band until 5G licensees who purchase the spectrum when the FCC puts it up for auction initiate incompatible operations. In its Further Notice of Proposed Rulemaking (FNPRM) in WT Docket 19-348, the FCC had proposed to […] Read more

Every now and then, a really special antenna system gets installed and usually it is a result of desire, commitment and dedication of the station owner. Kari, OH2BC is one of these guys. Several years ago, Kari installed 8 x 18el X-pols (9v/9h) for 144.146MHz . Impressed by their stability and being able to use them in […] Read more

On the 16th of October 2020, there was a remarkable 3000+ km contact made on the 70cms band between South Africa and St.Helena in the South Atlantic. The contact at 433 MHz was made between Garry, ZD7GWM on St.Helena Island and Tom, ZS1TA in South Africa. The distance was approximately 3136 kms and what was even more amazing was that the contact was made on FM! The power used for the […] Read more

The BF-F8+ is the first UV-5R radio to get a full internal upgrade.It has the updated internal components of the GT-3 but also full backward compatibility with UV-5R batteries and accessories.The BF-F8+ has an expanded frequency range and stronger antenna like the UV-82, but the new RDA1846S RF IC is also implemented to enhance its anti-interference […] Read more

14th Edition Edited by Mike Browne, G3DIH This new edition of the RSGB Radio Communication Handbook has as always been updated and re-written so that it remains one of the best guides in the world to amateur radio technology and practice. In 26 chapters, two appendices, 600,000 words on 832 A4 pages it covers the […] Read more

The IP730D series is an innovative hybrid IP radio with licensed professional radio mode for local and nationwide communications. Read more

A balloon experiment by Warsaw University of Technology is planned to lift off on September 12, carrying a unique very-low-frequency (VLF) 210-meter long fully-airborne antenna system, and a transmitter on 14.2 kHz — the former frequency of the Babice transatlantic radio station in Poland. The project is to gather data for a doctoral dissertation, and […] Read more

https://www.youtube.com/watch?v=O_0sqZIjiCc Read more