Blog

in the radio world, UHF and VHF two options can make all the difference when it comes to choosing the right radio for your specific uses. Here are a few facts about UHF and VHF radios – and how to choose between them.  ...

Do you want to QSO anywhere? If yes, the dual-band high gain telescopic antenna will be a good choice.  ...

The Radio Amateur Satellite Corporation (as AMSAT is officially known) was formed March 3, 1969 as a not-for-profit, 501(c)(3) educational organization chartered in the District of Columbia. To help celebrate 50 years of Keeping Amateur Radio in Space, AMSAT is proud to announce the AMSAT 50th Anniversary Awards Program.  ...

China Launched CAMSAT CAS-6 Satellite on December 20  ...

NFM is a narrowband frequency modulation method, which is suitable for communication signals with a channel bandwidth of 25kHz / 12.5kHz; WFM is a wideband frequency modulation method, which is suitable for receiving broadcast signals with a channel bandwidth of about 180kHz  ...

Zones are just a way to manage large number of channels, much like file folders or directories on your computer.  ...

Do you know the Yagi antenna? The yagi antenna works very well in direction finding and long-distance communication. Today we'll learn the Yagi antenna with Ailunce AY01.  ...

The ham radio equipment usually is used for emergencies, like hurricanes. Why not use it to call Santa?  ...

Retevis RT50 is a UHF DMR radio, compatible with digital and analogue mode, using TDMA technology, designed with Tier II, AMBE++ vocoder, compatible with Mototrbo protocol etc. Its exterior design is simple and generous. IP67 waterproof and dust-proof function allow you use them anywhere without worrying the surrounding environment.  ...

In the morning of Christmas Eve, December 24, we will try to start the old Alexanderson 200 kW transmitter, from 1924 and send out a Christmas message on VLF 17.2 kHz CW. The transmitter will be tuned up from around 08:30 (07:30 UTC) and a message* will be transmitted at 09:00 (08:00 UTC).  ...