The US Naval Academy has received IARU satellite frequency coordination for HFsat, a 1.5 U CubeSat with a 15- to 10-meter linear transponder with a 30 kHz bandwidth (uplink 21.4 MHz, downlink 29.42 MHz). The Mode K configuration is reminiscent of the old “RS” series of Russian satellites.
The CubeSat will also carry an APRS digipeater on 145.825 MHz. HFsat is a project to demonstrate the viability of HF satellite communications as a back-up communications system, using HF radios found in a typical Amateur Radio installation or frequently used to support disaster and emergency response communication.
“HFsat will be gravity gradient-stabilized by its full-sized 10-meter half-wave HF dipole with tip masses,” said Bob Bruninga, WB4APR.
A standardized CubeSat VHF communication card based on the popular Byonics MTT4B all-in-one APRS Tiny-Track4 module for telemetry, command, and control is under development at the US Naval Academy. US Naval Academy students are working with Bill Ress, N6GHZ, on the HF transponder card.
The RS-RP3C gateway software which is being rolled out across the globe is now available from Icom UK. The new software has significant improvements o... Read more
“I originally did this video as part of a monthly presentation for my local ham radio club. Its got some specific references to the Auburn CA cl... Read more
Retiring ARRL Connecticut Section Manager Betsey Doane, K1EIC, was honored on September 10 at the New England Division Convention in Boxboro, Massachu... Read more
The September edition of Digital QST is now available for viewing on your desktop or laptop. Click here to view the issue. It is also available for re... Read more
The MB8 15-20 SF is a fullsize antenna for 14 MHz and 21 MHz. No traps or adapting systems where used to obtain fantastic performances and the best ba... Read more
Edmund M0MNG gives a ‘first impressions’ unscripted review of a new product. The WSPRlite is available from SOTAbeams and is proving very... Read more
The Nashville Tennessean newspaper recently featured the story of a 104-year-old ARRL member who contributed to NASA’s effort to put the first humans... Read more
“Part 2 of my look at the Chameleon MPAS 2.0 Modular Portable Antenna System. I set the antenna up in the horizontal NVIS (Near Vertical Inciden... Read more