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.
VHF
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News
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App - Mobile
RUMlogNG2Go for iOS version 3.5.2 now available
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N1KDO’s LoTW Look – Android
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Antenna
New Antenna 50 and 70MHz – 4 el Moxon
EAntenna 5070MOX Only 86cm (34 inch) boom lenght with 2 elements Moxon in 4m and another 2 in 6m band. The gain is 6,03 dBi in 50 MHz. and 5,95 dBi in... Read more
New! Vertical Loop Yagi ( 6 to 40m ) – Ultra Beam
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8.5 DB gain for less than $40.00 – 50MHz Yagi
by W3GAS The Yagi is one of the simplest directional antennas you can build today. There are no moving parts, and the Yagi can be matched to 50 OHM v... Read more
Multi-Function Portable Antenna System for 2m
Features Super-fast deployment – takes less than a minute! Great performance from a full-size dipole element Great flexibility for mounting and... Read more
Antenna 1/2-wave, 5-Band HF Cobweb Antenna – MFJ-1835 Time Lapse Video
1/2-wave, 5-Band HF Cobweb Antenna Restricted space spoiling your operating fun? MFJ-1835 puts your call back on the map! This fiveband (20, 17, 15, 1... Read more
Recent Posts
New Antenna Uses Saltwater and Plastic to Steer Radio Beams
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Nevada ARES/RACES Members Deploy for “Storm Area 51” Event
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Buddipole PowerPlus | Rugged Portable DC Power Management System
DESCRIPTION Rugged Portable DC Power Management System with built-in High-Efficiency Battery Charger! > High contrast OLED display > Power manag... Read more
ARRL Renews Request for FCC to Replace Symbol Rate with Bandwidth Limit
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