Student HRBE Amateur Radio CubeSat in SatMagazine

SatMagazine April 2012

SatMagazine April 2012

The student built Hiscock Radiation Belt Explorer (HRBE) amateur radio CubeSat formerly known as Explorer-1 [PRIME] is featured on page 10 of the April issue of SatMagazine.

In the article SatMagazine says:

The Montana State University (MSU) satellite that rode into space on a NASA rocket has now gathered information longer than the historic U.S. satellite it was built to honor, said the director of MSU’s Space Science and Engineering Laboratory (SSEL).

Almost four months after the October 28 launch, and shortly after learning that NASA had selected another MSU satellite for possible launch on a NASA rocket next year, SSEL Director David Klumpar [KD7MFJ] cheered as he suddenly realized that Montana’s only satellite had collected data for 111 days as of February 15. Since then, the satellite has well surpassed the entire 111-day mission of its history-making predecessor, Explorer-1, the first successful U.S. satellite.

On the HRBE site the team say “A special thanks goes to all of the HAM operators that have been listening into beacons and sending us the data. Data Submissions from HAM Operators have comprised of almost half of the data we have collected so far and has become a vital part in monitoring the health and systems of HRBE.”

Download the April issue of SatMagazine from


HRBE (Explorer-1 [PRIME] )

How to receive the 437.505 MHz LSB Amateur Radio Cubesat E-1P / HRBE

Amateur Radio CubeSats Launch

The Educational Launch of Nanosatellites (ELaNa) initiative took place on Friday, October 28 at 0948 UT and a number of Amateur Radio satellites were among them. The CubeSats were successfully deployed at 1129 UT. Signals have been heard from Explorer-1[Prime], RAX-2, AubieSat-1 and M-Cubed.

The ELaNa III CubeSats launched were:

Satellite: AubieSat-1
Downlink Freq: 437.475 MHz
EIRP:  0.708W
Modulation Scheme: Interrupted Continuous Wave (IWC)
Protocol: Morse Code
Baud Rate: 20wpm

Satellite: DICE (not amateur radio)
Downlink Freq: 465 MHz
EIRP: -4.51dBW
Modulation Scheme: OQPSK
Protocol: CCSDS
Baud Rate: Modulation data rate 1.5 megabit,  Actual Tx bit rate 3.0 megabit

Satellite: RAX-2
Downlink Freq: 437.345 MHz
Modulation Scheme: GMSK
Baud Rate: 9600

Satellite: M-Cubed (1)
Downlink Freq: 437.485MHz
EIRP: under 1W
Modulation Scheme: FSK
Protocol: AX.25
Baud Rate: 9600

Satellite: Explorer-1[PRIME] Flight Unit 2
Downlink Freq:  437.505 MHz LSB
EIRP: -0.7dBW
Modulation Scheme: Non-Coherent FSK
Protocol: KISS Custom
Baud Rate: 1200

Additional spacecraft information can be found on the satellite websites listed below:

The initial keps are here:

APRS Pass Predictor:

Jean-Marie KI4YAU asks Amateur Radio operators to listen out for AubieSat-1, on 437.475 MHz CW. He says

We fervently request your assistance in receiving transmissions from an upcoming satellite, AubieSat-1, immediately after its launch from Vandenberg AFB, California, USA. AubieSat-1 (AS-1) is an undergraduate – built CubeSat satellite developed by Auburn University.

AS-1 is designed to transmit with a power of about 800 milliwatts on a frequency of 437.475 MHz, plus or minus Doppler correction [+/- 9 kHz]. The beacon signal, along with telemetry, will be sent using A1A continuous wave Morse code at 20 words per minute. Additional telemetry from the onboard science experiment will use CW transmissions up to 60 WPM.

AubieSat-1 Video:

Oct. 28 NASA CubeSat Deployment video

Oct. 26 NASA ElaNa CubeSat media briefing with Roland Coelho WH7BE