Re: Neutron-1 Deployment 11/5

Stefan Wagener

So far there has not been any confirmed reception reports. It looks like another (unfortunately) dead satellite at this point.

73, Stefan VE4SW

On Mon, Nov 16, 2020 at 9:58 AM AF7ZA <billnjoano@...> wrote:
Thanks Clint. A fellow sat operator K7IW informed me that BPSK is upper side band and not FM. I had no way of knowing. He suggested I use my RSP1 SDR to decode it then feed the audio into UZ7HO to see it.
It certainly is not as simple as working a FM bird.
I was hoping to find information telling what equipment is needed to decode this satellite, but a certain amount of prior knowledge is required which I don’t possess…yet.


On Nov 15, 2020, at 11:12 23AM, Clint Bradford via <clintbradford@...> wrote:

Here’s Gunter’s info ... I will do some more digging ...

On Nov 15, 2020, at 09:02, AF7ZA <billnjoano@...> wrote:

On a whim I thought I’d try to see if I could receive beacons from this Satellite. I finally found and imported the TLE into Gpredict so at least I can track it.
I can’t seem to find it listed on clestrak nor any other Amateur radio satellite listing. No NORAD number either.And more importantly, I can’t find out what software to use should I be able to actually hear it beacon as it flies over.
A letter to W1HJK Dave (FLdigi),tells me that BPSK 1200 is not supported by FLdigi. I was hoping to use my Mac to decode, but I do have UZ7HO on a PC but haven’t tried that yet.

Has anyone received beacons from this, and how did you do it ?

Your thoughts ?

On Nov 4, 2020, at 6:14 46AM, Clint Bradford via <clintbradford@...> wrote:

The 3-U Neutron-1 CubeSat is scheduled for deployment from the International Space Station (ISS) on November 5 at 10:40 UTC. For the satellite’s first month and during its commissioning phase, the Neutron-1 beacon will transmit 1,200 bps BPSK telemetry every 60 seconds on 435.300 MHz. Developed by the Hawaii Space Flight Laboratory (HSFL) at the University of Hawaii at Manoa (UHM), the satellite’s payload includes a VU FM amateur radio repeater during available times and according to the spacecraft’s power budget. The Neutron-1 science mission is spelled out in a formal paper, Neutron-1 Mission: Low Earth Orbit Neutron Flux Detection and COSMOS Mission Operations Technology Demonstration.

HSFL operates and maintains a satellite UHF, VHF, and L/S-band amateur radio ground station at Kauai Community College.

The primary mission of Neutron-1 is to measure low-energy neutron flux in low-Earth orbit (LEO). The science payload, a small neutron detector developed by Arizona State University, will focus on measurements of low-energy secondary neutrons — a component of the LEO neutron environment.

A number of other amateur radio satellites are expected to launch or be deployed in the next few months. AMSAT’s RadFxSat-2 (Fox-1E) is expected to go into orbit by year’s end on Virgin Orbit’s LauncherOne vehicle. RadFxSat-2 carries a 30 kHz wide VU linear transponder.

The Tevel Mission — a series of eight Israeli 1U CubeSats, each carrying a UV FM transponder — is expected to launch from India on a SpaceX Falcon 9 rocket in December. Also from the Herzliya Science Center is a 3U CubeSat called Tausat-1, which is scheduled to launch on a Japan Aerospace Exploration Agency (JAXA) ISS resupply mission in February for subsequent deployment. Tausat-1 carries an FM transponder.

AMSAT-Spain (AMSAT-EA) reports that its PocketQubes, EASAT-2, and HADES, have been integrated for launch on a SpaceX Falcon 9 in December, while GENESIS-L and GENESIS-N have been integrated for launch on Firefly’s Alpha rocket.

In other amateur satellite news, Jérôme LeCuyer, F4DXV, set yet another record, this time via EO-88, on October 28, working Vladimir Vassiljev, R9LR, at a distance of 4,560 kilometers (2,827 miles). F4DXV is now a distance-record contact partner on 10 LEO satellites, while R9LR is a contact partner for records set on four LEO satellites. AMSAT tracks claimed distance records. — Thanks to AMSAT News Service 

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