Open Research Institute / Ham Expo March 2021

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Machine Learning and Ham Radio ID of HFVHF Signals Bob McGwier N4HY

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Student Experiences in the Space Program at University of Puerto Rico 13 March 2021 Ham Expo

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Welcome to Ham Expo! Here's a friendly introduction to Open Research Institute. We often collaborate with TAPR, the home of the Personal Space Weather Station. The hardware for the PSWS is the TangerineSDR.

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UK Microwave Group (UKuG) member Kent Britain WA5VJB talks about 'Care and Feeding of Yagi’ Antennas' - including some interesting ways to doing Yagi’s and myths of Yagi Stacking.
- Recorded from the online UKuG talk on Wednesday 10 February 2021

SatNOGS - State of the Union
More details about this talk: https://events.libre.space/event/4/contributions/118/
OSCW 2020 - Day 1 - Room 1 - https://oscw.space

An overview of the SatNOGS project, a network of satellite ground stations around the world, optimized for modularity, built from readily available and affordable tools and resources.

Low Earth Orbit (LEO) satellite launches rate increases with the participation of old and new entities. In this growing environment SatNOGS provides a scalable and modular solution to track, receive telemetry, monitor and command & control satellites.

SatNOGS global community, dedicated to its free and open source values, develops hardware ground station designs (antennas, rotators, electronics), software for SDR-based communications, satellite scheduling and mission monitoring platforms.

SatNOGS continuously develops and improves its infrastructure to allow observers use this networked ground segment and remotely operate SatNOGS ground stations around the world. It provides also an easy way to store, access and view increasingly received satellites data, by supporting VHF and UHF bands and by moving forward with higher bands like L, S and X.

This is a proposal for a "state of the union" talk about SatNOGS focusing on what has happened since previous OSCW, growth, development and trajectory for features and expansion.

JH4PHW 坂井志郎氏

最近ISSのリピータが使えるようになり、衛星通信に興味を持つ方が増えています。今回は衛星通信入門としてどのような衛星があるのか、どのような設備があれば楽しめるのかを紹介した後に国際宇宙ステーションのリピータや低軌道衛星での交信について紹介します。

ISSからのSSTVやスクールコンタクトの信号をハンディ機で聞いてこの強さなら交信できるのではと思った方も多いと思います。この機会に衛星にチャレンジしてみませんか？

「バーチャル・ハムフェス2020」案内ページ
https://jarl2020.wordpress.com/virtual-hamfes-2020/

Remote Labs are two physical lab benches. They have equipment for advanced digital communications design work. This equipment will be accessible online to anyone, anywhere that wants to work on open source amateur radio satellite service or open source amateur radio terrestrial engineering development.

The primary focus of the equipment list reviewed today is to support the design, verification, and test of the DVB family of links. DVB-S2, S2X, and T2 are all commonly found in amateur radio. DVB-S2X is the protocol family used by Phase 4 Ground and Space.

Daniel Estévez presented this workshop on Decoding Interplanetary Spacecraft at the GNU Radio Conference in September 2020.

Additional resources and code can be found at his GitHub repository.
https://github.com/daniestevez/grcon2020-workshop/

AMSAT-DL Online Satellite Symposium on 26th September 2020

The ADALM Pluto as part of the AMSAT-DL LEILA QO-100 control station in Bochum by Mario DL5MLO.

AMSAT-DL Online Satellite Symposium on 26th September 2020

Portable station for QO-100 based on the modules of AMSAT-DL by Matthias DD1US.

Getting operational on the QO-100 geostationary amateur radio satellite was originally my project for the winter of 2019/20 but the coronavirus lockdown has given me the opportunity to finish my project.
This is a description of my setup for QO-100, using a LimeSDR mini, cheap 2W 'wifi' amplifier, and POTY antenna with a 90cm dish. I also give a brief introduction to the satellite for beginners. Please be aware there are many other ways of getting QRV on the satellite - the equipment here shouldn't necessarily be your shopping list!

Correction: The 3cms downlink is at 10.489.5GHz, not 10.6GHz. Everything I say here still applies, however!

References:
M1GEO's blog post (also includes details of the Wifi amp modification): https://www.george-smart.co.uk/2019/03/limesdr-edup-pa/
POTY antenna source: https://www.passion-radio.com/satellite-qo-100/poty-antenna-762.html
Lime Mini SDR: https://limemicro.com/products/boards/limesdr-mini/
BATC WebSDR for QO-100: https://eshail.batc.org.uk/nb/
STL file for 3D printing the LNB holder: https://www.thingiverse.com/thing:4078518/files
SDR Console: https://www.sdr-radio.com/console

Thanks to M1GEO, M0WUT and M0VFC for their assistance getting me started!