“Space Sailors” Seeking Download Help from Ham Radio Operators

A group of students at Cornell University is seeking participation from radio amateurs who are equipped with satellite stations for help in listening for signals from a retroreflective laser sail that is scheduled to be deployed later this week. The sail is currently attached to a 1U CubeSat that was launched early Tuesday, December 2, 2025, from the International Space Station, but will separate and become its own free-flying spacecraft equipped with four tiny “ChipSat” flight computers that will transmit telemetry data back to Earth.

This is the first flight of their ChipSats, and it is this data that the students seek help detecting, according to Ph.D. candidate Joshua Umansky-Castro, who has an amateur radio license, call sign KD2WTQ. The light sail’s ChipSats will be transmitting data using the LoRa digital protocol on 437.400 MHz. The sail, stowed within the CubeSat, is expected to be released a couple of days after deployment – tentatively this Thursday, December 4 – and will likely function independently for no more than 48 hours due to the drag created by the sail.

Additional information, including LoRa parameters and links to a list of compatible receivers and the decoder file, may be found at the https://alphacubesat.cornell.edu site in the ChipSat Ground Station Guide located at https://cornell.app.box.com/s/n4se5ku0ltjb1of2piagfz1y7xa92n47.

It is hoped that the ChipSat and light sail will become the trailblazers for future missions around the solar system, and one day to our closest stellar neighbor, Alpha Centauri.

FCC eyes relocation of upper C-Band

In the US, yet another part of the radio spectrum is being prepared for auction. Jack Parker W8ISH tells us what’s next.

The Federal Communications Commission is exploring reallocation of part of the upper C-band in the US. In a unanimous vote at its November 20th meeting, the commission studied a draft version of a Notice of Proposed rulemaking which will guide its actions going forward. The FCC will be asking broadcasters and satellite users for comment on a number of options for reallocating 4.0 through 4.2 GHZ before it moves to the competitive-bidding stage no later than July of 2027.

The FCC will also be inviting comment from other users of the C-band who may be using frequencies near the portion being eyed for reallocation.

When the lower half of the C-band was reallocated five years ago, its use was assigned for wireless services. Broadcasters’ satellite services were moved from there to the upper half of the band.

Up and running….

Yes we are back online. actually took less time that I first thought. But I did go over all the actual links, the new calendar, pretty much all of it.

With that said, if you see something not working properly, just send me an email. and I will fix the problem as soon as I can. after 5 hours a day spent on this site. I need a nice break from computers, for a spell. But if a problem, email: ohrvcamper@gmail.com is where to send your info.

What Is Meshtastic, a small primer

For those who wish to understand a little more about meshtastic, I went around, and gatherd information, formatted it, then presented it for you

Meshtastic is an open-source project that leverages LoRa, a long-range radio protocol that is widely available in most regions and does not require additional licenses or certifications, unlike HAM radio. Utilizing inexpensive LoRa radios, Meshtastic provides a FREE, long-range, off-grid communication solution for areas without reliable or existing communication infrastructure.

In a simpler way, Meshtastic is a free and easy-to-use tool that lets you send messages without internet or mobile networks. It connects small, specialized devices to create a network where you can communicate over long distances, making it perfect for outdoor adventures, emergencies, or communication in remote areas. You can share short text messages, GPS locations, and even voice messages (coming soon) with others. It’s easy to set up, works on various devices, and has a supportive community if you need help.

What Can Meshtastic Do?

In today’s tech-focused world, it’s hard to picture a day without a steady network connection. But if you’ve ever gone hiking in a remote area and lost signal, or attended a big event where the network was too crowded to use, you know the struggle. During natural disasters like typhoons or floods, communication networks might fail, making it tough to call for help or connect with loved ones. I hope you don’t face these challenges, but it’s worth thinking about potential solutions if you do. What would you want to have in place? This is where Meshtastic comes into play, offering a potential Plan A for those rare yet crucial instances: an emergency response solution.

Why Meshtastic?

There are also many other options, such as the more well-known LoRa-based solutions like LoRaWAN® and Sidewalk, or the commonly used 4G/5G, and even Starlink developed by SpaceX. So, why Meshtastic?

Differences Between LoRaWAN®, Sidewalk, and Meshtastic

As shown below, I have listed the biggest differences between the three. Meshtastic is decentralized and doesn’t require gateways, making it better suited for flexible, independent, peer-to-peer communication scenarios, while LoRaWAN®is ideal for large-scale, centrally managed IoT applications. Amazon Sidewalk, is designed to extend the connectivity range of smart home devices using low-power, community-based networking.

Differences Between 4G/5G and Meshtastic

Most of us rely on 4G/5G networks in our daily lives, so how does Meshtastic compare to them? The main differences are outlined below. Simply put, Meshtastic is ideal for situations where there is no cellular signal, no infrastructure, or limited power availability, such as outdoor activities, survival scenarios, or rescue operations. On the other hand, cellular network coverage is primarily concentrated in areas with high levels of human activity, such as cities and urban regions.

Differences Between Starlink and Meshtastic

Starlink and Meshtastic are two different communication solutions, each with its own strengths. Starlink is ideal for those who need constant online connectivity and high-speed internet access, even in remote areas. However, if you need a more affordable, portable solution for offline communication, especially when power and infrastructure are limited, Meshtastic is the better choice. Last but not least, Meshtastic is free to use—once you purchase a compatible device, you can start enjoying the free mesh network with your friends!

Meshtastic Limitations

Text messages only at the moment: Meshtastic uses LoRa, which focuses on long-range and low power. This limits bandwidth, so it can only send text—no images, videos, or large files. Short messages: You can only send messages with 228 characters or fewer due to LoRa’s packet size limit, which isn’t enough for detailed or complex information.

For those new to Meshtastic, a common question is how to select the right product from the wide range of Meshtastic-compatible options, which include everything from development boards to ready-to-use devices. In the following, I will share some of the most popular Meshtastic devices with you.

Search and Rescue

When disasters strike and signal or power infrastructure fails, Meshtastic can be a vital tool for emergency response, supporting search and rescue operations. A Meshtastic tracker, capable of precisely identifying the location of those in distress and maintaining communication with them, is an excellent choice for equipping rescue teams or ensuring everyday emergency preparedness.