Figure R3 of 47 CFR 73.190 of the Commission’s Rules contains a map of the estimated effective ground conductivity in the United States. This data is used to predict the propagation of AM signals across the United States. A higher ground conductivity indicates better AM propagation characteristics. The map shows that the ground conductivity in the U.S. ranges between 0.5 and 30 millimhos (or millisiemens) per meter. The conductivity of seawater is 5,000 millimhos per meter, resulting in the best propagation of AM signals.

How to self host various services

A self-hosted recipe manager and meal planner with a RestAPI backend and a reactive frontend application built in Vue for a pleasant user experience for the whole family.

Baïkal is a lightweight CalDAV+CardDAV server. It offers an extensive web interface with easy management of users, address books and calendars. It is fast and simple to install and only needs a basic php capable server. The data can be stored in a MySQL or a SQLite database.

Baïkal allows to seamlessly access your contacts and calendars from every device. It is compatible with iOS, Mac OS X, DAVx5 on Android, Mozilla Thunderbird and every other CalDAV and CardDAV capable application. Protect your privacy by hosting calendars and contacts yourself - with Baïkal.

Mistborn is your own virtual private cloud platform and WebUI that manages self hosted services, and secures them with firewall, Wireguard VPN w/ PiHole-DNSCrypt, and IP filtering. Optional SIEM+IDS. Supports 2FA, Nextcloud, Jitsi, Home Assistant,

List of Broadcast, Fixed Broadcast, Studio-Transmitter Links (Feeders), Remote Pickup & Relay stations 25 - 87.5 MHz.

I make no claims for technical accuracy, good design, or necessarily even originality for the contents of these pages. Rather, I am a simple enthusiast attempting to convey my love and enjoyment of radio, electronics, and computing and perhaps to inspire YOU to build something too. The following pages document projects that I have built over a period of 30 years. Wherever applicable I have named sources and references.

Simple & Free Wiki Software

BookStack is a simple, self-hosted, easy-to-use platform for organizing and storing information.

Open source home automation that puts local control and privacy first. Powered by a worldwide community of tinkerers and DIY enthusiasts.

FreshRSS is a self-hosted RSS and Atom feed aggregator.
It is lightweight, easy to work with, powerful, and customizable.

A painless self-hosted Git service.

Privacy-respecting, hackable metasearch engine / pronunciation sɜːks.

A state of the art disk pooling application with file duplication.

Combines multiple physical hard drives into one large virtual drive.
Stores everything in standard NTFS (or ReFS) files.

Lets you designate any folder as a duplicated folder.
In case one drive fails, your duplicated files remain safe.

Easily select which disks will be used to store files in any folder.
Speed up your pool by placing performance sensitive files on SSDs.

Seamlessly encrypt and store some or all of your pooled files in the cloud.

Figure R3 of 47 CFR 73.190 of the Commission’s Rules contains a map of the estimated effective ground conductivity in the United States. This data is used to predict the propagation of AM signals across the United States. A higher ground conductivity indicates better AM propagation characteristics. The map shows that the ground conductivity in the U.S. ranges between 0.5 and 30 millimhos (or millisiemens) per meter. The conductivity of seawater is 5,000 millimhos per meter, resulting in the best propagation of AM signals.

Radio Hobbyist’s Designbook or RHdb (for short) was designed to guide you into design of
electronics apparatus that relates to radio. It assumes you know something about electronics
but you can skip Chapters which cover familiar subjects. Mathematics needed in design is down
to simple algebra and trigonometry. Topics cover the frequency spectrum of DC through VHF.

You must supply the brainpower. But RHdb can be your main reference, a guidance toreaching
your personal hobby goal. RHdb is written in a sort of Reader’s Digest format: Short and
to-the-point, covering things simply with a minimum of words. Grouping is in 5 sections as
givenbelow with a synopsis of Chapters

A community-supported supercharged version of paperless: scan, index and archive all your physical documents.

Paperless-ngx is a document management system that transforms your physical documents into a searchable online archive so you can keep, well, less paper.

Paperless-ngx forked from paperless-ng to continue the great work and distribute responsibility of supporting and advancing the project among a team of people

There are around 300 operations in CyberChef allowing you to carry out simple and complex tasks easily. Here are some examples:

Decode a Base64-encoded string
Convert a date and time to a different time zone
Parse a Teredo IPv6 address
Convert data from a hexdump, then decompress
Decrypt and disassemble shellcode
Display multiple timestamps as full dates
Carry out different operations on data of different types
Use parts of the input as arguments to operations