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Fred's Blog about Ham Radio, Python, Unix and more...

Grid Dip Meter

In previous years, amateur radio enthusiasts heavily relied on dip meters as an indispensable tool for circuit testing. These meters are also known as grid dip meters. However, as of 2024, dip meters have become increasingly scarce …

Essential Space Weather Graphs

It's important to keep an eye on space weather for effective communication, especially for a ham radio operator. Solar activity can have a significant impact on how radio waves travel. I'll share some essential graphs to monitor from my website: http://bsdworld.org/. Note The graphs provided on this page …

Building a Delta Loop Antenna (part 2)

Club members construct a Delta Loop antenna for the 40m band, using calculations and hands-on methods for installation and tuning. Through collaborative effort and practical experimentation, they achieve resonance and manage impedance, showcasing the educational value of experiential learning in amateur radio construction.

Building a Delta Loop Antenna

We've decided to tackle an HF 40-meter to 10-meter Delta Loop antenna for our next meetup. We picked this one because it's a multi-band antenna, which adds a challenge compared to a simple dipole.

Debunking the Simplified Notion About Electrocution

On repeaters, in Ham Meetings, or when people talk about electricity in general, I hear the sentence, "It's not the voltage that will kill you, but the current." The idea that "current, not voltage, kills you" oversimplifies electrocution.

Adding the 17-Meter Band To My Hustler 4BTV

The Hustler 4BTV antenna is a vertical HF antenna known for its efficiency, durability, and versatility across multiple bands. However, if you want to use that antenna to tap into the 17-meter band, you'll need to modify it by adding a dedicated wire. This blog post describes how to include …

San Mateo Radio Club Scavenger Hunt

The San Mateo Radio Club is organizing a ham radio scavenger hunt. A radio scavenger hunt can be a fun and engaging way to encourage amateur radio operators to explore their skills and connect with other club members. The hunters gather clues to find the final meeting location …