Articles by Fred C (W6BSD)

Followup on: where are all the hams?

A few months ago, I wrote a blog post asking the question "Where are all the hams?". For that blog post, I generated heat maps of...

Programming the radio module SA818

Before you can use it, the SA818 radio module needs to be programmed. This is a guide to program the SA818 radio module.

Connecting your TYT on a Raspberry-Pi

Over the years, I have made several Allstar, Echolink, and APRS nodes1. A few months ago, my friend JC (W6IPA) told me he wanted to...

Antenna Presentation

Over the last few months, I have participated in an increasing number of discussions, either on local repeaters or in zoom meetings,...

Remote Controlled Antenna Switch

A few months ago, I installed a new 40 and 80-meter dipole. My shack and my antennae are on opposite sides of the house. My feed line...

Bias Tee

I have been working on building a remote antenna switch to switch from my 40-10 meter to my 80-40 meter antenna —more on the switch in...

ESP8266 Environment Sensor

Humidity control is essential to make sure your home is healthy and comfortable. Too much humidity is bad but so is too little. In the...


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