Amateur Radio Lab

Background Filters are a hotly contested topic in the realm of Meshtastic and Meshcore.

Background The goal of this post is to assist others with demonstrating how measure typical characteristics of a Meshtastic / Meshcore band pass filter.

For this post I will be presenting some performance data that I was able to measure for a number of a different 900Mhz ISM band filters as they relate to Meshtastic and MeshCore.

For my journey into Meshtastic one of the most frustrating aspect has been the polarity of JST connectors.

I have been messing around with Meshtastic on and off over the past 6 months and have been looking to improve the performance of my home node.

Background The goal of this post is to provide a brief characterization of the Maxmium Power Point Tracking (MPPT) for a few common Meshtastic solar panels.

It seems like every year summer or winter field day comes around, like many others I am scrambling to try to recall a decode what the correct exchange is suppose to be.

My collection of older tube type equipment has almost happened on accident, I never went in planning to start collecting older boat anchor type tube equipment, over time though it seems to have just happened!

From a sale of a recent silent key I purchased a gently used Yeasu FT-857D radio.

I have been interested in doing a rebuild of a Heathkit HP-23 power supply for a little while.

WARNING – The power supply operates at lethal voltages that can kill you.

The replacement circuit breaker requires for the chassis mounting hole to be drilled and opened up to a 3/8in hole.

For my original HP-23A refurbishment project I decided to develop my own custom circuit board.

The easiest step for something catastrophic to go wrong during the rebuild phase is during wiring.

After wiring is complete I always suggest taking a break and prior to testing doing a through check of all of the wiring to the schematic before powering everything up.

The Bird Thruline 43 Wattmeter is a quintessential piece of test equipment for the RF professional and tinker and is considered to be the timeless standard for measuring forward and reflected RF power.

As you go west in the Upper Peninsula, just before reaching Wisconsin you will see one of Michigan’s largest state park, Porcupine Mountains State Park.

After finishing up in Copper Harbor we headed down to the visit the Adventure Mining Company for a mine tour.

Copper Harbor is a small community and is the last town when heading north east up the Keweenaw Peninsula, the town has a population of just over 125 residents and during the summer months likely has more tourists than residents.

Sometimes when doing a Parks on the Air or POTA activation you are looking for a quick and easy park to activate and Baraga State Park, US-1486 was just that.