Archive for category: Amateur Radio

An Arduino Powered HF Beacon…

June 7, 2015 | Amateur Radio, WSPR | By: Mark VandeWettering

LB3RE sent me a link to this awesome HF beacon by Anthony, F4GOH and Christophe, F4GOJ that has many of the same features as my (as yet still in-progress) beacon transmitter does. And, of course, his actually exists, so it’s already infinitely more awesome than my idea. I was particularly interested in his very simple […]

Some reliability problems with my DS3231…

May 31, 2015 | Amateur Radio, Arduino, Teensy | By: Mark VandeWettering

I was working on some additional software to power my nascent WSPR project. I’ve been thinking that rather than using an Arduino, it would be better to use the Teensy, so I’ve been experimenting a lot with the Teensy LC. My idea was to wire up my Ultimate GPS and an I2C based DS3231, and […]

Progress Report: Big Box O’ RF

May 27, 2015 | Amateur Radio, Arduino, My Projects, WSPR | By: Mark VandeWettering

Previously, I wrote about a project I called the Big Box O’ RF. I’ve shifted goals a bit, and done some experimentation, and have changed some of my goals and approach. First of all, I’ve changed the goal a bit. Instead of being a piece of test equipment, I’m actually more interested in using it […]

Teensy LC hooked to an Adafruit Ultimate GPS…

May 26, 2015 | Amateur Radio, Arduino, My Projects, Teensy, WSPR | By: Mark VandeWettering

One of the things that I really like about the Teensy LC (besides its low price) is that it has three hardware serial ports. Hardware serial ports are just nicer than the SoftwareSerial ports that you see on the ordinary Arduino platform. While the latest support for SoftwareSerial ports on digital pins work reasonably well […]

Testing the DS3231 module… I’m impressed!

May 23, 2015 | Amateur Radio, Arduino, My Projects, QRSS, WSPR | By: Mark VandeWettering

I hooked up my new DS3231 clock module to an Arduino that was being fed with the one pulse per second input from a locked GPS, and counted the number of pulses from each. In 3170 seconds, the clock module generated 103874565 pulses, for an average pulse per second of 32768.0015773 pulses per second. That’s […]

Weekend Update: Maker Faire, new gadgets, and I ground myself…

May 17, 2015 | Arduino, electronics, ESP8266, WSPR | By: Mark VandeWettering

Greetings readers. I’m hopefully wishing there is still more than one. This weekend was the Bay Area Maker Faire 2015, the 10th incarnation of an event which has become increasingly (even frighteningly) popular. I’m tempted to channel Yogi Berra, who said “Nobody goes there. It’s way too crowded.” Anyway, I got out of my house […]

Time from the ESP8266…

May 14, 2015 | Amateur Radio, Arduino, ESP8266, WSPR | By: Mark VandeWettering

Yesterday, I mentioned the idea of using the cheap ESP8266 as a clock source for a WSPR beacon transmitter. My initial idea was to basically write code for the Arduino that connected to a remote NTP server, formulate UDP packages… sounds like a pain. But then I found that there was alternative software I could […]

It’s about time… (with some WSPR updates)

May 14, 2015 | Amateur Radio, WSPR | By: Mark VandeWettering

Yesterday I finally found a copy of the code that I wrote years ago to figure out the tone sequence for messages used by the Weak Signal Propation Reporter system. To avoid losing it again, I decided to put both the C versions and the Python versions on my github page so that even if […]

Playing with a buffer amplifier for a DDS…

May 1, 2015 | Amateur Radio | By: Mark VandeWettering

I tinkered together a circuit for a buffer amplifier that I thought would be good to use with the AD9850 DDS board I have. In particular, for the purpose of this exercise, I was trying to preserve the nice sine-wave nature of the DDS input, and present it at the output into a 50 ohm […]

Help wanted for new project… The Big Box O’ RF

April 29, 2015 | Amateur Radio | By: Mark VandeWettering

As I’ve mentioned over the last few months, I have piles of different development boards, and lots of little display modules and the like. I’ve been thinking of doing a simple radio project, aimed at helping further experimentation with QRP (low-power) radio homebrewing. Inspired by Pete and Bill over at the Soldersmoke Podcast, I thought […]

Interested in the history of my callsign: K6HX

April 25, 2015 | Amateur Radio | By: Mark VandeWettering

I was originally licensed under the callsign KF6KYI (Kenwood-Yaesu-Icom, or what I prefer, Kiss Your Iguana) but when I upgraded to Extra a few years back, I dug around and was lucky enough to snag the callsign K6HX (missed out on getting the highly desirable K6TT, which would have been AWESOME). I never really gave […]

Exciting AMSAT-NA opportunity…

April 25, 2015 | Amateur Radio, Amateur Satellite | By: Mark VandeWettering

I read this today: AMSAT is excited to announce that we have accepted an opportunity to participate in a potential rideshare as a hosted payload on a geostationary satellite planned for launch in 2017. An amateur radio payload, operating in the Amateur Satellite Service, will fly on a spacecraft which Millennium Space Systems (MSS) of […]

New arrivals from Adafruit, and minor updates…

April 23, 2015 | Amateur Radio, My Projects, Raspberry Pi | By: Mark VandeWettering

I think Bill and Pete have been having way too much fun with the radio projects centered around the Arduino and the SI5351, so I decided to join them and ordered one of Adafruit’s SI5351 boards (I still have the kit from Jason’s Kickstarter which will almost certainly be better once I get up the […]

A (not entirely simple) LCD display for the Arduino…

April 21, 2015 | Amateur Radio, Arduino, My Projects | By: Mark VandeWettering

I am a big fan of Bill Meara N2CQR and Pete Juliano N6QW, hosts of the really great Soldersmoke Podcast. Together, they chat about homebrewing ham radio equipment, and what they’ve learned in their lessons along the way. Their “tribal knowledge” is of terrific help to someone like me who keeps making small forays into […]

SSTV from the ISS…

April 11, 2015 | Amateur Radio, Amateur Satellite, Space, SSTV | By: Mark VandeWettering

Well, it’s not pretty, but I was just using a 17″ whip antenna on my VX-8GR, recorded it with Audacity, and then decoded it with MultiScan on my Macbook. The first bit of the recording is pretty rocky, so I had to start the sync myself. I’ve bean meaning to do some experiments with bad […]