Category Archives: Electronics

APRS at Black Rock

Posted on 2012-04-22 by Nigel VH

Recently, I went on a trip to the Black Rock desert in Nevada with a group from the University of Washington to launch some high power amateur rockets. Seeing as though this is a thirteen hour drive from Seattle down … Continue reading →

Posted in Electronics, Ham Radio, Weather | Leave a comment

HX1 Transmitter Module Testing

Posted on 2012-02-20 by Nigel VH

So, as pointed out in my last post, I got some HX1 transmitter modules, and hooked them up, however, it appears that the deviation is kinda funky when it comes to APRS. In this line of thinking, I decided to … Continue reading →

Posted in Electronics, Ham Radio | 9 Comments

HX1 APRS Transmitter

Posted on 2012-02-11 by Nigel VH

I recently purchased a couple of HX1 transmitters for the 144.39 packet frequency from RadioMetrix. I’ve already set up a widget to generate the necessary tones for APRS, so it was a quick matter to connect up the transmitter and … Continue reading →

Posted in Electronics, Ham Radio | 8 Comments

High Altitude Balloons

Posted on 2012-02-03 by Nigel VH

Hey all, Just been working on assembling one of the High Altitude Balloon telemetry boards, and thought I’d snap a photo or two since I hadn’t shown it here before. Haven’t put on the transmitter, antenna connector, temperature sensors or … Continue reading →

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Packet Radio

Posted on 2012-01-01 by Nigel VH

Each year I help out with UW’s rocketry and high altitude balloon classes. In the past, we’ve been using custom telemetry systems using radios in the 70cm band, transmitting RTTY telemetry down. This has been working well for us, but … Continue reading →