Category Archives: Electronics

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 →

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Icom 706 MKII-G Rig Interface

Posted on 2011-12-02 by Nigel VH

Hey all, A short while ago, I decided to rebuild my rig interface. I had an older one that I stuck together with a bunch of random bits of stuff, and some hot glue, but it ended up working marginally, … Continue reading →

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2011 Balloons Launch

Posted on 2011-05-21 by Nigel VH

Our 2011 launch was completed Saturday, May 21st, and summary data is listed below. Payload A launched at 22:51 UTC, reached a maximum altitude of 19786 meters, total flight time was 90 minutes, and time after landing till the payload … Continue reading →

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