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Finally finished my DMR hotspot

Success! After initially putting together a DMR hotspot based on a MMDVM hat mounted on a Raspberry Pi and configuring with a pi-star image in December last year, I finished putting together the enclosure for it today. I…

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mcHF clones from China

  So much has happened in the time since I last posted – I have moved house (and workshop), changed employers, etc, etc, and not been in a position to do much SOTA work, but thats ok –…

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A Slightly Toasted Icom AH4 Antenna Tuner

I purchased a slightly toasted AH4 tuner, which had clearly been overloaded during the tune cycle. The power attenuator had been thoroughly cooked. I spent a couple of afternoons removing the burnt area of the PCB using a…

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SOTA Winter Bonuses!

I just received an awesome email from the SOTA Manager here in the ACT. “The VK1 SOTA 3 point winter bonus period commences at 00:00h UTC 15 June, that’s 10:00 am Friday 15 June 2018 and concludes at 23:59h UTC on 14…

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WSPR in the park at lunchtime

Inspired by Wade (VK1MIC) and Andrew’s (VK1AD) blog posts, I have decided to revive my old VK1ZDJ blog here and start posting what I hope are interesting articles.   At the very worst, it allows me an environment where…

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An Enclosure for the QRP Labs QCX 5W CW Transceiver

I have recently obtained a neat little radio from the clever folk at QRP Labs – the QCX-40. https://qrp-labs.com/qcx.html It is a single board CW transceiver, designed to operate on a single band from 80m through to 17m…

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My First SOTA Activation – Tuggeranong Hill VK1/AC-038

Having attended the AGM for the local Canberra Region Amateur Radio Club, I discovered that a group of SOTA enthusiasts were planning on activating a number of hills in the Canberra region on 01Mar2018 at 0800UTC.  This seemed…

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An interesting portable NVIS antenna

I have been researching NVIS antennas and have encountered a few interesting military versions. The AS-2259 is one example which uses a 3m mast and set of two offset fed dipoles (7.56 m and 11.22 m)  The dipoles…

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SOTA Equipment

I’m relatively new to the whole SOTA hobby, so I am still learning as I go. My main portable gear is based on the following; FT817 – A beautiful 5W radio for HF, 15, 144 and 430 Mhz…

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