Category Archives: radio communications

PD Powerbank for SOTA Radios

This post describes how the newish Power Delivery (PD) mode mobile powerbanks can be used to power a SOTA transceiver as well as keeping your other hiking devices charged. The PD protocol enables fast charging of mobile devices from a … Continue reading

Posted in Hiking, Projects, radio communications, SOTA | Tagged , , , | 2 Comments

3D Printed Accessories for the FT-817

A few radio accessories printed out recently for the ‘817 transceiver (from Thingyverse, see links): DC plug adaptor using an XT60 connector.  I have been using these connectors for a while now, they are small and capable of a lot … Continue reading

Posted in Projects, radio communications, SOTA | Tagged | 6 Comments

USX or uSDX QRP HF Transceiver

This build is based on the interesting design by Guido, PE1NNZ.  The transceiver originally used the very successful QCX as an initial platform, but it now has it’s own life and there are several scratch builds using dedicated PCBs on … Continue reading

Posted in Projects, radio communications, SOTA | Tagged , , | 6 Comments

Archer Lookout VK3/VC-038

One of the newer Victorian summits added to the register late in 2019 was Archer Lookout, VK3/VC-038.  Ron, VK3AFW was the first to activate it and after some discussions on access, I planned an activation on an ebike. Archer Lookout … Continue reading

Posted in radio communications, SOTA | Tagged , | 3 Comments

LoRa GPS Tracker

LoRa is a newish Internet Of Things communications technology.  It promises long range (LoRa), transmits a small amount of power and is designed for sensors that may need to operate from batteries for very long periods of time.  The air … Continue reading

Posted in Projects, radio communications | Tagged , , , , | 12 Comments

New Case for the QRPLabs QCX CW Transceiver

The QCX transceiver was previously packaged in a standard plastic enclosure from Altronics.  The fit was good and the extra space allowed for a battery pack but metal is a better choice for RF. I was not satisfied with the … Continue reading

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144 MHz for the KX2 Transceiver

Many times I have thought it would be nice to have 2 metres on the KX2, I do miss it from the FT817 days. This bare board transverter was on Ebay from a Ukraine seller, the feedback was very good … Continue reading

Posted in Projects, radio communications, SOTA | 2 Comments

Handles for the IC-7200 Transceiver

Grab handles are a good idea for the IC-7200  for when the radio is taken out portable.  The problem is that they cost something like $120 as an accessory!  This is about 10% of the cost of the radio itself. … Continue reading

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Diamond RHM8B Antenna Strain Relief

I came across this interesting part at the Tokyo Radio Fair last month. It is a BNC strain relief for the popular Diamond RHM8B antenna, particularly when used with a PL259 socket adaptor on an FT-817.  If anyone has one … Continue reading

Posted in radio communications, SOTA | 2 Comments

Lightweight 2m Yagi for SOTA

With HF conditions poor at the moment,  2 metres with a bit of antenna gain is a good backup or main setup for SOTA. I wanted to make this antenna very lightweight and easy to carry in the pack without … Continue reading

Posted in Projects, radio communications, SOTA | Tagged | 9 Comments