Category Archives: Construction

Building a Raspberry Pi internet watchdog

I wasn’t sure whether to post this or not as it’s not specifically amateur radio – But there’s a small amount of electronics involved so I figured it might be of interest. A few days ago while Susan and I … Continue reading

Posted in Construction, Not amateur radio, Raspberry Pi | Tagged , | Leave a comment

How to replace the noisy fan in an Icom ID-5100 with a much quieter one

I’m a happy owner of two Icom ID-5100 radios, one is mounted in the car and I use the other one in the shack on low power for working the local repeaters.  It doesn’t get much use but I’m monitoring GB3CL … Continue reading

Posted in Amateur radio, Construction, D-STAR, FM, VHF | Tagged , , , , , , , | Leave a comment

5B4AGN bandpass filters – The measurements

I’ve been moving some boxes around recently and I unpacked the bandpass filters I built for one of the Martello Tower Group DXpeditions and successfully used again during our activation of the MV Ross Revenge in August 2016. It struck me … Continue reading

Posted in Amateur radio, Construction, DXpedition, HF | Tagged , , | Leave a comment

ADS-B setups – Comparing internal and external aerials

Following on from my last update, I’ve spent a fair bit of time experimenting with two very different ADS-B aerial configurations.  I have two Raspberry Pi3s, both running identical software and exactly the same receivers, the FlightAware Pro Stick Plus which … Continue reading

Posted in ADS-B, Construction, Data, Raspberry Pi | Tagged , , , | Leave a comment

Building an ADS-B receiver setup

I realised recently that I’ve barely touched this blog for most of 2016 and I suppose that’s because I’ve not done a massive amount of radio this year.  My low powered QRSS/WSPR transmitter continues to run mostly 24/7 on various … Continue reading

Posted in ADS-B, Construction, Data, Raspberry Pi | Tagged , , , , | Leave a comment

Video of the ten minute multi QRPp mode transmission

After my entry a few days ago, I’ve made a video of my Hans Summers Ultimate 3S transmitter going through all four modes in a single ten minute frame.  It’s annotated with comments along the way describing what’s happening at … Continue reading

Posted in Amateur radio, Construction, CW, Data, HF, QRSS, WSPR | Tagged , , , , | Leave a comment

Running four QRPp modes in a ten minute frame

Over the last month or so I’ve been doing some experimenting using a newly built Hans Summers Ultimate 3S transmitter fitted with the new oven controlled crystal oscillator and I’m now running four different modes in a single ten minute … Continue reading

Posted in Amateur radio, Construction, CW, Data, HF, QRSS, WSPR | Tagged , , , , | Leave a comment