** This is now outdated, I recommend the pre-built image from here rather than following these instructions. I can not support this method any more ** I originally bought a Raspberry Pi back in October 2012 but as I didn’t have a specific purpose in mind for it, I quickly sold it again. A few […]
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 is a version of the RTL-SDR dongle with a built in preamplifier and bandpass filter. […]
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 bands (on 30m at time of writing) and my radio high point of the year […]
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 every stage.
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 frame with space at the end for a calibration cycle. You should note that to […]
Revisiting D-STAR and the GB7TE repeater
Back in March 2011 I wrote about three different modes of communications, EchoLink, D-STAR and QSONet. In that piece, I discounted all of them and although I said that D-STAR was the one which most interested me, I wasn’t planning on using it due to a lack of any D-STAR repeaters nearby. Fast forward to earlier […]
Building a QRP Labs OCXO
I’ve not posted much this year because I’ve not been doing much new stuff. I’m still messing around with the very low power modes and enjoying that a lot. I’m transmitting WSPR and QRSS all the time and tend to leave the transmitter running on one band/mode for a month or so at a time. […]
CQ WPX RTTY 2015
It’s been a while since I made a semi-serious contest entry and I happened to notice a couple of weeks ago that the CQ WPX RTTY contest was coming up. I currently hold the England record for the 15m high power section and so I planned to try and beat that this year. I […]
20m QRSS warmup
I’ve had this screenshot sitting on my desktop for a while because I think it’s quite interesting. It shows my 20m QRSS signal from when I switched the transmitter on, for a period of nearly four hours. You can see how it takes almost an hour to warm up and calibrate itself to the correct […]
I’m not dead!
I know I’ve not updated this blog for some months but don’t panic, I’m not actually dead! Although I’ve not done much operating this year, I have still been playing radio. I’ve been melting a lot of solder building WSPR and QRSS transmitters and there’s normally some RF being transmitted on an HF band somewhere […]
