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 and GB7TE most of the time. About the only thing which I don’t like about this […]
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 that I’d never produced a full set of figures showing rejection on each band, insertion […]
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. […]
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 […]
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.
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 […]
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. […]
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 […]
Last weekend, following the Martello Tower Group DXpedition to Herm Island, I put up a 40m vertical in my back garden. Not just any 40m vertical, it’s exactly the same one we used to great success on Herm. It’s made up of a 12m Spiderpole with a 1/4 wave vertical element and around 30 radials. […]
Some time ago I posted saying that I’ve been winding lots of coils and since then I also mentioned that I started work on a set of 5B4AGN filters and some of those was shown here. Since then, I’ve completed a full set of low pass filters for my WSPR/QRSS transmitter and here they all […]
