Category Archives: HF

Listening to the Camb-Hams from the Isle of Islay

The Camb-Hams are on their usual annual pilgrimage to Scotland and I’ve worked them on a few bands and modes.  I’ve also made a couple of recordings of them on 40m CW, showing how well the Kenwood TS-590SG can read Morse Code … Continue reading

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

What can be achieved in twelve hours of 20m JT65/JT9?

WSPR is great, I enjoy running WSPR and seeing how far I can transmit using very low power but there are a couple of drawbacks.  I appreciate this will sound as though I’m knocking WSPR but trust me, I’m really not. … Continue reading

Posted in Amateur radio, Data, HF, JT65, JT9, QSO365, WSPR | Tagged , , , | Leave a comment

A new record – G to ZL on 60m QRSS

Toward the end of March I ran WSPR and QRSS on the 60m band for a couple of weeks.  I did some experiments on 60m nearly three years ago which gave good results and I was keen to improve that. I posted … Continue reading

Posted in Amateur radio, HF, QRSS | Tagged , , | Leave a comment

New aerials for VHF/UHF (2m/70cms) and 28MHz (10m)

Over the years I’ve used a few different VHF/UHF aerials here and the one I always found the best was my old Diamond X500.  I bought that when I still lived at home with my parents and it moved here with … Continue reading

Posted in Amateur radio, HF, UHF, 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

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