27 May 2023

QDX transceiver

This is a tiny, digital only, HF transceiver that may be used with free software like WSJT-X or JTDX.  It is available in a version for the lower HF bands or 20-10m. Most people buy it as a kit, but I bought mine ready-made as my soldering skills are poor these days. Years ago my fine motor skills were very good. My wife once said that I could write the Lord's Prayer on a postage stamp. She was probably right!

It produces 5W and is very small.

With the popularity of digital modes, this is all most people really need. It works extremely well. Hans makes some excellent pieces of kit.

Mine is regularly copied all across the world on a very basic antenna.

See https://qrp-labs.com/qdx.html .

Murder - NOT amateur radio


We saw this dead pigeon (or rather what remains of it!) at Anglesey Abbey, near Cambridge, this morning. It looks like it was killed by a sparrow hawk or buzzard.

Football - NOT amateur radio

Although I rarely go to a football (soccer) match, I take an interest. 

Coventry and Luton were at Wembley battling for a place in the Premier League. It was a hard fought match that Luton eventually won after extra time and a penalty shoot out. 

This was very tense and your heart bleeds for Coventry man who missed his penalty. It was a very close fought match that both teams deserved to win.

Network radios

A network radio has been owned for several years - 5 to be precise! Mine looks just like a 2m or 70cm handheld complete with PTT and antenna. It has been used on Echolink, and on DMR with an app called Droidstar.

The phone is essentially an Android smartphone, so it can run all sorts of apps too.

I'll be honest, I prefer "real" radio where the link is open to the variations of the ionosphere or troposphere. I can see they have their place where conventional RF radio is not possible such as in hotels or care homes, or where external antennas cannot be erected. At the depths of solar mimima, I can see them having a place too.

See https://sites.google.com/view/g3xbm4/home/other-amateur-radio/network-radio .

10m 500mW WSPR TX (Saturday)



For about 2 hours I have been on 10m WSPR with my 500mW beacon. Lots of Es and F2 reports already as the table shows.

UPDATE 1400z: So far today, 45 unique station spots of my QRP with the furthermost FR1GZ (9724km).


UPDATE 1853z:
48 unique stations have spotted my 500mW 10m WSPR beacon today (see table).

8m QRP FT8 (Saturday)

Since about 0950z, I have been on 40.680 MHz FT8 (DF about 1950 Hz, TX first). It is now 1038z and no spots.

UPDATE 1153z:  Spotted by S50F (1205km).

UPDATE 1402z:  Now EI1CAH (690km) also spotting me.

Stations spotting my 2.5W to
a low dipole on 8m FT8 today
UPDATE  1822z:  6 stations have spotted my 2.5W 8m FT8 to a low dipole today. There are some notable stations missing this year. G9PUV and EI9KP have not been seen on 8m TX this year.  G3WCS appeared briefly earlier in the spring, although I have not spotted him recently. So far, today has been a good day with plenty of Es on 8m. 

Es promising (Saturday)

As the indications are that we could have a decent day in Europe with Es, my proposal is still to try 8m FT8 on 40.680 MHz and 10m QRP WSPR with my 500mW beacon. I shall probably turn these on in the next 10 minutes. Later, I might try 8m WSPR on 40.680 (DF about 1550 Hz)

See https://www.tvcomm.co.uk/g7izu/radio-propagation-maps/europe-sporadic-e/.

Sunspots - Saturday May 27th 2023

 Solar flux is 149 and the SSN 127. A=6 and K=1.

26 May 2023

8m Saturday

Today seems to have been the best Es day in Europe this season. 

Even on 4m with an 8m dipole (tuned via an internal auto-ATU) I have been spotted widely in Europe and I have spotted 4m FT8 stations all over Europe.

So, assuming Es will be as good tomorrow, I hope to try 8m QRP FT8 on 40.680 MHz. I may also try some 8m WSPR.

I am convinced that very low powered 8m stations operating on WSPR using ISM rules will be widely copied across Europe. 

In many countries a licence is not needed for beacons on the 40.66-40.70 MHz ISM band as long as national rules are followed. In many countries this means 10mW ERP. On 10m WSPR just uWs have spanned Europe. We know from Australia that 5mW of 8m WSPR has spanned 5000km.

10m QRP WSPR TX (Friday)

As my 10m antenna is free, I am on 10m WSPR TX with my 500mW WSPR TX beacon.  Already, a couple of Es spots.


UPDATE 1024z:  Already 10 unique stations spotted.  Es seems good today.

UPDATE 1517z:
31 stations have spotted my 10m 500mW WSPR beacon today. Most are Es. See the table.

UPDATE 2120z:   62 unique stations have spotted me today. I think this is a record number.
Spots of my 500mW 10m WSPR today