7 Oct 2023

LoRa devices at 863-870 MHz

 As far as I can gather, this band is licence exempt in the UK and may be of use to experimenters. I have not read the regulations wrt ERP etc.. 

It may be of use for short-range experiments over a few kilometers. I expect there are several RF modules available. 

Helsinki, Finland - NOT amateur radio


In all, I have been here 5 times, 2 for work and 3 times on holiday. On holiday it was summer time and mild. For work, it was once in winter and very cold and once in May. We travelled north to Oulo where there was still ice in May!  

Helesinki is a fine city with a nice feel.

See https://en.wikipedia.org/wiki/Helsinki .

Quy Hall near Cambridge - NOT amateur radio


This morning, we went for a walk to Quy Hall, near Cambridge. 

8m QRP FT8 (Saturday)

My 2.5W to the dipole was turned on at about 0830z. Already spotted by G4WSZ (12km) , but really hoping for some excellent F2 propagation and transatlantic spots like last F2 season. 

UPDATE 1319z:   Still just the local spot. I think for F2 it has to be good with just 2.5W.

10m QRP WSPR TX (Saturday)

 My 500mW 10m WSPR beacon was turned on at about 0830z. It seems almost every day I get spotted in the Canary Islands. 

UPDATE 1129z:  So far today, 16 stations have spotted me.

UPDATE 1803z:   50 stations have spotted me today.

630m split?

I can't remember the last version of WSJT-X I used on 630m. It appears a problem with split may be linked to a earlier version, so later today I may try split with WSJT-X v2.6.

UPDATE 1310z:  First problem - locate the FT817ND manual to find how to set up split as I cannot remember how to do this!

UPDATE 1755z:  Split seems to be working so I can both TX and RX on 472 kHz WSPR.


UPDATE 1900z:  OH1LSQ
(1723km) is the furthermost spot of me in the last few days (see table). Not bad with the low ERP (10mW) and earth-electrode "antenna" in the ground. This REALLY works and nothing is visible.


UPDATE 2012z:
These are the stations I have spotted on 630m WSPR RX in the last few weeks (see map).

10m WSPR TX yesterday

In all, 41 stations spotted my 500mW 10m WSPR beacon yesterday. 

Sunspots - Saturday October 7th 2023

Solar flux is 155 and the SSN 138. A=9 and K=2. 

6 Oct 2023

630m antenna current meter fixed

Just mended my 630m antenna current meter. G0VQH (15km) is reporting me 2-3dB stronger. I think there were dry joints. I am finding soldering much harder nowadays- a combination of old age, eyesight and my 2013 stroke!

As my modified FT817ND does not allow me "split" operation for some reason, I am currently TX only with WSPR on 22% TX.

UPDATE 1841z: 6 spots of me so far this evening. I think my ERP is about 10mW.

Ely Cathedral Art Exhibition - NOT amateur radio

Today, we went to Ely. There was an art exhibition in the Lady Chapel at the cathedral.  It was very good and free.