22 May 2025

Ferrite rods as TX antennas


Overnight I tried TXing at 3W on 30m WSPR with just a ferrite rod antenna fed via a Z-match ATU. 

Although I had plenty of RX spots I only saw one on TX from an HB9. Previous attempts on FT8 were unsuccessful with just a couple of RX spots and none on TX. 

The ferrite rod was configured as an E field vertical without any earths. I suspect the ATU was lossy, but it does show that even a ferrite rod just a few centimetres long does work on TX.

Triple diversity RXs

 

This array of AR88 receivers was a triple diversity receiving station in Canada. 

After WW2 a lot of AR88s came on the market as surplus. A lot were bought by radio amateurs.


Sunspots- Thursday May 22nd

 Solar flux is 119 and the SSN 88. A=13 and K=2.

21 May 2025

Gaza - NOT amateur radio

My long-term desire has always been for everyone to live in peace, even though we may believe in different things, or nothing. We are all different, but all human beings. We are basically all the same.

Clearly what happened in Israel on October 7th 2023 was horrific. Nobody in their right mind would think otherwise. Israel has a right to defend itself from attack.

What I do not understand is Israel's response. Very many innocent people have been killed, maimed and made homeless. Their homes have been destroyed. Many are starving. Foreign journalists are unable enter Gaza to see for themselves.

What I cannot understand is how a people that suffered so much in WW2 can be so cruel to the people of Gaza. For every bomb and killing, more people will be recruited by Hamas! 

Surely the killing and starving of a people has to stop.

What is needed is everyone to change:  Hamas and the others in the region must recognise Israel. Israel must live in peace with it's neighbours.  Israel is fast becoming a hated state.

Many of my best friends are Jewish. To me this whole thing is senseless and ultimately fruitless.

Adsense crappery - NOT amateur radio

 As a blog owner I can see how many people are supposed to look at my blog every day. At breakfast time I was supposed to have had more visitors today already than some whole days last week!  

It seems a healthy dose of disbelief is needed when looking at these figures. 

Basically I do not believe them!

Chromebook - NOT amateur radio

As mentioned, my wife found my old Asus Chromebook yesterday. It was like an old friend returning. 

As a Chromebook it does everything I need in the lounge: browsing, blogging, YouTube, letters, spreadsheets and emails. It is very fast. 

I am using it now.

RSGB YouTube taiks

 Although I confess to watching few of these, the RSGB does regular live talks on Mondays at 1900z.

10m QRP WSPR (Wednesday)

 My 500mW W5OLF WSPR beacon was turned on at about 0815z.

UPDATE 0829z: No spots.

UPDATE 1037z: Widespread Es with 23 stations spotting me.

6m QRP FT8 (Wednesday)

My 6W from the IC-705 to the V2000 vertical omni antenna was turned on at about 0815z.

UPDATE 0824z:  6 English spots so far. See map.

UPDATE 1016z: 34 spots of me. Widespread Es.

Ferrite rod TX antennas

At some point in the near future I want to do more tests at very low power with a ferrite rod TX antenna. I have a small manual ATU which I can use. 

The best bands to try is 40m or 30m. Best mode would be WSPR but I want to try FT8.

See https://sites.google.com/view/g3xbm4/home/antennas/ferrite-rod-tx-antennas

UPDATE 0830z:  I have dug out the ferrite rod and ATU in readiness. Maybe tonight?

UPDATE 1628z: On 30m FT8 TX with the ferrite rod (vertical) matched via the Z match ATU. No ground.

UPDATE 1950z:  Although plenty of RX spots, nothing on 30m FT8 with the ferrite rod, so I have decided to try 30m WSPR.

Wednesday plans

 Weather permitting, I plan to do the same as yesterday going on 6m QRP FT8 and 10m QRP WSPR.

Sunspots - Wednesday May 21st

Solar flux is 119 and the SSN 46. A=13 and K=1.

20 May 2025

Summer bedding plants - NOT amateur radio


This morning we went to the local Garden Centre to buy some summer bedding plants. We will plant these tomorrow.

Simple FM bug

Not sure where this is legal , but I don’t expect the power to be very great. I guess you change frequency by adjusting turns on the coil. Might be a fun weekend project.

10m 500mW WSPR (Tuesday)

My W5OLF beacon was turned on about 0630z.

UPDATE  1334z:  So far spotted by just 2 stations in the Canary Is..

6m QRP FT8 (Tuesday)

My 6W was turned on at about 0630z.

UPDATE 1330z: 26 stations have spotted me.

UPDATE 1840z: 91 stations have spotted my 6W 6m FT8. Most I assume are Es. See map.

Tuesday plans

 Probably 10m WSPR and 6m FT8 all QRP.

VLF earth-mode experiments


Back in 2013 I tried an experiment to see where my VLF earth-mode signal could be received in the car. 

My TX was 5W into my grounded electrodes. On RX, I dragged a resonant loop behind the car receiving on a PC.  The earth-mode signal popped up at odd points many kilometres away.. 

Since my September 2013 stroke I have been unable to do field work.

Sunspots - Tuesday May 20th

 Solar flux is 117 and the SSN 66.  A=10 and K=2.

19 May 2025

Chromebooks - NOT amateur radio

This afternoon my wife found my Asus Chromebook, that had not been used for about a year. It was like finding an old friend. 

It is blisteringly fast and works really well. I have also downloaded BitDefender (free antivirus) although Chrome is pretty safe and my internet provider also has free antivirus and malware protection.

Driverless cars - NOT amateur radio

I understand that driverless cars are coming to the UK in 2027. I am not sure if this is generally or just taxis.

Once driverless cars become ubiquitous it will mean a revolution on the roads.  Initially I expect most accidents will be the result of human error with drivers of other cars on the roads making stupid mistakes!

It will take some time for people to gain confidence  (20 years?), but by then all cars will be driverless and the roads safer. It would not surprise me if we see a revolution in car ownership.  

By then, I expect I shall be dust pushing up daisies!

Anglesey Abbey walk - NOT amateur radio

 

We go for a walk in the grounds here quite often . This is the herbaceous garden that will soon be a riot of colour. It soon goes!

10m QRP FT8 (Monday)

My 6W from the IC-705 was turned on just before breakfast. 

UPDATE 1931z: 136 stations have spotted me today.  Best is Brazil.

Monday plans

These past few days I have been on 10m WSPR and 6m FT8.  I am unsure what to do today. 

Sunspots - Monday May 19th

 Solar flux is 118 and the SSN 53. A=22 and K=1.

18 May 2025

zBitx transceiver

This is a new transceiver from HF Signals in India. It is based around two Raspberry Pi units and is very low cost.

It would appear to be a little 'immature ' so expect some software and maybe some hardware tweeks soon.

I see somebody is doing custom front panels.

70cm UKAC (May 13th)

 

Although I often come way down, I put an entry in just now. The map shows the 3 contacts before I stopped after about 30 minutes.

Ely Bishop's palace - NOT amateur radio

 


This is  now part of the Kings School.  In WW2 it was a hospital where my  dad had his appendix removed  before joining the Pathfinders flying  Lancasters

10m 500mW WSPR (Sunday)

 My  QRP beacon was turned on at about 0830z. 

6m QRP FT8 (Sunday)

My 6W to the vertical omni was turned on at about 0830z So far just English stations have spotted me. 

UPDATE 1440z: 30 stations have spotted me. 

Sunspots - Sunday May 18th

 Solar flux is 117 and the SSN 58. A=38 and K=3.

17 May 2025

Inside Ely Cathedral - NOT amateur radio

This was built in 1080. It is hard to think people have worshipped here in this building for around 1000 years.  It's our local  cathedral that can be seen from miles away. 

6m 6W FT8 (Saturday)

My gear was turned on at  0837z. Already spotted by 15 stations including one in Portugal. 

UPDATE 1612z : 116 stations have spotted me today. See map. 

10m WSPR (Saturday)

 My 500mW beacon was turned on at  0836z.

UPDATE 0906z: Spotted by 1 Austrian  station. It's interesting that this station has spotted me 10 times  but not a single spot  from central Europe on 6m FT8. 

UPDATE 1521z: 19 stations have spotted me today. 

Sunspots - Saturday May 17th

 Solar flux is 117 and the SSN 57. A=39 and K=3.

16 May 2025

10m 500mW WSPR ( Friday)

My little beacon has been on most of the day with no spots. Maybe something is wrong?

UPDATE 1550z:  As far as I can see everything is correct. Reset the time sync..

6m QRP FT8 (Friday)

My 6W FT8 has been on much of the day .

UPDATE 1616z: So far today spotted by 75 stations with the furthest Israel. See map. 

Lunch out - NOT amateur radio

 We had lunch out in Ely today. My wife had a healthy starter, but mine was less so 😉.

Sunspots - Friday May 16th

 Solar flux is 119 and the SSN 45. A=13 and  K=3.

15 May 2025

Human consciousness - NOT amateur radio

Death puzzles me. 

When we die we no longer have brain cells so whatever makes us who we are no longer exists . We really know so little. 

Indeed I cannot know if anyone really exists! To me,  time is real and  passes, but I have no way to tell if this is there for those  other than me! 

Maybe  the whole universe is just in my head and is unique to everyone. 

Do we really have memories or are we just programmed to think we have  memories?

Maybe I think too much!