Someone asked for access to this file. It is now open so if you have this link you should be able to read it. It was sent to me some years ago.
See https://drive.google.com/file/d/16vtYNznORclXJTfpaT-RC7Z3IV8RKqyi/view?usp=sharing .
10 Apr 2023
6m FT8 (Monday)
For about an hour, I have been on 6m FT8. So far, 13 stations have spotted me and 1 have had 1 QSO. I noticed the BNC plug was intermittent. Mending it took about an hour. In years gone by this would have taken me 5 minutes.
80m FT8 (Monday)
At 1255z, I moved from 160m FT8 (no spots) to 80m FT8 using the earth-electrode "antenna" in the ground. The FT8 frequency on 80m seems to be 3.573 MHz.
160m FT8 (Monday)
As my earth-electrode "antenna" is now matched, I am currently using it on 160m FT8 with 10W from the FT-710. No spots, although I am not surprised in daylight. I must double check on the 160m FT8 frequency in Europe. I have never tried FT8 on topband. I have used WSPR in the past. Currently I am on 1840 kHz FT8, which seems right.
UPDATE 1120z: This looks a useful resource for digital modes in Europe. See https://www.pa8s.nl/knowledge-base/frequencies-for-digital-modes/
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| Spots of me at 1814z |
UPDATE 1856z: 15 stations in 7 countries have so far spotted my 10W FT8 on 160m this evening in the daylight. And the antenna is invisible to my XYL!
UPDATE 2005z: My first FT8 QSO on topband with GM8IEM (753km). Although I was in beacon mode and not answering calls earlier, I see I was called by several stations including one in Denmark. 21 stations have spotted me tonight Now QRT on 160m FT8.
Museum open again - NOT amateur radio
Yesterday, after what has seemed a long winter, our local museum and windmill next door reopened. The weather was sunny and pleasant. Parking near our house is not usually an issue. It was yesterday!!
Monday plans
My main aim today is to match my earth-electrode "antenna" on MF. I I can do this, I can try it on FT8 or WSPR TX on 160m or 80m.
Later, I may try 10m QRP FT8 again with the QDX, although it does not teach me much - I know less than 5W of FT8 can get spotted across the planet. All these stations could be worked, but I do not have the energy to chase these!
UPDATE 1021z: After adding more turns to the primary of my 3C90 transformer I can get a perfect match on 160m and 80m with my earth electrode "antenna" with the auto-ATU in the FT-710. I shall try 160m WSPR or FT8 tonight!
2m activty contest (UKAC) last week
Last Tuesday was the activity contest organised by the RSGB. My incredible score (I am joking!!) has just been submitted as I almost forgot. Tomorrow evening is the 70cm activity contest.
The impression I am getting is interest in this contest is waning with the FT8 contest on the following evening doing better. This is pity as it is a very "un"contest contest with people happy to see the activity levels up. I have been taking part for several years.
Earth-electrode "antenna"
My earth-electrode "antenna" has been reinstalled.
Much to my surprise I am unable to tune it using the internal auto-ATU suggesting the impedance is greater than 150 ohms.
I shall have to try a new matching transformer to bring it in range of my auto-ATU. This make take a few goes. I want a good match at MF.
9 Apr 2023
Rain Gauge - NOT amateur radio
One of my wife's Christmas presents was a rain gauge. We record the rain that has fallen each day and total up the month. February was very dry and, so far, in March, we have already had more than the whole of February!
2m Fredbox QSO
This was in 2011 and shows me in QSO with the 10mW 2m AM Fredbox. Many years ago I had a cross channel QSO with it handheld. These days it is hard enough having an FM QSO on 2m!
See https://sites.google.com/view/g3xbm4/home/vhfuhfmicrowaves/homebrew/fredbox.
Grand master? - NOT amateur radio
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| Playing chess with one of my grandsons |
There is no way I am good at chess!
A very useful app is https://www.chess.com/ where you can play against others online or against the computer.
The more successful chess players think well ahead - unlike me!
8m band
This is midway between 10m and 6m. It is only allocated to the Amateur Radio Service and in a few countries it has been allocated for experiments only to a handful of stations. In some cases this is very reluctantly.
It is my view that others could gain access without a licence in the ISM band from 40.66-40.70 MHz as long as local conditions are fully met. You need to convince yourself of the legality. In the UK this means 10mW ERP. On WSPR, this can go a very long way. In Australia 5mW of 8m WSPR has spanned 5000km!
In the next few months in the Es season 10mW ERP will definitely allow UK stations to be copied across Europe on 8m WSPR.
With sunspot numbers high at the moment, the F2 MUF exceeds 42MHz on occasions so very long distances are possible at times with FT8 or WSPR even with QRP.
See https://sites.google.com/view/g3xbm4/home/vhfuhfmicrowaves/8m-band .
8 Apr 2023
Soon to be obscured - NOT amateur radio
Yesterday, some of the hedge on the south side of our garden was cut back. The view of the village church about 300m away is now very good. In a few weeks' time this will be obscured by leaves on the trees.
Now this foliage is cut back I want to replace my earth-electrode "antenna". In a few weeks this will be much harder.
10m QRP FT8 (Saturday)
My 10m FT8 with the tiny QDX transceiver was turned on at 0835z.
UPDATE 1140z: 149 stations spotted and 42 stations have spotted my 10m FT8 QRP today with the QDX.
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| Stations that spotted my QRP today with the tiny QDX |
UPDATE 1909z: 216 spots of my 10m FT8 QRP today with the QDX.
Plans for today
One of my aims for today is to reinstall my earth-electrode antenna in the ground and try it out on MF with the FT-710. I shall probably go on 12m or 10m FT8 with the tiny QDX.
Absent friends?
It is odd how you do not see postings from people you know about for a while and then realise they are not there. Many times there is a good reason and they pop up again. For some time I have not heard from Mike Rainey W1TJ or Jay Wilson W5OLF. Just wondering if they are OK? If you have any news please let me know. They're kind and generous people.
First swallow seen - NOT amateur radio
See the RSPB website for details: https://www.rspb.org.uk/birds-and-wildlife/wildlife-guides/bird-a-z/swallow/
7 Apr 2023
Simple 10m FT8 RX as the Es season approaches
Now seems a good time to remind people of my very simple 10m FT8 receiver, the 10FT8R. Even buying all parts new, I doubt it would cost more than 4 cups of coffee out. It allows the "big rig" to be used for something else whilst keeping a watchful eye on 10m FT8. The design uses low cost crystals and a Polyakov mixer that requires injection at half frequency in a direct conversion RX. The design appeared in RadCom last year. It works remarkably well. My thanks to Jay, W5OLF for doing the schematic drawing.
See https://sites.google.com/view/g3xbm4/home/hf-mf-and-lf/homebrew/10ft8r-rx .
10m FT8 QRP with the QDX (Friday)
Again, I am on 10m FT8 QRP with the QDX which runs less than 5W. It is now 0925z and I have been on for about 10 minutes. So far, spotted by 1 station 4X1UF (3513km) and 4 stations spotted on 10m FT8 RX.
UPDATE 1550z: So far today, my QRP 10m FT8 spotted by 57 stations on 5 continents.
Oscar 100 narrowband transponder
Every few weeks I like to give an update on activity levels on this geosynchronous satellite by looking at the web SDR at Goonhilly Downs in Cornwall. The last time I looked was late afternoon in the UK on a Thursday. Activity levels remain low.
See https://eshail.batc.org.uk/nb/ .
6 Apr 2023
OFCOM updates
A reminder that OFCOM updates the data it holds on us every week. Check the OFCOM website for details.
Earth-electrode "antenna"
This has been used for many years from VLF-60m with great success. After cutting back some bushes, I want to replace this and try it on 630m, 160m and 80m. Although theories vary, I think it acts as a loop in the ground at MF. It certainly works remarkably well.
Most of the path is in the ground with just the return wire from the far electrode along the fence. Tests with the return wire on the ground at 630m made little difference, so most of the radiation is from the loop in the ground.
If my theory is correct, the effective loop diameter gets bigger as you move LF. At 2200m it should be even better!
African migrant birds - NOT amateur radio
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| Swift |
Locally swift numbers did not seem down on normal. Swifts usually arrive here in numbers mid May. Often they are heard screaming in the sky before they are seen. "They are back", goes out the cry and all is still well with the world. Not yet...
See https://www.rspb.org.uk/birds-and-wildlife/wildlife-guides/bird-a-z/swift/.
Fresh green - NOT amateur radio
10m QRP FT8 (Thursday)
Since about 0700z, I have been on 10m QRP FT8 with the tiny QDX transceiver, which runs just under 5W. At 0825z, 12 spots of me with the furthermost A61R (5589km).
UPDATE 0920z: 15 stations have spotted my QRP 10m FT8 today and I have spotted 22.
UPDATE 1025z: 26 stations have spotted me and I have spotted 42 with the QRP QDX.
UPDATE 1248z: Spotted by 79 stations so far with the furthermost PY1SX (9306km). 5W or less on 10m FT8 seems quite enough!
UPDATE 1324z: Spotted by 90 stations.
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| Stations spotting me at 1434z on 10m QRP FT8 |
UPDATE 1434z: Spotted by 124 stations in 5 continents. QRP reins!!
UPDATE 1733z: Spotted by 171 stations.
UPDATE 1910z: 173 stations have spotted my 10m FT8 QRP today. Unlikely to get any more spots today.
5 Apr 2023
Coffee in the garden
Our son came to stay with his son and we were able to enjoy coffee in the garden.
Donald Trump - NOT amateur radio
It is impossible to know if the ex president of the USA is guilty of the crimes of which he is charged. What I do know is unless he is found guilty, his chances of re-election in late 2024 increase.
At the moment, the USA seems very polarised. I really cannot understand why the USA cannot find younger candidates. If either Biden or Trump stand and get in they would be very old men!
Finland joins NATO - NOT amateur radio
Although not a political animal by nature, I can understand why Finland has joined NATO. It is the 31st member state sharing a very long border with Russia. It feels safer as a nation within NATO, knowing that if it was attacked all the NATO countries are duty bound to support it. It looks like the invasion of Ukraine has had the exact opposite effect with even more NATO countries on its borders.
Personally, I just wish all countries could live in peace and harmony as defence spending is, ultimately, a total waste of money.
QDX on 10m FT8
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| Stations spotting my QRP 10m FT8 TX today |
UPDATE 1955z: 64 stations spotted my QRP 10m FT8 today with the QDX transceiver.
XBM80-2 transceiver webpage
See https://sites.google.com/view/g3xbm4/home/hf-mf-and-lf/homebrew/80m-xbm80-2 .
UPDATE 1700z: I think I have solved the problem and the link to Jason's Gerber file is now on the webpage.
4 Apr 2023
2m activity contest (UKAC)
This evening is the first Tuesday of the month. The RSGB organised activity contest starts at 1900z. I usually go on for a little while with 2.5W and my big-wheel omni antenna. I usually make 5-10 contacts. FT8 is usually easier for me with my poor voice!
UPDATE 1936z: After just 3 contacts, I just gave up. Some decent DX, but my voice was exhausted with too much shouting! If I had more stamina, I am sure I would have had plenty of contacts.
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