4 Mar 2018

2m FT8 RX (again)

This is getting addictive! Again, I am monitoring 2m FT8. In the last 6 hours 6 unique stations in 3 countries with best DX F6EAS (387km) in Normandy. Again I am using my big-wheel horizontal omni antenna. Gain is about 2dBd.

UPDATE 1030z: Already 14 uniques in 3 countries.

UPDATE 1400z: Now 24 uniques in 5 countries in the last half a day on 2m FT8 RX. I can honestly say that 2m FT8 has been a revelation. Every day seems to result in spots of stations at great distance, even though my antenna is nothing at all special and with hardly any gain over a dipole. Imagine the results with a 9 element beam!

UPDATE 1430z: Now 28 uniques in 7 countries on 2m FT8 RX with best DX DK2DTF (644km).

UPDATE 1622z: Now 30 uniques in 7 countries today on 2m FT8 RX.

UPDATE 1905z: A local friend G3TFX has suggested I try vertical polarisation to see how much difference this makes, especially with DX signals. If tropo, I'd expect about 15-20dB polarisation loss. If aircraft reflection, the difference should be far less. The overall gain of the big-wheel with feeder loss is probably about 0dBd. The feeder loss and gain of my V2000 vertical is probably much the same. So, tomorrow I'll try 2m FT8 RX with vertical polarisation.

3 Mar 2018

Eddystone Receivers

When I first got interested in the hobby in the early 1960s Far Eastern transceivers were unheard of. Many used war surplus receivers like the AR88 or CR100. For years I coveted an Eddystone EC10. One day I got one. The IF was low and the bandspread on 10m was abysmal! As a tuneable IF for VHF and UHF converters it was fine. Overall, it really was not a very good receiver. These days they are hard to find and really not worth the money.

The 840C was a much better radio. At one time they even did an amateur band only receiver called the EA12.

See https://sites.google.com/site/g3xbmqrp3/hf/ec10

Slapton Line - NOT amateur radio

This is also known as Torcross Line, Devon. In WW2 is was used as a place where D-day landings were rehearsed.

Sadly, a big stretch of the road along it was washed away and it is quite possible it will never be repaired. In the end the sea will inundate the freshwater lake known as Slapton Ley. This could be soon or in 50 years' time.

The question is how long do you keep re-building the road (A379) that runs along it? This stretch is one of the best views in the UK.

Online shopping - NOT amateur radio

Shopping online is quite common these days. I have successfully bought lots on line. However, it is not always a good story.

Recently I bought a couple of batteries for my watch via Amazon. Usually these last several years but one failed after a month despite it being a branded item. Cost-wise I probably saved several pounds even so. The second battery is still working fine.

I also bought a spare head and cutters for my electric razor. Even after a few months they struggle to cut, whereas the originals lasted years.

All I am saying is caveat emptor. Most things will be inexpensive and work fine, whereas some things may be problematic.

50 years - NOT amateur radio

It seems hard to believe, but my wife and I first met 50 years ago today.

Looking back, I just wonder where those years went. Even today, knocking on the door of 70, I still feel in my late teens inside. All I can advise is milk life, as it soon slips through your hands.

Time is an odd thing. On the one hand it seems to pass slowly, whereas on the other hand it passes all too fast. One thing is certain: we will not get another 50 years!

Sunspots - Saturday March 3rd 2018

Solar flux is 67 today and the sunspot number 11. A=4 and K=1.

2m FT8 RX

Although I am monitoring 2m FT8 RX again, there have been no spots so far today. Perhaps we have had a lift in the last few days and things are returning to normal?

UPDATE 1030z: An FT8 QSO on 2m with G8ALS (127km) and PA4X (403km) spotted in Limburg. Perhaps it was too early!

UPDATE 1126z: Now spotted 15 uniques in 3 countries. I had a QSO (2m FT8) with David G0LRD (26km) when he was using 1mW and good copy on the big-wheel. He was -21dB on a 3el in the loft with 300uW!!

UPDATE 1350z: Now 30 uniques in 5 countries.

UPDATE 1730z: Now 39 uniques in 7 countries.

UPDATE 2030z: The photo shows the stations spotted here on 2m FT8 in the last 12 hours.

2 Mar 2018

South Devon Storm Damage - NOT amateur radio

As some may remember, I come from the South Hams, Devon.  In the recent bad weather a lot of damage has been caused along Start Bay. My niece sent me some links. In 50 years' time the coast will be very different, probably not in my lifetime, but almost certainly in the lives of my grandchildren.

https://www.facebook.com/forestandbeach/videos/1927135213995457/

See also https://www.devonlive.com/news/devon-news/gallery/damage-a379-torcross-1295121

2m big-wheel antenna

For a couple of years now I have used a big-wheel horizontal omni antenna on 2m. This is the antenna used in the last few weeks on 2m FT8. It has a near omni-directional horizontal pattern, a little bit of gain and, of course, does not need a rotator. It is ideal for my sort of 2m operation.

See https://sites.google.com/site/g3xbmqrp3/antennas/bigwheel

The linked page needs updating and this is on my "to do" list!

More UK rallies

As the weather is bad, I urge you to contact the rally organisers before starting your journey.

4 MARCH 2018 : GRANTHAM ARC RADIO AND ELECTRONICS RALLY

Grantham West Community Centre, Trent Road, Grantham NG31 7XQ. There is car parking facilities on site and talk-in will be available. Admission is £3. There will be trade stands, special interest groups and an RSGB book stall. Contact Kevin, G6SSN, 07793 142 483, g6ssn@btinternet.com.


4 MARCH 2018 : EXETER RADIO & ELECTRONICS RALLY


America Hall De La Rue Way Pinhoe, Exeter EX4 8PW. Traders, bring & buy, catering. Opens 10.30am (disabled & B&B book-in 10.15am). May open earlier if WX bad and traders are ready. Admission £2. Details from Pete, G3ZVI, 0771 419 8374, g3zvi@yahoo.co.uk.

A list of rallies can be found at http://rsgb.org/main/news/rallies/