Yaesu FT7

My first ever Yaesu rig was the 10W FT7, which I bought second hand in 1979. By modern standards it was big, but it was a great rig, enabling me to work 10m SSB QRP DXCC in the 1980s. Being this old, WARC bands were not included and on 10m, it only covered 500 kHz. 

Later, they brought out a 50W version (the FT7B) that covered all of 10m in 4 switched bands. Synthesizers and memories were in the future, so it had an analogue VFO. The RX was very quiet. It was one of the best rigs I have ever owned.

Several Yaesu rigs have been owned and I like Yaesu products, but feel they lost their way in recent years. Let's really hope they survive.

See https://sites.google.com/view/g3xbm4/home/hf-mf-and-lf/commercial-rigs/yaesu-ft7 .

Re-thatching - NOT amateur radio

Thatched cottages need new roofs from time-to-time. They keep houses warm, but new thatch cannot come cheaply. We saw this a few days ago.

10m QRP FT8 (Thursday)

 

Spots of my QRP 10m FT8 to 1035z today

At the moment, I am on 10m FT8. So far 42 stations spotted at 0855z and I have been spotted by 4 stations.

UPDATE 1035z: 166 stations spotted by me and I have been spotted by 22 stations.

UPDATE 1335z:  561 spots of others and 106 spots of me, plus a few QSOs, although I have not called others.

Sunspots - Thursday March 2nd 2023

 Solar flux is 162 and the SSN 105.  A=8 and K=1.

Those royals - NOT amateur radio

Allegedly, according to unconfirmed reports, Harry and Megan have been served an eviction notice on their 10 bedroomed cottage on the Windsor estate. This has been offered to Prince Andrew who lives in a 31 bedroomed house. How hard life must be!!! Just think of the heating costs and the dusting. 😉😉

Solar data updated

My favourite site for solar data has been updated. It still expects solar maximum November this year. If correct, this is very early.

See https://www.solen.info/solar/ .

First car memories - NOT amateur radio

On the way to Cambridge, this Morris 1000 was spotted. As our very first car in 1971 was a green Morris 1000 just like this, it triggered some happy memories.

10m QRP WSPR TX (Wednesday)

At the moment, I am on 10m WSPR TX with my 500mW beacon. Just 3 stations spotting me. Openings to the USA seem to have dropped off of late.

UPDATE 1535z:  Still just those 3 stations spotting me today on 10m WSPR.

Wicken - NOT amateur radio

This photo was taken some years ago at Wicken about 5 km away. 

Sunspots - Wednesday, March 1st 2023

Solar flux is 161 and the SSN 100.  A=28 and K=1.

10m QRP WSPR (Tuesday)

My QRP 10m WSPR 500mW WSPR beacon was turned on at 1154z.

UPDATE 1211z: Copied by FR1GZ (9724km) on Reunion, so it works.

UPDATE 2130z:  A really poor day with spots by just 3 stations

8m QRP FT8 (Tuesday)

After several days absence, I am again on 8m QRP FT8. Conditions on 10m looked promising, so it was worth a go. My 8m FT8 gear on 40.680 MHz was turned on at 1141z. As the USA has not been spotted on 10m FT8, I am not too hopeful of getting "across the pond" on 8m today.

Just remembered! I can go on 10m QRP WSPR TX at the same time with my 500mW beacon.

UPDATE 1407z:   No spots yet on 8m FT8. Interestingly, I had to change my PC. The power on 8m seems to be holding up better over time. This suggests the audio level into the FT817ND was dropping, not the FT817ND losing power as it got warmer.

UPDATE 1454z:  No 8m spots. Nothing seen from the USA on 10m WSPR TX, so I suspect my 8m FT8 QRP stands very little chance now until the Es season starts again.

UPDATE 2120z:  Windows PC has packed up under warranty. So, needs to be fixed or replaced.

Pye Telecom PF8

In the end, we did not sell that many of these at Pye Telecom. It took a lot of time to get to market and, really, it was not worth the effort. It has some innovative ideas for its time: it used a multi-layer PCB (a first at that time), a DC-DC converter (what a nightmare!), an internal antenna, looked before its time like a cellphone, no external parts to break,etc..

It featured on TV in "The Professionals".  

Some were converted to 70cms. They are rare these days and I do not have one! Your best bet is eBay. There is a PDF manual on my website.

See https://sites.google.com/view/g3xbm4/home/vhfuhfmicrowaves/vhfuhf-commercial-rigs/pye-pf8 .

Solar conditions

The sunspot count remains respectably high with counts of over 100 most days. My favourite site for solar data is still showing the next solar peak as Nov 2023, which seems quite early. Figures are usually revised in the early days of the new month.

See https://www.solen.info/solar/ .

Super VHF DX

In July for many years, stations in Europe have been able to work stations on 6m (VHF) in Japan. A look at the map will show this is a very long way. 

The most credible explanation is this is caused by ionisation in the mesosphere linked to the formation of noctilucent clouds that form at this time. From research, this path could work at even higher frequencies, possibly microwaves! What is needed is for keen people at each end to try. 

This is definitely a case when research by radio amateurs could advance radio science. There is much to be gained from this research. I think noctilucent clouds are becoming more common as a result of climate change, but don't quote me on this. Certainly Far East stations have been spotted here on just a vertical omni on 6m FT8 for several years in July.

Now is the time to arrange some skeds on 2m, 70cm or 23cm. Records could tumble.

See https://sites.google.com/view/g3xbm4/home/vhfuhfmicrowaves/super-dx .

10m QRP FT8 (Tuesday)

After just a few minutes (it is now 0938z) 5 stations have spotted me and I have spotted quite a few stations in Eastern Europe using the QDX. This looks like single hop F2 propagation. To be honest, conditions are better than I was expecting.

UPDATE 1106z: 40 stations have spotted me and I have spotted 118 stations here. Conditions are definitely better than I expected, so 8m FT8 (or WSPR) is worth a try later.

Plans for Tuesday

At first, I shall try 10m FT8 using the QDX transceiver. If successful, I may try 8m FT8 later. I am toying with trying 8m WSPR at 1W around 40.680 MHz. 

Pye Telecom/Philips - NOT amateur radio

Most of my working life was in design in the Pye Telecom days. Although Philips bought Pye in the late 1960s, it was very "hands off" for years. Eventually we badged some products Philips such as this PF85 shown here. It was a good product with some truly great engineers. After the late 1980s I think most products were badged Philips. The PF85 and the PFX shared many modules.

Sunspots - Tuesday February 28th 2023

Solar flux is 161 and the SSN 192. A=94 and K=4. 

Tree stump - NOT amateur radio

Yesterday, we went for a delightful walk at the nearby village of Dalham in West Suffolk. On the way we passed through an avenue of trees up the hill to the church. We passed this old tree stump.  I bet this old tree had seen some history.