27 Aug 2021

Kitten sitting - NOT amateur radio

As one of our sons is on holiday, we are calling in to his home to look after his kitten which is very playful. 

Here he is about to chase and pounce on a toy.

XBM80-2

 



Yesterday, I posted the 10m Lesser Chirpy. This was based on the 80m XBM80-2 QRP CW transceiver which is shown here. 

You would be hard pressed to make this transceiver much simpler! Do not be afraid to experiment - I am sure you can do better. 

S1 provides offset between RX and TX by shifting the crystal frequency, how much will depend on C1. You could always make C1 adjustable so the offset is what you want.

See https://sites.google.com/view/g3xbm4/home/hf-mf-and-lf/homebrew/80m-xbm80-2 .

SPAM - NOT amateur radio

Usually the SPAM filter on my Gmail works well. Just occasionally it thinks a genuine email is SPAM, but this rare. I'd guess this is less than 1 in 1000. 

Recently I have been getting SPAM emails in my inbox about my subscription for Norton antivirus. The spelling and grammar are appalling. Usually I just report this as SPAM, I guess they are using many email addresses so this gets through SPAM filters. I do not use Norton!

Sunspots - Friday August 27th 2021

 Solar flux is 89 and the SSN 47.  A=6 and K=3.

26 Aug 2021

Maturity - NOT amateur radio

The berries and fruit in the garden are reaching maturity. 

The photo shows this with the windmill in the background.

Lesser Chirpy

When I was fitter, I enjoyed designing and building. Sadly this is much harder now. Like all of my circuits, I am sure they can be improved. I make no claims for originality and take inspiration from many sources. My wish is that you use my circuits as the starting point for your own ideas. 

Looking back many years, I designed the Lesser Chirpy for 10m CW. Originally I started with the Chirpy, but it chirped too much! The Lesser Chirpy more or less stopped the chirp. This was a "for fun" rig. It does work, but I was concerned about calling CQ over weaker stations as the RX sensitivity was not as good as modern rigs. My recommendation is ensure that calls are not made over other stations. Fine to call others, but be very mindful of other stations.

The original name was the XBM10-2, but Lesser Chirpy was more meaningful!

See https://sites.google.com/view/g3xbm4/home/hf-mf-and-lf/homebrew/10m-lesser-chirpy .

Garden flowers - NOT amateur radio


Most of the flowers in our garden have passed their best. Some still look good whereas others are starting to look a bit tired. We will put winter flowering plants at the front and new bedding plants in late in the spring. Some, as the photo shows, look good still.

It is funny how the nights get so much darker earlier at this time of the year. The rate of change speeds up and the change is noticeable.

Cambridge UK - NOT amateur radio

 

Like most places, this year has been strange, with few visitors from overseas in Cambridge, so the locals and UK visitors have been able to enjoy it differently. We went into Cambridge yesterday. It was quieter than normal, but not much.

The photo shows the park behind the bus station.

10m FT8 QRP (Thursday)

After a brief TX period with 2.5W with just 1 spot by G4KPX (13km), I am again 10m FT8 RX only. At 1127z, just one station spotted - HB9SNR (784km).

UPDATE 1803z:  Just 2 stations spotted so far today. Es is "sporadic" and today, so far at least, looks poor on 10m FT8 RX. As far as I can remember this is the poorest day on 10m for some months.

UPDATE 1815z:  Did I speak too soon? F1RAD (867km) in SW France spotted on 10m FT8 RX.  Also my 2.5W was spotted by local G4BAO (8km).

Rally news

As far as I know, the Torbay rally on Sunday August 29th and the Huntingdon club (HARS) rally on Monday August 30th are ON, but the Milton Keynes rally on Bank Holiday Monday has been postponed until next year (2022). 

As always check before setting out.