Moonbounce from Aricibo

The Arecibo Observatory Amateur Radio Club KP4AOwill be putting the 1000-foot radio telescope on the air for 432 MHz EME from April 16-18. It can be heard with a small hand-held yagi pointed at the moon. A 15 dBi antenna and 100 W will be enough to work us on CW.

Times of operation are:

April 16: 1645 - 1930 UTC,
April 17: 1740 - 2020 UTC,
April 18: 1840 - 2125 UTC

Tx Frequency: 432.045 MHz,
Rx Frequency: 432.050 to 432.060+
Tx power: 400 W,
Antenna gain: 60 dBi

Antenna feeders

Today I have to move my two main antenna feeders which wind their way untidily through the house from the back of the house, where they enter the building, to my shack in a front bedroom. This means getting up into the small loft space to run the cables across and down. Some years ago I had a bent end fed antenna on 10m squeezed up there and it managed to get to South America on QRP SSB. A small ground plane for 10m (with a capacity top hat to shorten the vertical section) would probably perform quite effectively.

UPDATE: Job done. It took about 1 hour and everything is fine.

VLF Chorus audible in UK this morning

Auroral Chorus, a natural VLF emission that sounds like birdsong is audible in the UK this (early) morning. It is still audible at 0650z. Check out the VLF natural radio receiver at http://abelian.org/vlf/test.html as soon as possible, as it will soon be gone.

Operating on 40m

This evening, as my wife was busy watching the TV, I decided to go onto 40m SSB with 10W pep and see what was about, not chasing DX. I worked a special event station OZ2SPACE  and a couple of other stations in Europe. Actually I must confess that this sort of rag-chew operating rather bores me these days: I'd far rather be building something or experimenting with WSPR. Working DX with QRP is fine on the other hand.

G3XBM's 500kHz article in May's Practical Wireless

The follow-up article on my 500kHz transverter and WSPR experiments appeared in the May edition of Practical Wireless today. I hope it encourages a few others to give 500kHz a go, especially as my approach is a simple and easy one.

DF6NM and DK7FC active on 8.97kHz today

Not one, but 2 stations were active on 8.97kHz today in DFCW mode. Part of DK7FC's transmission was copied at 902kms away in Warsaw and DF6NM, running a much smaller station and antenna, was copied 21kms away. A first QSO on the 33kms band cannot be too far away now!

4th Amateur VLF test transmission on 8.97kHz this weekend

Stefan DK7FC is planning to transmit again on 8.97 kHz VLF if the wind is able to support his kite antenna. The tests start Saturday April 3rd, at around 1000 UTC. The mode used will be DFCW-600 (dual frequency very slow CW). Several stations across Europe will be listening some using tiny E-field probe antennas.

Temporarily QRT - shack becomes grandson's bedroom!

It had to happen sooner or later: our elder grandson, now 2.5yrs old, is staying with us a couple of times in the next few weeks as his mum and dad pack to move flat. Tonight he moved from the usual travel cot to a real bed for the first time .....in my radio shack. So, I shall be unable to operate evenings for a while so no 500kHz WSPR I'm afraid. Daytime operation may be possible, but apart from 10m WSPR I doubt I'll be able to do any serious operating. In the meantime he is fast asleep and looking very cosy.

500kHz WSPR - fewer stations around now

500kHz WSPR has gone rather quiet of late with fewer stations on most evenings. So far only M0BMU has reported me tonight, despite my report being pretty strong. A new 500kHz WSPR receiving station this evening is OY6FRA and it would be great if he could hear me 1164kms to the north. This would not be a new DX record but it would be another new country. The OY6FRA club station's antennas are shown on the left.

Sunspots on track

Latest graphs (March 2 2010) from the NOAA space weather site suggest that the smoothed sunspot number predictions are on track with a maximum of 90 forecast to occur in May 2013. This is not a high number but would still suggest excellent conditions on 15,12 and 10m from later this year until 2015. If you have not experienced 10m when wide, wide open then you are in for a nice surprise: dust off your QRP rig, put up a 16 foot long dipole and work the entire world!  Better HF conditions are already here and they will only get better still as the year progresses.