7 Jul 2010

Miracle Whip Yahoo group

Many years ago now I started a Yahoo group for people interested in the Miracle Whip and similar antennas. Amazingly the group now has over 1200 members.  Opinions vary about the effectiveness of the MW - in my opinion it is a compromise antenna that is inferior to many simple whip antennas - but it is easy to tune and with a counterpoise or reasonable ground does allow DX contacts on all modes when conditions are decent. See http://groups.yahoo.com/group/miraclewhip/ .

5 Jul 2010

French wedding

These last few days we've been enjoying our son's wedding in Brittany, France where the weather, company, food and wine have been great. Unlike an English wedding, this one has taken 3 days to get through! Great fun though with a day dedicated to eating crepes (pancakes) yesterday followed by a siesta in a meadow under the oak trees!

29 Jun 2010

Solar flux levels

We're now months into cycle 24, yet the solar flux levels are showing little signs of rising much: they're still in the mid 70s only and the sunspot count is below 20. Recent predictions have suggested it's going to be a very weak cycle and events so far confirm this. However, the sun throws surprises and in 6 months time the picture may be better. We can only hope. See http://www.solen.info/solar/

300m long kite antenna for VLF transmission

Stefan DK7FC has now received permission from the German authorities to use a 300m long kite antenna in daylight to transmit below 9kHz. With this antenna, 200m longer than his previous one, he should be able to run up to 16mW ERP which is 10dB more than when he lasted tested on 8.97kHz. A stronger signal should allow more stations to copy his signal.

28 Jun 2010

GQRP Limerick Sudden kit

The GQRP club (subs £6 per year - excellent value) is now selling the Limerick Sudden kit. This is an improved version of the classic Sudden direct conversion receiver for various single HF bands. The cost includes everything you need including battery , knobs and case. See http://www.gqrp.com/sales.htm. Members Price - only £34.00 (Non members £40)

27 Jun 2010

Supporting MS research by skydiving

A young friend of ours, Josie, has multiple sclerosis (MS) very badly and it has devastated her life in many ways. Undaunted, yesterday Josie did a skydive to raise money for the MS Society charity. So far she has raised over £1500. She is so plucky. If you care to give something please visit http://www.justgiving.com/Jo-Hardiman. Two others in our family have had MS, one of whom died a few years ago. It really is a most awful condition that robs, mainly young people, of their hope and future. Josie's uncle was Len G4IRZ.

Not quite QRP - the Haiku Omega VLF transmitter

Jim M0BMU has posted a link on the LF reflector to a site showing the Omega beacon antennas and transmitter at Haiku Valley in Hawaii. This very accurate beacon system operating just above 10kHz. It has now closed being largely replaced by GPS. My house and entire garden would fit twice in the room shown as "the dummy load room".

26 Jun 2010

VHF NFD next weekend

Next weekend it is VHF NFD so there will be a good opportunity for some QRP DXing on the VHF bands. In past contests I've managed to work way up to Scotland from here with just a small halo and 5W. This sort of DXing sometimes requires going on to CW to complete contacts though. Best times, ignoring conditions, are usually early Sunday morning as the sun is rising, when tropo conditions are good, or late in the contest when stations are looking for new stations to work.

Kanga Products kits

The well known range of QRP kits from Kanga are now available again in the UK. These include the FOXX3 transceiver and the Sudden receiver. See the Kanga Products UK website.

Live 8.97kHz transmission from Germany

DK7FC is transmitting now (0800-1100z) on 8.97KHz. His signals are visible on his 8.97kHz grabber . Stefan is testing further improvements to his earth electrode antenna. The message is very clearly "73" sent in DFCW 600.