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I am a great supporter of the GQRP club. Their quarterly magazine SPRAT represents the very best in Amateur Radio. If you are interested in QRP then please join the GQRP Club. It is excellent.

There is now a new, up to date version of the DVD with all back copies of the excellent SPRAT magazine.  If I had to stop all subscriptions and magazines then the GQRP club (and SPRAT every quarter) would be the only one I’d keep  – it is that good.

Hi

Tony & I have been working away and we have produced the latest version of the Sprat-on-DVD. This includes all Sprats right up to the one that has just been sent to members (number 160).

It is now available to members at £5 plus £1.20 postage. I will have them at the Galashiels rally and at Rishworth of course. The local guys who represent us at some of the other rallies will also have some shortly.

As we have known that this issue has been on the way for a while, as a concession, we will let anyone who bought the current DVD (1 to 148) after 1st August this year, have a copy of the new DVD for the special price of £2.50 including postage. To get this deal, you have to tell me when you bought the old DVD – if at a rally, which rally it was, and send me the CD case paper label together with the £2.50 in stamps. I do not want the actual DVD, just an assurance that you will destroy it when you receive the new one.

I should add that this is for members only of course, and applies just to UK members! Overseas members who think they also qualify should contact me direct and we may be able to work out a deal for them also.

Overseas prices are on the club website – http://gqrp.com/sales.htm

The new DVD is available to non-members at £12 plus the appropriate postage.

Thanks

73

Graham

G3MFJ

http://physics.princeton.edu/pulsar/K1JT/WSPR4.00r4171.exe

This is a beta release of WSPR (version 4.0). It has worked fine for me.

This is the version I currently use on all bands. Unfortunately, it does not have the real-time waterfall. You see the action only after a 2 minute TX period and not during the transmission as was the case for WSPRX.

The interface looks very similar to WSPR V2.2.

Please let me, and others, know if there are more recent releases by adding a comment and link.

By now, you probably realise that I just love WSPR. With quite simple equipment it is possible to be decoded across the planet consistently with real QRP power levels.   I am always on the look-out for new ideas, although until my health improves I am not in a position to build too much myself. See http://www.knology.net/~gmarcus/WSPR/wspr_v4.pdf for an example of a complete 30m WSPR transceiver.

This is NOT a new circuit  – it has been around for some years – and it still needs a PC for the WSPR software. Some TX-only WSPR beacons use microprocessors to generate the WSPR TX messages, thereby freeing up the PC and consuming little power overall. Some sync to GPS to avoid timing issues too.

Quite a few people who use WSPR use the tiny Microvert Antenna whose design seems to have originated in Germany. For example, this diminutive antenna is only about 30cms long on 28MHz. It uses the coax intentionally as a counterpoise with an RF choke the right distance down the coax. Performance is several S points down on a full sized antenna like a 1/2 wave dipole. With small antennas there is always a compromise! Versions have been made for most HF bands. The  antenna looks ideal for portable or balcony use, being small and easy to erect. Perhaps I should test my (currently poor) build skills by making one for 10m or 20m WSPR use?

I wonder who reading this post has used a Microvert Antenna and how they found it?

See http://download.antennex.com/preview/archive4/Apr601/microvert.pdf .

From Julian’s blog:

Julian died yesterday on 24 October in the presence of his wife Olga and two Hospice nurses at home at 19-45 peacefully and painlessly. He will be always loved and always remembered.

See  http://onefootingrave.blogspot.co.uk/ .

We all knew this was likely but it saddens me greatly to report this here.

RIP Julian – you brightened our lives and we will all miss you. Olga, our sympathies to you in your great loss. Julian inspired a great many people. He will be remembered for a long time.

I have no details of memorials (flowers, donations, etc.) or funeral arrangements.

I have been told that this 1W QRP TX from Australia, mentioned on the blog a few days ago, may no longer be available to order. I suggest you email the address on the Genesis website to see if it can be ordered. Certainly some of the SDR transceiver kits are only available in limited numbers. I am sorry if I got some hopes up only to be dashed.

See http://www.genesisradio.com.au/Q5/ . The website gives detailed schematics so you could always “roll your own”.

http://genesisradio.com.au/Q5/q5_1.jpg

A trawl of the internet earlier found this kit, a 1W QRP transmitter for any band from 3.5MHz to 14MHz. It is available for S19.95 (US Dollars) + S9 (US Dollars) shipped anywhere worldwide. That seems pretty good value. Also on the website are SDR transceivers.

I last showed this particular kit on my blog 5 years ago.

See http://www.genesisradio.com.au/Q5/ for more details including how to order the various kits. Details on the page include parts lists, schematics and building details.

The are some pretty good SDR transceivers on this site.