----- Original Message -----

From: Mark

To: [email protected]

Sent: Thursday, January 03, 2008 9:43 PM

Subject: LF: GM4ISM 500KHz Grabber

Gents,

Thanks to Wolfgang DL4YHF, the grabber at my QTH is now running a new beta version of Spectrum lab, that should stop the problem of multiple users getting partial images.

After an initial rush of activity, the number of users has calmed down, rather as expected.

Feel free to jump on board and try to break it again!

The system is connected to my main antenna but this is at minimum height and not correctly matched. Still it works pretty well and many signals were visible last night.

I have also got the magnetic antenna working, (placed temporarily on the shed roof) and it will be re-mounted when the weather permits, it seems slightly better than the reduced height main antenna.

 

I dont have the fantastically low noise floor that John GM4SLV offers, but I hope to leave the grabber running for the duration of the UK experiment or longer, if it is considerd useful. It is far enough away from other grabbers to perhaps be of some use for the experiment. It is also a testing ground for possible similar systems at SHF giving 'inverse' beacons for propagation indication.

 

any comments or problems encounterd, please let me know!

Regards

Mark GM4ISM

www.dc2light.co.uk

follow the MF / LF link, at the bottom of the page is the grabber link.

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