This is the first call for speakers for the 21th Amsat-UK Colloquium which will be held at Surrey University, Guildford, Surrey, U.K., from Friday 28 July to Sunday 30th July 2006.

Amsat-UK invite speakers, about amateur radio space and associated activities, for this event. They are also invited to submit papers for the "Proceedings" document which will be published at the same time but printed papers are not mandatory. We normally prefer authors to present talks themselves rather than having someone else give them in the authors' absence. We also welcome "unpresented" papers for the Proceedings document.

Offers of talks should be submitted as soon as possible; the final date for full documents to be received is mid-June 2006 in order that the "Proceedings" document be available to participants.

Submissions should be sent *ONLY* to G4DPZ, via the following routes:

Internet e-mail: g4dpz @ amsat . org

SnailMail: QTHR from http://www.qrz.com

AMSAT-UK also invite anyone with requests for Program Topics to submit them as soon as possible to G4DPZ. Invitations for any papers on specific subjects will be included in the future call. Likewise if anyone knows of a good speaker, please send contact and other information to G4DPZ.

Additionally, Amsat-UK will be running sessions specifically for beginners to amateur satellite operating on the Friday and Saturday afternoons; additional volunteers are needed to speak at these sessions.