Hi OMs,

Yes, the Galileo spectrum null for both E6 orthogonal signals goes out on 1263.4 MHz. For that reason the P3E L-band receiver local oscillator is synthesized and receiver is possible to retune from 1268.800 to 1263.300 MHz (center of the analog passband) by command from the Earth. On 1268.52 MHz we expected one of the power spectral density peaks of Galileo sigs. I already offered participation on Eagle project in the field of L-band receiver.

Mirek OK2AQK P3E L-band Rx designer

...

Hi John,

Consider this.......

4. I understand that the P3E folks have already worked out a solution by locating their L-Band operations in what will be a Galileo spectrum null. If that is the case, then the P3E folks are really using some good "science" to develop their satellite L-Band operations. Good for them!! Hey - I'm not in the thick of it - but it seems there are some serious gaps in communication between AMSAT-DL and AMSAT-NA even though we read about glimpses of real technical exchange. I hope we're not falling for the NIH (Not-Invented-Here) syndrome.

Regards...Bill - N6GHz

-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org]On Behalf Of John B. Stephensen Sent: Sunday, September 10, 2006 7:47 PM To: jules@g0nzo.co.uk; amsat-bb@amsat.org Subject: [amsat-bb] Re: 10mtr and Galileo

What bothered people is the fact that we need high power L-band uplinks and the statement in the report that "there is the potential for most amateur 23 cm transmissions to interfere with Galileo unless the Galileo receivers are designed and built to withstand it".

73,

John KD6OZH