[amsat-bb] Re: 10mtr and Galileo

[Miroslav Kasal]

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 at amsat.org [mailto:amsat-bb-bounces at amsat.org]On
>> Behalf Of John B. Stephensen
>> Sent: Sunday, September 10, 2006 7:47 PM
>> To: jules at g0nzo.co.uk; amsat-bb at 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
>>