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Re: LF: Opera 8 versus 32 SNR

from [Albert] [Permanent Link][Original]
To: [email protected]
Subject: Re: LF: Opera 8 versus 32 SNR
From: Albert <[email protected]>
Date: Fri, 20 Jan 2012 22:41:32 +0100
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Op 20-1-2012 21:58, Andy Talbot schreef:

That's more like what we'd expect.
So...   it looks as if there's something in Mike's suggestion about th
way the noise is measured is suspect.

and we shouldn't put too much faith into the S/N value shown.
ANdy


On 20 January 2012 20:43, Albert<[email protected]>  wrote:

Mike, Andy

Food for thought

TX driver via att 120 dB to SDR RX brick wall filter @ 2.5kHz.

resulting in:

20:30     136 PA0A Op32 +3 dB 0 km @ 000
19:54     136 PA0A Op8 +4 dB 0 km @ 000

Albert, PA0A



The same trick on 500 kHz

21:30    500 PA0A de PA1ANS Op16 0 km +6 dB in Lucaswolde
21:13    500 PA0A de PA1ANS Op4 0 km +7 dB in Lucaswolde

 Tomorrow same tests at lower SNR

Albert, PA0A

Attachment: Opera 4 16.docx
Description: MS-Word 2007 document

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