Re: LF: Multi-function beacon

To:	[email protected]
Subject:	Re: LF: Multi-function beacon
From:	Andy Talbot <[email protected]>
Date:	Fri, 6 Mar 2009 20:13:32 +0000
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Not strictly -

Look at it in th efreqeuncy domain. A 500us pulse has its first zero at 2000/pi = 637Hz, so most of the energy is within 1300Hz bandwidth, and a substantial part will pass though the Rx filter. It will be extended in time and flattenned, but the detection algorithm finds the peak, in effect applying an inverse transform of the SSB filter.

Andy G4JNT
www.g4jnt.com

Nb the pulse width , 500uS .. that's a bit sharp for a ssb filter , only 1.5 cycles at 3 Khz ... ?

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LF: Multi-function beacon, Andy Talbot Re: LF: Multi-function beacon, Graham Re: LF: Multi-function beacon, Andy Talbot Re: LF: Multi-function beacon, Graham Re: LF: Multi-function beacon, Andy Talbot Re: LF: Multi-function beacon, Graham Re: LF: Multi-function beacon, Andy Talbot <= Re: LF: Multi-function beacon, Graham Re: LF: Multi-function beacon, Andy Talbot Re: LF: Multi-function beacon, Graham LF: 503.7 Multi-function beacon ... Its working !, Graham LF: AW: 503.7 Multi-function beacon ... Its working !, Beckmann, Gerhard Re: LF: AW: 503.7 Multi-function beacon ... Its working !, Graham AW: LF: AW: 503.7 Multi-function beacon ... Its working !, Beckmann, Gerhard Re: LF: AW: 503.7 Multi-function beacon ... Its working !, mal hamilton LF: Ok so who missed this quick qsy ?, Graham LF: Re: Ok so who missed this quick qsy ?, Mark

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