LF: Coherent LF Receiver

To:	[email protected], [email protected]
Subject:	LF: Coherent LF Receiver
From:	Andy Talbot <[email protected]>
Date:	Wed, 18 Nov 2015 09:13:20 +0000
Dkim-signature:	v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=QfOGgraA6Epm8wSNjwB9ykidd9kIoSrwonWkblZWkVY=; b=wU1zQgD/ta5kPI6Xjb7URxHuvUZ+AQCxmwjh0yZiJnn7M0z3CyiYQPU04PSVmTai3v VjnAkc1iePBtFQJ/4MyRerhz2uMpBMsXVUteZ2xeT2MjM2jB2V9yUarPXQHkCvEVIsQf 78zagdDQvmYsaSZKuV2vwjVi9/yBSnW7kattsGqQK9tu+n87hCHFNfr73Hl9pZgVZhAs Znii6lBSpqmXw1KRFT8saZadbM15zn3Z1Kgqp3UmQaYTXZdGA6icKsS+KbW7600F95aY BKt/zmIoP33OJ7mE+D3QtcOpuwN+YWtztIi48dEwbz73eclco5Cf99P3ichLk9t53dGX 1N0g==
Reply-to:	[email protected]
Sender:	[email protected]

Details of my Coherent LF receiver for digitising a signal centred on 1kHz then sending I/Q baseband samples over a serial link to a PC can be found at http://www.g4jnt.com/Coherent_LF_Receiver.pdf

The PC software linked in there - written in VB6 - can generate a .WAV file of decimated samples in a format that EbNaut can read. I've saved that as a full installation package for those without VB runtime libraries present

The PIC based digitiser is useable with a conventional receiver delivering a 1kHz tone. The opamp band pass filter provides adequate anti-aliasing for the majority of purposes, but if you use a narrow CW type filter in the receiver to reject audio below 750Hz and above 1250Hz, the opamps could be dispensed with and the PIC used on its own

Andy G4JNT

<Prev in Thread]	Current Thread	[Next in Thread>
LF: Coherent LF Receiver, Andy Talbot <=

Previous by Date:	Re: LF: 137.780 dash's, Andy Talbot
Next by Date:	Re: LF: 137.780 dash's, jcraig
Previous by Thread:	LF: 137.780 dash's, Roman RW3ADB
Next by Thread:	LF: USB TO SERIAL, mal hamilton
Indexes:	[Date] [Thread] [Top] [All Lists]