Re: Elektor SDR vs Softrock
Dom Baines M1KTA
David,toggle quoted messageShow quoted text
Thanks for the notes.
There have been LF softrock users on 136kHz and 500kHz for a while and Jim Moritz M0BMU in RSGB LF Today published examples of how to make the simple V6.2 Softrock of use at LF and VLF. You can find the schematic on several blogs e.g. http://g3zjo-radio.blog.co.uk/2010/03/21/softrock-lite-ii-for-500khz-and-136khz-8215824/ or my own http://m1kta-qrp.blogspot.com/2008/10/500khz.html
My RX on 500kHz is a modified Softrock using a 4Mhz crystal LO and divide by 8 and the band width even with a 16 bit 48KHz sound card is much wider than the allocation from 501-504khz.