"Robert Costa, KB6QXM" <[email protected]> wrote: > I know of a nice company that sells custom made LPFs that will eliminate > the images. The preferred method would be a pre-selector that goes down to > those frequencies, but there is nothing that goes down to VLF frequencies. > I am in conversation with someone who maybe releasing a commercial product > soon. If there is a commercial vlf/lf pre-selector, I would like to know.
I recently got a kit for next to nothing to up convert VLF to 10 MHz (or 4MHz, xtals were provided for both), This included filtering (and an optoion for extra filtering. It works very well, getting round the harmonic problems inherent in the flex (1500 only???) down conversion at LF. I can't remember the source but it was discussed (about 6 months ago roughly) on one of the flex lists. Google may help. What I'd like is to add an upconverter to allow me tor transmit on 137/500 kHz. -- Brian Duffell G3VGZ G8AOE Yarm North East England _______________________________________________ Flexedge mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used for posting topics related to SDR software development and experimentalist who are using beta versions of the software.
