What that is for is synchonous AM detection and is really a stereo AM chip put to a better? use ... well better in that Stereo AM kinda fell flat ... It works though and many people prefer the Sony SW receivers because of it
Quadrature detectors are used in a lot of ICs for FM broadcast receivers too and I've seen a couple of designs using them, the one that was (and maybe still is) in the ARRL Handbook comes first to mind using a NE604 FM IC but I've never found a good source John --- In [email protected], KY1K <[EMAIL PROTECTED]> wrote: > Hi all, > > I know this is OT for the group, but possibly of interest. > > I was wondering if anyone here has used the Sony ICF-SW7600 receiver. It is > selling on ebay for less that $100 and features 150 Khz to 30 Mhz, USB and > LSB reception and claims to use a quadrature detector. > > It has a PLL vfo though, probably to minimize power consumption, DSS chips > use alot of power. > > I was unaware of any consumer class receiver that used quadrature > detection, and happened to run across it accidently in a google search. > > I downloaded the Service Manual, it looks interesting, but not much info is > given on the quadrature detector aspect of the receiver. > > It appears to have the entire quadrature detector in a single chip, which > appears to be an ASIC. The chip has a Sony part number, and you can order > it. But, no other information is given on the chip. > > The chip might be of interest to the group, hopefully this message is not > too far off-topic. > > Art Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/soft_radio/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
