Hi Herbert, That is more or less what I did for RF Explorer, see http://www.rf-explorer.com . Current versions are limited to narrow ISM bands, but wider band models are coming in a few weeks, including a 2.4Ghz and 240-960Mhz. The circuit is published on the "hacker's corner" wiki. You may get some ideas out of it. Hope this helps, --=20 Ariel Rocholl http://www.rf-explorer.com On Tue, Jun 28, 2011 at 5:00 PM, Herbert Graf wrote: > So, in my huge amounts of free time I've been thinking that the one area > of electronics I don't really have much experience is radio. > > I've been experimenting and having some fun, but I've convinced myself > that something that might turn out to be a really fun and educational > adventure is building a spectrum analyzer. > > There's not of google links out there to half finished or ancient > projects. > > I'm not looking at creating laboratory grade equipment, just something > that'll help me see that the circuits I'm building are actually doing. > > So, any suggestions? > > I'm not to concerned about the interface or display, that's the kind of > stuff I've done before so I'd probably just take the easy way out and > use a PC initially. > > My main area of concern is the actual RF stuff. > > I'd like the analyzer to at least cover up to about 1GHz (the 2.4GHz > band would be nice (and very useful in the future) but I feel I might be > overreaching there). > > Alot of projects use the tuners in VCRs for the RF front end. Any > recommendations on something that might work well? > > Ideally if I could get a tuner to do most of the dirty work (something > like feed it a voltage to select which frequency to tune, and output an > RSSI signal to indicate signal strength) that would be a great way to > start. > > Any suggestions? Anybody do something similar? > > Thanks for your ideas! > > TTYL > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .