On Sun, 31 Mar 2013 20:31:58 -0700 gary <li...@lazygranch.com> wrote:
> On 3/31/2013 5:52 AM, Attila Kinali wrote: > > > > Probably. But as steep filters for optics are kind of hard to come by, > > i think a super heterodyne design isn't realy going to work. > I've bought optical filters from Andover. They are pretty cheap, at > least compared to the rest of the industry. > > http://www.andovercorp.com/Web_store/index.php Yes, but the usual optical filters are not steep enough for this application. They are specified to a few nm, while we are talking here about GHz. At those wavelengths this is IIRC a factor 100'000. But thanks for the page anyways.. they might come handy as an ambient light filter for the photodiodes. Attila Kinali -- The people on 4chan are like brilliant psychologists who also happen to be insane and gross. -- unknown _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
