You could also get really hardcore and build the VNA described in DUBUS 4/2009 by HB9TXV. Very nice piece of work, usable to 30 GHz.
-- john, KE5FX > -----Original Message----- > From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com]on > Behalf Of Lux, Jim (337C) > Sent: Thursday, January 21, 2010 3:44 PM > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] Test Equipment > > > > -----Original Message----- > > From: time-nuts-boun...@febo.com > [mailto:time-nuts-boun...@febo.com] On Behalf Of Gerhard Hoffmann > > Sent: Thursday, January 21, 2010 2:50 PM > > To: Discussion of precise time and frequency measurement > > Subject: Re: [time-nuts] Test Equipment > > > > Lux, Jim (337C) wrote: > > > What frequency ranges? > > > If you are interested in <60MHz, then something like the > TenTec TAPR VNA > > > ($600) connects to a PC or a mac. Works as a signal > generator and as a 2 > > > port VNA. > > > > > > > > Or this one: > > http://groups.yahoo.com/group/VNWA/ > > (DG8SAQ) > > > > Excellent to 500 MHz, quite usable to 1300 MHz. > > Does 6 or 12 term error correction, most of this VNA is software. > > I'm just using one to tune a 100 MHz oscillator with opened loop. :-) > > > > The only drawback is that one cannot measure compression > > because the absolute levels vary over f. > > > > But then it can embed / de-embed, virtual match, display the Q > > and equivalent circuit of a crystal from S11 measurement, > > L, C, time gating and and and. > > > > > Outstanding.. that one is very competitive in price (using a > ballpark $2/GBP conversion) to the TAPR one. > > I'm glad that more of these are becoming available (as assembled > units, not as kits..) > > _______________________________________________ > 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. _______________________________________________ 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.