> -----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.
