I understand Bert. But you wanted to test it. I actually don't have a real reason grab one of these jewels. Though understanding when the piles gone, its gone. Thats the way it works on this stuff. But I have 6 of the old cel site Lucent RBs all $20 and a Good HP 5065 and then last spring a lpro 101 for $20. Granted the Lucents are fairly old in years with OK lamp voltage still. Just concerned about becoming a RB addict and having to join a multi-step with-drawl program. God knows I may still buy two. Shipping included. :-) Regards Paul
On Fri, Dec 9, 2011 at 10:19 AM, <[email protected]> wrote: > Paul > I was exactly where you are. The last thing I needed was an other Rb. But > an Rb at $ 40 I did bite the bullet and running the tests I do not regret > it. > Bert Kehren > > > In a message dated 12/9/2011 10:11:06 A.M. Eastern Standard Time, > [email protected] writes: > > Marco I understand also. But good enough for this conversation. > What I find interesting is that you can not even find a good xtal these > days for $40. > Yet here is a complete package that delivers quite a bang for the buck. > I have wavered back and forth on buying one since I already have numbers > of > these types of references. So far I have pulled back. Another one? > Regards > > On Fri, Dec 9, 2011 at 9:54 AM, Marco IK1ODO -2 <[email protected]> > wrote: > > > At 14:21 09-12-11, you wrote: > > > >> Marco > >> Think you are correct for most things we do. > >> However in communications for mixing and such a sine wave is desirable > and > >> a very clean output to minimize things like IMD and other products as > we > >> get the 10 MC to its final frequency. Since you are a ham you may > >> appreciate that. > >> Regards > >> Paul > >> WB8TSL > >> > > > > Hello Paul, > > > > I understand, but don't agree 100% :-) - I mean, doing radio either you > > use the 10 MHz for syncing oscillators in you chain (I do that for EME, > all > > is derived from a FRK-HLN), or you use the 10 MHz directly to a mixer. > The > > mixer usually is inherently non linear; if you look at the current in > the > > diodes of a ring mixer, it is almost squared. More it is squared, more > > abrupt is the diode switching, better the mixer dynamic range. And many > > mixers are sensitive to harmonics (see Tayloe mixer) of the input signal > or > > use harmonic mixing schemes (see any S/A), only possible if the mixer > > current is highly non-sinusoidal. > > So, I agree with Javier about the search for existence of low lever > > spurious signals, but don't understand the need to have a (very) low > > harmonic content. Oh, well, to have too many harmonics is a bad thing - > one > > time I had radiation problems from a coax feeding a 10 MHz squared > signal, > > with components over 100 MHz - but this is an extreme case. > > > > 73 - Marco IK1ODO / AI4YF > > > > > > ______________________________**_________________ > > time-nuts mailing list -- [email protected] > > To unsubscribe, go to https://www.febo.com/cgi-bin/** > > > mailman/listinfo/time-nuts< > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts> > > and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
