Re: [time-nuts] Active LORAN antenna

2011-08-29 Thread George Dubovsky
Ulrich, I have the SRS active antenna schematic FS700-14, Revision B, and it is identical to Stan's schematic except that my R3 is 1k and his is 100k. Don't know which is the newer schematic. 73, geo - n4ua On Fri, Aug 26, 2011 at 9:02 AM, Stan, W1LE wrote: > Hello UL, > > My SRS active anten

[time-nuts] Using a lock-in amplifier

2011-08-29 Thread Don Lewis
This might be off topic, and if so, pls disregard. (I am new to your group..just listening lately, a little rusty on some of your talents.) I have an older EG&G Model 5202 Quadrature lock-in amplifier around for years waiting for a project. (.2 - 50Mhz) It seems its' phase sensitivity could

Re: [time-nuts] Using a lock-in amplifier

2011-08-29 Thread J. Forster
They are good instruments. You can certainly use them to compare the phase of two sources. Because it's a quadrature lock-in, you can also use it to sit on a peak with a small dither (Pound Locking). Best, -John > This might be off topic, and if so, pls disregard. (I am new

Re: [time-nuts] Question for any HP105 owners

2011-08-29 Thread Tom Van Baak
Hi Mark, What reference oscillator and measurement system did you use? Is that with or without a sqrt(2) removed? Is your HP105 the older style with the 00105 brick oscillator or a newer one? The modern HP105 is essentially a well engineered wrapper around a 10811 oscillator so the performance y