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 stanw...@verizon.net wrote: Hello UL,

[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 EGG 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