It's regular Heliax that's been temperature-conditioned by repeated temp cycling to minimize dielectric size change vs temperature. This minimizes phase shift over length. The cycling affects the foam used as the dielectric, which apparently eventually stops expanding and contracting as much as non-conditioned cables. Bill Ezell ---------- They said 'Windows or better' so I used Linux.
Neon John wrote: On Mon, 24 Nov 2008 17:33:25 -0800, "Tom Van Baak" [1]<[EMAIL PROTECTED]> wrot e: Yes. I know of several commecial systems. If you only need to do a short jump, then using fairly basic E/O-O/E equipment should work well enought. It all depends if you want/can to roll your own or need to buy a finished product (aka "buy this, and you will be fine!"). Magnus, what's the typical noise floor, tempco or drift of cheap (i.e., non JPL-level) fiber distribution systems like this? Is it less than regular coax, or phase stabilized heliax? At 100 m lengths? OK, tom, you got me with another one. WTF is phase stabilized heliax? Is that a hunk of ordinary heliax that has been characterized or is it made special in some way? re: original problem check out B&B Electronics [2]http://www.bandbelectronics.com/ sorry, I'm off-line right now and can't browse but they specialize in really inexpensive implementations of stuff like this. John -- John De Armond See my website for my current email address [3]http://www.neon-john.com [4]http://www.johndearmond.com <-- best little blog on the net! Tellico Plains, Occupied TN Save the whales, collect the whole set! _______________________________________________ time-nuts mailing list -- [EMAIL PROTECTED] To unsubscribe, go to [6]https://www.febo.com/cgi-bin/mailman/listinfo/time-nut s and follow the instructions there. References 1. mailto:[EMAIL PROTECTED] 2. http://www.bandbelectronics.com/ 3. http://www.neon-john.com/ 4. http://www.johndearmond.com/ 5. mailto:time-nuts@febo.com 6. https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts _______________________________________________ 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.