10 MHz locked LNBs do not use a separate connector. Everything goes down/up the single main coax. The typical L-band down-converted frequency and the 10 MHz are easily separated, as is the DC. These are definitely not inexpensive. Regards - Mike
Mike B. Feher, EOZ Inc. 89 Arnold Blvd. Howell, NJ, 07731 732-886-5960 office 908-901-9193 cell -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of jimlux Sent: Sunday, November 14, 2010 11:49 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] ADEV David I. Emery wrote: > 3. External reference LNBs with 10 MHz (pretty universal) going > up the cable that also carries power and brings the L band signal down. > I'm not entirely sure how many of these designs simply bandpass filter > and then limit the 10 MHz and use that directly as a PLL reference and > how many phase lock a VCXO to the 10 MHz coming in. Otherwise similar > (and often derived from designs for) the internal reference PLL types > in 2 above. And, I'll bet those are fairly pricey.. (after all, it needs another connector, and that's a price sensitive application..) _______________________________________________ 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.
