I sent the following to John Lowe of the NIST regarding the WWVB change proposals. His comments follow.
Dear Sir, I just read your whitepaper on the new modulation scheme proposed for WWVB. It seems that you and the other authors of this paper have addressed the concerns of people that use WWVB solely for use with wall clocks and the like. Have you done a study to see how the alteration of the modulation scheme will affect those users that use WWVB for frequency standardization with WWVB receivers like those manufactured by Tracor, Symetricom and the like? I am sure that you must be aware of the widespread use of these venerable receivers. Do you have solutions or a work around so that those products will remain useable? It seems that a huge percentage of time users get their time from their Cell or iPhone or even their internet connected computers. Few people I know actually have WWVB clocks.Those that I know have been happy with the way they work today. Many people do not even wear watches these days. We have already given up LoranC. I recently pulled my very expensive receiver out of the rack as it is now a useless paper weight. Why change something that has been working so well for frequency users for many decades? I know that everyone wants to push GPS but in my opinion it is prudent to have a back up plan. After all WWVL has been gone for many years. If WWVB makes this change there will not be a usable VLF service for frequency use. Is this change up for comment or is it a done deal? Sincerely, Sam H. Reaves III Response: Thank you for your comments. We are working on making an interface that will keep these devices operational. While it is true that there are WWVB frequency reference devices out there, no manufacturer has made or supported these devices in years. They are all considered obsolete by their own manufacturers. It is estimated that over 12 million radio receive clocks and watches have been sold in the US. The new scheme will allow new devices to be constructed that can receive the frequency also. I will add your name to my list to be contacted when we have a work-around. Thank you >> So I gather from this they are working on something, but no details were given. Sam _______________________________________________ time-nuts mailing list -- firstname.lastname@example.org To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.