Re: WWVB surrogate
Another approach I'd like to try is an IOS app called Clock Wave. It picks up the time from the net, then emits a tone from the iPhone/iPad/iPod that is picked up by your radio controlled watch/clock. Probably works thru harmonics from the mobile devices speaker. It's been on the app store for two years and amazingly enough appears to work really well. The cost is a not unreasonable $1.99. Unfortunately I don't have any Apple devices - it needs IOS 8 or later - so I can't use it.
Various YouTube demos and discussions can be found with a search.
Regrettably it doesn't seem as though there's anything like this for Android or Windows.
Mount Pleasant, WI