Clock Wave

I downloaded this very skeptical!! Already expecting it not to work! Because it makes sense right how can a phone that can only transmit sound set a clock that receives radio signals! I don’t know how this works but it truly does! However you have to hold your clocks receiver close to the speaker on your phone with the volume all the way up! Then be patient it after you start a manual receive your signal reception will show very strong then just minutes later you will have a set clock! It’s really pretty amazing!!! The key to this working is keeping the clock your setting close to you phone while your transmitting!! Otherwise it won’t work!! You can’t believe those that say it doesn’t work because it really does!!

I was doubtful of how clicking sounds from a speaker would simulate radio signals but bought the app anyway. I tried the app with a Lacrosse atomic clock that can’t receive a WWVB signal unless it was by a west facing window. It didn’t work so I was all set to give a 1 star scam rating and review. I decided to try it again but this time I aligned the speaker with the back of the clock and turned up the iPad volume. When I looked five minutes later the signal received icon was showing on the clock and it was synchronized with the correct time, having been 12 seconds slow before. Now I have to find how why and how this works

Just bought a watch from eBay and was having trouble receiving the time signal with it. Loved the watch but not sure if there was a problem with the receiver. No way to test but to go outside at night away from the house, point north, etc., etc. Even a watch I already owned and knew worked with the signal was having trouble. Heard about JJY app on a google review of a similar watch and then hit the App Store for it, and took a guess to search for WWVB. Found this app! Less than ten minutes later, watch synchronized! Fabulous, and best $2 that I ever spent.

I have seen a lot of folks saying this cannot work. The app generates a sound signal but a radio controlled watch needs a radio signal to calibrate. It is not the sound that is doing it but the electric square wave pulses in the wiring to the speaker that generate the electromagnetic pulses. There is a triple harmonic at 20kHz that generates the 60 kHz radio signal that your watch can recognize. If you plug a simple AM antenna into the speaker port of the phone it will work even better. (One wire to ground and one to left or right) Then all of the electrical energy goes to EM instead of wasting it to drive the speaker ;)

Got a new Casio watch that receives the atomic time signal and could not pick up the radio signal inside my house after several tries. Got this app and tried it, and bingo it worked first time I tried it, took about three minutes for the watch to get a positive response and it adjusted the time which was a couple minutes off. Be sure and have your speaker volume up all the way and place watch/clock next to speaker.....I had watch actually touching my iPad right where the speaker is.....worked perfectly!