Probably nothing wrong with the radio.
WWV Signal is very weak, and unless you have a good antenna, picking them up during the day is highly unreliable.
First and most important to know is that the 5, 10, and 15 frequencies are only transmitting with 10KW.
I have a Kaito KA1102, which was popular with HAM radio operators as a little backup or travel receiver, and with the built in stick antenna, only with great luck would I be able to pick up a station during the day using the stick.
I live in a semi-urban area 3.5 mi from down town Austin Tx, in one of the classic weird neighborhoods so no sources.
The radio came with a 3.5 meter wire antenna, and even with this antenna hung from a mast, while I can usually pick up a WWV station during the day, about the only thing I can hear is the seconds tone, and I can hear the pause that signals the time stamp, but I can almost never clearly understand (or even hear) the time stamp.
For reference, the WWV 15Mhz signal would require a 5 meter wire to have a 1/4th wave antenna, and this would not be directional and really would not have any gain.
Now at night, things improve but it is typically after midnight before I can pick up WWV on the stick antenna. If I want to hear it earlier than that, I have to use the external antenna.
10KW Is not a lot of power and during the day, these signals simply don't propagate that well. Usually with a wire, you can pick up one of them some of the time due to propagation differences, but you have to try them all and even then, eh. Sometimes you get lucky.
Now if you are running a big directional antenna on a big tower or a long wire, yeah, you would do much better, but for most small units running the stick or a short wire are simply not going to get these stations reliably during the day and as I said, It is super rare for me to be able to actually hear the time stamp during the day.
You can call (as someone mentioned) but I am not aware of any other way to get the WWV time stamp but that does not mean that another way does not exist.
Fingers crossed that you can find a way to comply with the requirements.
(Since many astrometric measurement is done at night, this is far less of a problem for most measurements, but yeah, for daytime, you probably need a good quarter wave antenna to have a chance.)
See if you have a HAM operator in your area that will let you set up near his shack.
Edited by Eddgie, 19 October 2019 - 05:08 PM.