Last year on 10 April 2014, I picked up WWV on 25 MHz after hearing that the station had revived this frequency on 7 April for the first time since 1977 (here). So, I decided to send off a reception report to the station in Fort Collins, Colorado. In reply they sent me their usual QSL folder with the frequency of 25 MHz filled in. The verie signer was John B. Milton.
This was supposed to be done officially on an “experimental basis.” There are reports that they still may be on the air on 25 MHz as late as October 2015. There has been no signal there the times I have tried, but it could be because of poor propagation.
If you happen to hear them on 25 MHz and decide to send a reception report, I am sure they would be happy to hear from you.
Amateur Radio Relay League, WWV’s 25 MHz Signal Back on the Air, http://www.arrl.org/news/wwv-s-25-mhz-signal-back-on-the-air, accessed 23 November 2015.