On Tuesday, April 8, 2014 12:57:49 PM UTC-4, Michael Black wrote:
On Mon, 7 Apr 2014, extra class wrote:



WWVH, was never on 25MHz



In 1974(NBS SP 236) was on 2.5; 5; 10; 15 & 20MHz



Thanks. It's been so long since 1977, I couldn't remember.



Michael





"Michael Black" wrote in message

news:alpine.LNX.2.02.1404071916220.10312@darkstar. example.org...

On Mon, 7 Apr 2014, Keith wrote:



WWV?s 25 MHz Signal Back on the Air

TAGS: air, daily basis, dean lewis, Fort Collins, listeners, meter

propagation, MHz signal, NIST, old times, Propagation Beacons, standards,

technology, youtube

04/07/2014



WWV silenced its 25 MHz signal in 1977, but it?s back on the air ?for old

times? sake? ? officially on an ?experimental basis.? Resurrecting the

long-dormant standard time outlet operated by the National Institutes of

Standards and Technology (NIST) was Matt Deutch, N0RGT, the Lead

Electrical Engineer at WWV. It all came about after Dean Lewis, W9WGV,

lamented the loss of the 25 MHz signal in an e-mail to Deutch, who

surprised him by subsequently putting the signal back on the air on April

4 for about 3-1/2 hours.



A listener in Scotland posted his reception of the WWV 25 MHz signal on

YouTube.



WWV is running another 25 MHz test today (April 7), which began at about

1530 UTC. ?Matt promises the signal to be available for 24 hours,? said

Lewis. ?Members and listeners might be interested in hearing this historic

event.?



Lewis said he?d told Deutch that since 10 meter propagation has been so

good at this point in Cycle 24, and he uses the various WWV frequencies as

propagation beacons on a daily basis.



?He responded that ?for old times? sake,? they?d put the [25 MHz] signal

back on the air for a while. I assumed, of course, that he was kidding,

and so I didn?t check. Matt wasn?t kidding!?



NIST said the 25 MHz broadcast consists of the normal WWV signal heard on

all other WWV frequencies, at the same level of accuracy. The transmitter

in Fort Collins, Colorado, puts out 2500 W into a ?broadband monopole.?

WWV has invited listeners? comments and signal reports.



I thought the 25MHz signal was stopped for budget reasons. So now they can

just turn it on by whim? There has to be more to this story.



And what about WWVH, or did it never do 25MHz?



There was a story last week about how WWV has improved its accuracy, but I

wasn't paying attention or it didn't really explain what was changed. But

this almost seems connected.



Michael







According to Wiki it was . W-a-a-ay back in the 50's.