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This recording contains the greatest number of simultaneous changes in WWV history. In order of appearance, listen for the following:
- Standard WWV announcement at 2350. Engineers audibly adjust the voice levels.
- Several minutes of unedited WWV broadcast, including a complete example of the NASA 36-bit time code.
- After the buzzsaw code, engineers momentarily fade up the new broadcast format (with musical tones and IRIG-H "bass note" subcarrier) for about five seconds, presumably to test the levels and functionality. (Careful listeners will also note the faint Morse code station ID of Argentinian time-signal station LOL.)
- Immediately after the top of the hour, WWV’s old format is faded out and the new station identification plays for the first time. The voice carrier is extremely distorted, but station engineers immediately adjust the gain. The first “on-the-minute” time announcement follows.
Track 25 of 'AT THE TONE: A LITTLE HISTORY OF NIST RADIO STATIONS WWV & WWVH.' © 2009 Myke Dodge Weiskopf / Obscure-Disk.
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