[Elecraft] OT: K3 timekeeping

[Mike Harris]

Extract from NIST Time and Frequency Services publication 432 (2002)

The WWV transmitters consist of two types: plate modulated class C 
transmitters operating at 10 kW each on 5, 10 and 15 MHz, and class A 
transmitters operating at 2.5 kW each on 2.5 and 20 MHz.

Regards,

Mike VP8NO

On 27/11/2014 16:22, Phil Kane wrote:
> On 11/26/2014 10:11 PM, Jim Brown wrote:
>> On Wed,11/26/2014 4:54 PM, Fred Jensen wrote:
>>> The second and third harmonics of the tones, maybe the fourth harmonic
>>> depending on conditions and strength of the signal at your QTH
>
> Another thing that should have been mentioned as appearing in the
> baseband are the "ticks".
>>
>> How far down were the harmonics? -40 is 1% distortion, -50 is 0.32%. 5%
>> is widely considered to be "communications quality."
>>
>> When I've listened to WWV (not often), I hear distortion. They're a
>> Standard for Frequency and Time, not high futility. :)
>
> How much of that is due to selective fading (twist) of the sidebands?
> It's HF, you know!  :)
>
> 73 de K2ASP - Phil Kane
> Elecraft K2/100   s/n 5402