[Milsurplus] BC-221 with noisy tuning

[J. Forster]

Not so much. Now it's pretty much GPS and disciplined Rb oscillators.

WWV has added BPSK modulation, which renders many Phase Tracking
receivers, like the HP 117A useless w/o modifications.

-John

================




> de WB2CPN
> Laboratories and designers of radio frequency equipment couldn't do
> without a Standard Frequency source.  Now-a-days they use the VLF
> signal, and have one-meter (?) loops on their roof.  I understand
> that JJY and all the other "standards" in other countries coordinate
> their clocks.  e.g. :UTC (in French) = Universal Coordinated Time in
> English.
> I still don't know how a thing as small as my wrist watch can pick up
> WWV, but it does.
> End of Trivia.
> Clete
> ++++++++++++++++++++++++++++++++++++++++
>
> On 6/11/2013 12:37 PM, John Hutchins wrote:
>> WWV in opeation since 1922;
>> http://en.wikipedia.org/wiki/WWV_%28radio_station%29
>> At the end of 1922, WWV's purpose shifted to broadcasting standard
>> frequency signals....
>> So It may have been used in WWII.... as a reference?
>> Hutch
>>
>> On 6/11/2013 4:30 AM, C.Whitaker wrote:
>>> de WB2CPN
>>> WWV was there when I went into USAF communications
>>> in early 1946.   I don't know when JJY came along
>>> Trivia, but when I aligned the BC-221 I had it out of the box,
>>> a towel wrapped snugly around it, and a long handled
>>> screwdriver.   I don't know if it was a common thing, but the
>>> radio position in the C-47 we played with had a space for it.
>>> Navy had a rack-sized generator in 1948 I used a few times.
>>> Clete
>>> ++++++++++++++++++++++++++++++++++++++++
>>>
>>> On 6/10/2013 4:41 PM, J. Forster wrote:
>>>> I wonder whether there were on-air frequency standards, like WWV,
>>>> during
>>>> WWII?  Anybody know off-hand?
>>>>
>>>> -John
>>>>
>>>> ================
>>>>
>>>
>>>
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