[R-390] WWV Shutdown

[Glenn Little WB4UIV]

I have maintained three digital TV transmitters and none were locked to GPS.
They have the capability, but, it was an option that was not bought.

The only way, that I know of. to measure the frequency of a digital TV 
station is to look at the pilot which is just above the low end of the 
channel.
You cannot use a counter, but, use a calibrated spectrum analyzer.

The pilot frequency is published ,and is accurately listed on the 
transmitter name plate.

73
Glenn
WB4UIV

On 8/15/2018 9:46 AM, dog wrote:
> I've tried calibrating with WWV, but I get about 2-3Hz doppler drift 
> here in the east, so I bought a Nortel GPSDO, plus it puts out 10MHz 
> that I can feed to my Moto Service monitor and also my TS-2000. I 
> bought a little circuit from OZ that does that for some rigs. Trouble 
> is the DSP is off by about 1.7Hz The new digital TV stations put out a 
> GPS locked carrier signal, but some are offset by a small amount.
>
> I used to work at Goddard back in the 70's, right next to the towers 
> for WWV. There had those big Amperex multi channel recorders from 
> satellites that one track was dedicated to the WWV signal. Somewhere 
> I've got a WWV QSL card for the time they switched to Ft.Collins. I 
> remember even back then some of the technicians thought the moon walk 
> was faked.
>
> Don't know what a new GPSDO sells for these days but I would think one 
> could be had for $100 or less? I've got a Rb standard, LPRO-101, if 
> anyone wants to buy it pretty reasonably.
>
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-- 
-----------------------------------------------------------------------
Glenn Little                ARRL Technical Specialist   QCWA  LM 28417
Amateur Callsign:  WB4UIV            wb4uiv at arrl.net    AMSAT LM 2178
QTH:  Goose Creek, SC USA (EM92xx)  USSVI LM   NRA LM   SBE ARRL TAPR
"It is not the class of license that the Amateur holds but the class
of the Amateur that holds the license"