[R-390] Rush Limbaugh sure sounds good on '67 EAC ;-)

Mon, 14 Jul 2003 20:50:15 -0400

Roy: I assume since you didn't mention it that WWVL is long gone.  That was
the 20-kHz station that they used to have around a number of years ago.

Side note: Are any of the VLF stations (NAA, etc.) still transmitting down
there?  Do any of you (besides Phil) listen down there?  Point of curiosity
only...

Thanks,
Dave WB4FUR

-----Original Message-----
From: [email protected] [mailto:[email protected]]On
Behalf Of Roy Morgan
Sent: Monday, July 14, 2003 4:07 PM
To: [email protected]
Subject: Re: [R-390] Rush Limbaugh sure sounds good on '67 EAC ;-)

At 01:53 PM 7/14/03 -0500, Mike wrote:

>Certainly close enough for a cigar *all* the time in my book.
>
>Get any good stories?

Well, lets see:

The staff is battling a number of bad weeds, as part of their good neighbor
policy toward nearby farmers.

The Russian Olive trees on the site grow way too fast and need to be
thinned out.

The site was chosen in the early 60's partly because of the ground
conductivity in that area.

Some of the main line transmitters are now Contenental ones.  They replaced
the larger TMC transmitters, which are now used for standby service.

The hulks of the *old* 60 kc transmitter are headed for the scrap
heap.  The new 60 KC transmitters are Continential, each with two sections
running a total of four 4CX5000 tubes.   Two of the installed three 60 KHz
transmitters run continuously.    "... each transmitter only has to produce
a forward power of about 38 kW for WWVB to produce its effective radiated
power of 50 kW."   Two diamond shaped flat top antennas, some 850 meters
apart and each about 400 feet tall are fed through matching networks to
form a sort of dipole.  An automatic tuning system keeps them in proper
phase by nudging a variometer under motor control.

For more info on NIST time services see:
www.time.gov
and: http://physics.nist.gov/GenInt/Time/boulder.html
To see pictures of WWVB, WWB and WWVH, see:
http://tf.nist.gov/

The country's most accurate clock called the "fountain clock", is shown at:
http://tf.nist.gov/cesium/fountain.htm
It is run from time to time to calibrate a group of Hydrogen maser clocks
that constitute the working master clock of NIST at Boulder.  (A yet more
accurate clock is under development.)

A group of four cesium clocks is used at WWV in Fort Collins to set the
time and frequency signals that are broadcast. They are compared routinely
with the master clock group at Boulder.

No public tours of the station are now held.  (The same is true of the
Denver and  Philadelphia mints, where tours can be arranged in advance
through your congress person's office.)

Roy

- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
7130 Panorama Drive, Derwood MD 20855
Home: 301-330-8828 Work: Voice: 301-975-3254,  Fax: 301-948-6213
[email protected] --

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