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ARRL General Bulletin ARLB010 (2008)

ARLB010 Spring 2008 W1AW Frequency Measuring Test Set

QST de W1AW  
ARRL Bulletin 10  ARLB010
From ARRL Headquarters  
Newington CT  May 19, 2008
To all radio amateurs 

ARLB010 Spring 2008 W1AW Frequency Measuring Test Set

W1AW will conduct a Spring Frequency Measuring Text.  This FMT will
begin on Wednesday, May 21 at 9:45 PM (EDT) (that's the same as 0145
UTC on May 22), replacing W1AW's normally scheduled phone bulletin.
W1AW Station Manager Joe Carcia, NJ1Q, recommends that those
planning to participate should listen to W1AW transmissions prior to
the event to determine which band -- or bands -- will be best for
measurement purposes.

For this FMT, participants are asked to measure the frequency of an
audio tone, given an exact frequency for the carrier signal. The
tone will be between 1000-2500 Hz. The carrier frequencies will be
3990 kHz (LSB), 7290 kHz (LSB), 14290 kHz (USB) and 18160 kHz (USB).

The techniques for measuring a modulating tone are described in the
November 2004 QST in an article on the Frequency Measuring Test by
H. Ward Silver, N0AX.  The article can also be found at,  The FMT Web page
also has several interesting articles about measuring on-the-air
signal frequencies.

The FMT will start with a general QST call from W1AW at exactly 0145
UTC, transmitted simultaneously on the frequencies listed above. The
test will consist of three 60-second key down transmissions for each
band, followed by a station identification. The test will last for
approximately 15 minutes and will end with station identification.
W1AW will identify before, during and after the transmissions. There
are no plans at this time for a West Coast station.

As in the November 2007 FMT, your report should be submitted via the
FMT Report form web site at,
Along with your call sign and e-mail address, enter your most
accurate measurement on each band. There will be a window to list
your equipment, describe the method you used to make the
measurements and enter any Soapbox comments.  Participants have 14
days to input their data.  Participants may input their data more
than once, although the final entry will be the one used for the

W1AW will post the transmitted frequencies on the W1AW FMT Web site
shortly following the test. This will allow participants to quickly
determine the accuracy of their equipment and methods. A complete
package of results will be available via the FMT Web site after the
14-day reporting period is concluded.

The results from the November 2007 FMT are available on the 2007 FMT
Results Web site at, .


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