ARRLWeb: ARRL Frequency Measuring Test Returns November 17 UTC

ARRLWeb: ARRL Frequency Measuring Test Returns November 17 UTC

"NEWINGTON, CT, Nov 9, 2005--

Returning to the airwaves November 17 at 0245 UTC (Wednesday, November 16 in US time zones), the 2005 ARRL Frequency Measuring Test (FMT) will repeat the challenge of last year's successful event.

This year's FMT again calls on participants to measure the frequency of an audio tone modulating the carrier.

'Measuring the tone frequency, as opposed to that of the carrier, reinforces the understanding of the relationship between carrier frequency and the actual components of a transmitted signal,' Engineer and ARRL Contributing Editor Ward Silver, N0AX, says in 'Tune In the 2005 Frequency Measuring Test,' in November QST. 'With the carrier largely suppressed for SSB signals, only the sideband components remain.

A single modulating tone results in a single transmitted component.' But, Silver notes, the frequency of the absent carrier is what the operator sees on the radio's display. "

73 fer nw,
Bob N5IET

10X# 37210, FP#-1141, SMIRK#-5177
http://www.n5iet.com/
Code may be taking a back seat for now,
but the pioneering spirit that put the code
there in the first place is out front of it all.