Re: KKOH NV DX Test Heard in Central Indiana
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Les Rayburn
Dave,
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Congratulations on the reception! We provided KKOH with the DX Test material which included the Morse Code ID’s that you heard. These were recorded at 700 Hz and 10 words-per-minute. The test also included various sweep tones, and telephone off-hook sound effects. A few years ago while serving as CPC Chairman, I enlisted the services of a friend who is a licensed audiologist to test lots of different test material. This included Morse Code, sweep tones, marching band music, etc. The tests determined that sweep tones were the most effective at cutting through noise, followed by Morse Code. Morse has the advantage of triggering the “pattern recognition” part of our brains. This is why we can sometimes make out a familiar song on a weak station, but can’t quite copy the identification. Still waiting to review my tapes—not heard “live” but did manage to log a nice ID from Radio Coro, which is a new station and country for me. Paul is in discussions with two other stations about DX Tests, and if he’s successful, we’ll be providing the DX material for them as well. 73, Les Rayburn, N1LF 121 Mayfair Park Maylene, AL 35114 EM63nf Member WTFDA, IRCA, NRC. Former CPC Chairman for NRC & IRCA. Perseus SDR, Elad FDM-S2 SDR, AirSpy + Discovery, SDRPlay RSP-2 Pro, Sony XDR-F1HD [XDR Guy Modified], Dennon TU-1500RD, Sangean HDT-1X, Ray Dees RDS Decoders, Korner 9.2 Antenna, FM-6 Antenna, Kitz Technologies KT-501 Pre-amps, Quantum Phaser, Wellbrook ALA1530 Loop, Wellbrook Flag, Clifton Labs Active Whip. “Nothing but blues and Elvis, and somebody else’s favorite song…”
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