WNJC 1360 will run the test again tonight (late night Saturday/early Sunday Morning) starting at midnight EST.
Hopefully the station will get issues with power switching corrected and be able to run the test with full day power of 5,000 watts tonight.
David—two points regarding test material:
1.) Years ago, we did an extensive series of tests with a licensed audiologist and a ‘focus group’ of his patients who were all 50+. The tests involved mixing a recording of a regional channel at night with various test material.
The test material was mixed (in both channels of audio) at different levels.
Material tested included Morse Code, sweep tones, off-hook telephone sounds, marching band music, Christmas music, long tones at different frequencies, voice ID’s in both male and female voice, station jingles, etc.
The tests conclusively demonstrated that the following material cut through the noise best:
Sweep Tones (by a ‘country-mile’)
Morse Code at 900hz-1kHz
Long tones at 900hz-1kHz
off-hook telephone sounder
Station jingles (with female voices) were way down on the list. So adding more of them to the playlist would actually hurt chances of distant receptions.
Changes in propagation over the course of a few minutes can often make big changes in how a signal is received. But science says the mix we’re using is optimum.
2.) The Morse Code ID’s are computer generated, with the Farnsworth rate adjusted.
We’re all grateful for Duke and the owners of WNJC for these long-duration tests. Considering the test last night was at 1200 watts, it got out to amazing distances.
73,
Les Rayburn, N1LF
121 Mayfair Park
Maylene, AL 35114
EM63nf
NRC & IRCA Courtesy Program Committee Chairman
Member WTFDA, MWC
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…”
> On Sep 12, 2020, at 11:13 AM, D.J.J. Ring, Jr. <n1ea@arrl.net> wrote:
>
> I removed Paul from the Reply List, he will be happier.
>
> George, if you were hearing those tones, you were hearing WNJC. I
> think there should have been more "Station Identification Jingles"
> broadcast, they were recognizable for exactly what they were and the
> station call letters were quite readable.
>
> But even with Morse code identification could be a problem, I was a
> professional radiotelegrapher for many years and I had to have the
> Morse repeated four times before I could be sure I copied the whole
> thing - but what else could it be - but because of the error in
> spacing
> "D E" as two words, I wanted to be sure I could say "I heard WNJC" in
> Morse when there was another error in that! There wasn't just the
> incorrect spacing of "DE."
>
> Best wishes,
> David Ring
> N1EA
>
> On Sat, Sep 12, 2020 at 10:05 AM George Santulli <gsantulli@hotmail.com> wrote:
>>
>> Heard same sounds here in northern Virginia too, fun, but WNJC unneeded here. G
>>
>>
>>
>> Sent from my Samsung Galaxy smartphone.
>>
>>
>> -------- Original message --------
>> From: "D.J.J. Ring, Jr." <n1ea@arrl.net>
>> Date: 9/12/20 9:20 AM (GMT-05:00)
>> To: odxa@groups.io
>> Cc: Dave Marthouse <dmarthouse@gmail.com>, Les Rayburn <les@highnoonfilm.com>, Paul Walker <paul@myhits106.com>, IRCA List <IRCA@groups.io>, ABDX List <abdx@abdx.org>, badx@groups.io, Phil Bytheway <DXM.EiC@gmail.com>, CapeDX <capedx@yahoogroups.com>, Hard-Core-DX <Hard-core-dx@hard-core-dx.com>, NRC-AM <nrc-am@googlegroups.com>
>> Subject: Re: [HCDX] [odxa] WNJC 1360 DX Test Sept 13 & 14th
>>
>> WNJC 1360 DX Test
>>
>> WNJC with spooky tones, on 1360 kHz for special reception test now maybe
>> music, but now Morse VVV D E WNJC WNJC WNJC.
>>
>> There should be no word space between D and E.
>>
>> Tones perfectly readable, with co-channel interference.
>>
>> I like the off-hook telephone sound! Very imaginative.
>>
>> Music gets lost in the noise, but I can tell spooky music right before
>> sending beeps are broadcast.
>>
>> Best wishes,
>>
>> David Ring
>> N1EA
>> MARSHFIELD, MA USA
>>
>>
>>
_
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