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9330khz 0020-0028utc 3/29/10
Repeating the song "whip it" over and over. AM mode. Maybe WBCQ doing
some test? |
#2
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9330khz 0020-0028utc 3/29/10
On Sun, 28 Mar 2010 17:30:13 -0700 (PDT), SC Dxing
wrote: Repeating the song "whip it" over and over. AM mode. Maybe WBCQ doing some test? I am looking at a spectrum display and one of the sidebands is missing. AM mode sounds distorted a bit. In synchronus AM mode sounds OK. Maybe they are trying to save money. Bro Stair recently cut his programming. Jim |
#3
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9330khz 0020-0028utc 3/29/10
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#4
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9330khz 0020-0028utc 3/29/10
On Mar 28, 6:42*pm, wrote:
On Sun, 28 Mar 2010 20:45:10 -0400, wrote: On Sun, 28 Mar 2010 17:30:13 -0700 (PDT), SC Dxing wrote: Repeating the song "whip it" over and over. AM mode. Maybe WBCQ doing some test? I am looking at a spectrum display and one of the sidebands is missing. AM mode sounds distorted a bit. In synchronus AM mode sounds OK. Maybe they are trying to save money. Bro Stair recently cut his programming. Jim Looks like they might be sending amplitude compandered single sideband on 9330kHz. Glenn Hauser mentions this in one of his columns regarding 9330 using CUSB. You can test it out. Put your radio in LSB and you hear very little. USB and you hear the normal signal. But you still have a pilot carrier so it will sound OK in AM mode. Jim Isn't this what CHU and HD2IOA (Guyaqil, Ecuador) do with their time signals? CHU on USB, HD2IOA on LSB - ? Each has a carrier, but only one audible sideband. Bruce |
#5
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9330khz 0020-0028utc 3/29/10
On Mon, 29 Mar 2010 10:20:56 -0700 (PDT), bpnjensen
wrote: On Mar 28, 6:42*pm, wrote: On Sun, 28 Mar 2010 20:45:10 -0400, wrote: On Sun, 28 Mar 2010 17:30:13 -0700 (PDT), SC Dxing wrote: Repeating the song "whip it" over and over. AM mode. Maybe WBCQ doing some test? I am looking at a spectrum display and one of the sidebands is missing. AM mode sounds distorted a bit. In synchronus AM mode sounds OK. Maybe they are trying to save money. Bro Stair recently cut his programming. Jim Looks like they might be sending amplitude compandered single sideband on 9330kHz. Glenn Hauser mentions this in one of his columns regarding 9330 using CUSB. You can test it out. Put your radio in LSB and you hear very little. USB and you hear the normal signal. But you still have a pilot carrier so it will sound OK in AM mode. Jim Isn't this what CHU and HD2IOA (Guyaqil, Ecuador) do with their time signals? CHU on USB, HD2IOA on LSB - ? Each has a carrier, but only one audible sideband. Bruce I believe so. I sent them an e-mail and in the process found out this was a test transmission and that they had also been on 15420. I did not get a chance to check that frequency unfortunately, but the propagation on 31m held up right until the abrupt sign off at 10PM local time. Jim |
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