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Author Topic: Broadcast FM on Marine VHF  (Read 1765 times)
KJ6MSG
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Posts: 59




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« on: September 12, 2012, 09:31:48 AM »

This is an odd one. I routinely hear a local broadcast FM radio station (KWYE 101.1 based in Fresno) on marine VHF channel 23 (157.150). This is rather peculiar to me. Could it be IMD? I've never heard of a broadcast station transmitting on Marie VHF before...
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73,
KJ6MSG
@kj6msg
G3RZP
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Posts: 4742




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« Reply #1 on: September 12, 2012, 12:25:40 PM »

On how many VHF marine radios? Probably some sort of spurious receiver response, but unless it happens on several different model radios, it could be a tx problem.
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KJ6MSG
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Posts: 59




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« Reply #2 on: September 12, 2012, 04:05:34 PM »

I pick it up on my FT-7900R when I tune to the freq, as well as in my aircraft, which can receive Marine VHF. So, two different receivers.
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KJ6MSG
@kj6msg
KJ6MSG
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Posts: 59




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« Reply #3 on: September 12, 2012, 04:19:16 PM »

Update... The freq is actually 161.750 MHz. I hadn't tuned it in my FT-7900R lately and forgot it was actually the secondary freq. Also, a Markne VHF handheld we have at work also receives te broadcast.
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KJ6MSG
@kj6msg
KJ6MSG
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« Reply #4 on: September 12, 2012, 04:22:14 PM »

Sorry for the spelling. iPhone...
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KJ6MSG
@kj6msg
G3RZP
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« Reply #5 on: September 13, 2012, 02:59:09 AM »

Tell the FCC. If it is a tx spur, they will want to know....
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K8AXW
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« Reply #6 on: September 13, 2012, 06:26:52 AM »

Call the FCC?  That'll cost the station!  Call KWYE.  The will want to know for sure!
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KJ6MSG
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Posts: 59




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« Reply #7 on: September 13, 2012, 07:57:15 AM »

Another ham thinks it could be a re-broadcast on something like a public access TV station. Channel 20 analog has its audio carrier at 161.750 MHz. I'm looking into it and seeing if that's the case.
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KJ6MSG
@kj6msg
W8IXY
Member

Posts: 9




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« Reply #8 on: September 19, 2012, 01:41:50 PM »

There are several RPU, Remote Pickup frequencies designated by the FCC for radio station use in that part of the spectrum. 

VHF RPU's

152.87  -  153.35 Mhz      60 kHz intervals

161.640    161.670    161.700    161.730    161.760    166.250    170.150        30 kHz intervals


73
Ted W8IXY
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