[IRCA] [UPDATE] 1650 "SAC" Morse Code oddity

[Les Rayburn <les@xxxxxxxxxxxxxxxx>]

I figured the easiest way to eliminate Southern Avionics Co. from the list of âsuspectsâ would be to simply call them. Spoke with Derick Moore in their Technical Development department. He confirmed that SAC has been testing an NDB on 325 KHz for the past few days, but that beacon is transmitting MSK dataânot CW. Itâs running at an output power of 150 watts. 

The third harmonic of that transmitter would be 1625 KHz, but the modulation is all wrong. 

Mr. Moore was very interested in our mystery, but couldnât offer any solid suggestions on who or where the transmissions might be coming from. 

As Scooby-Doo used to say, ârut rowâ

I think weâve got a mystery here, gang. 

73,

Les Rayburn, N1LF



Les Rayburn, director
High Noon Media Services
130 1st Avenue West
Alabaster, AL 35007-8536
205-621-7500
205-621-7505 FAX
205-253-4867 CELL
highnoonfilm.com

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> On Oct 28, 2016, at 11:07 AM, Glenn Hauser <wghauser@xxxxxxxxx> wrote:
> 
> http://www.classaxe.com/dx/ndb/rna/signal_list
> 
> KHz A-Z 	ID 	LSB 	USB 	Sec 	Fmt 	'Name' and Location 	S/P 	ITU 	GSQ 	PWR 	Notes 	Heard In 	Logs 	Last Heard
> 260 	SAC 	387 	400 	5.9 	  	Unknown 	  	XUN 	  	  	  	ENG IL MN OH TX 	5 	2013-04-17
> 300 	SAC 	400 	401 	5.68 	  	Unknown 	  	XUN 	  	  	  	CO IL TX 	4 	2011-03-19
> 314.5 	SAC 	400 	400 	5.4 	  	UnKnown 	  	XUN 	  	  	  	CA CO IL MO TX 	6 	2014-09-25
> 
> 320 	SAC 	398 	398 	6.03 	  	Beaumont 	TX 	USA 	EM20wb 	  	Southern Avionics Co. (SAC) testing NDB using thier standard freq and ID prior to delivery to user. 	AZ CA CO IL MA MN MO NS OH OR TN TX 	25 	2015-03-11
> 
> 325 	SAC 	400 	400 	5.4 	  	Beaumont 	TX 	USA 	EM20wb 	  	Southern Avionics Co. (SAC) testing NDB 	CA MO 	3 	2015-03-11
> 
> To be an harmonic (x5), fundamental would have to be 330 kHz instead, possible if this is just for testing; or 275 x 6. So this is overcoming the 1650 broadcasters? Does anyone get a DF on it? --- Glenn Hauser
> 
> --------------------------------------------
> On Fri, 10/28/16, longwave@xxxxxxxxxxx <longwave@xxxxxxxxxxx> wrote:
> 
> Subject: Re: [NRC-AM] 1650 "SAC" Morse Code oddity
> To: "Bob Galerstein" <bobgale@xxxxxxxxxxxxx>
> Cc: am@xxxxxxxxxxx, IRCA@xxxxxxxxxxxxxxxx
> Date: Friday, October 28, 2016, 1:29 PM
> 
> It
> is probably some sort of a harmonic of a beacon that has
> been reported on 320 and 325 khz.  The offset of this
> beacon has been reported at either 398 or 400 hz above and
> below center frequency.  It supposedly belongs to Southern
> Avionics and the location is Beaumont Texas.
> 
> Keith
> McGinnis
> Hingham MA
> 
> From: "Bob
> Galerstein" <bobgale@xxxxxxxxxxxxx>
> To: am@xxxxxxxxxxx
> Sent: Friday, October 28, 2016 9:18:04
> AM
> Subject: Re: [NRC-AM] 1650
> "SAC" Morse Code oddity
> 
> When I see the letters "SAC," I
> think of "Strategic Air Command." Doubt 
> there's any connection but just wanted to
> bring that up.
> 
> Bob Galerstein  WB2VGD
> Monroe, NY
> 
> 
> On 10/28/2016 12:56 AM,
> Les Rayburn wrote:
>> Easy copy here in
> Central Alabama, near Birmingham. Slow speed CW, about 5
> WPM.
>> 
>> Any ideas
> about who this station might be?
>> 
>> 
>> 73,
>> 
>> Les Rayburn, N1LF
>> 121 Mayfair Park
>> 
> Maylene, AL
>> EM63nf
>> 
>> Member WTFDA, IRCA,
> NRC. Former CPC Chairman for NRC & IRCA.
>> 
>> Elad FDM-S2 SDR,
> AirSpy SDR, Quantum Phaser, Wellbrook ALA1530 Loop,
> Wellbrook Flag, Clifton Labs Active Whip.
>> 
>> 
>>> On Oct 27, 2016, at 11:18 PM, James
> Renfrew <jim.renfrew@xxxxxxxxx> wrote:
>>> 
>>> Not hearing
> it in western NY.  Jim Renfrew, Clarendon NY
>>> 
>>> On Fri, Oct
> 28, 2016 at 12:03 AM, Tim Tromp <kilokat7@xxxxxxxxx>
> wrote:
>>> 
>>>> 
> Thanks Mark, at least I'm not going crazy then :-)
>>>> 
>>>> 
> 73,
>>>> -Tim
>>>> 
>>>> 
>>>> On Fri, Oct 28, 2016 at 12:01 AM,
> Mark Pettifor <mark@xxxxxxxxxxxxxx>
>>>> wrote:
>>>> 
>>>>> 
> I'm hearing it also, on the south DKAZ, using the ELAD
> FDM-S2, as you
>>>>> describe.
>>>>> 
>>>>> Mark in Goshen, IN
>>>>> 
>>>>> 
>>>>> On 2016-10-27 11:56 pm, Tim
> Tromp wrote:
>>>>> 
>>>>>> 0341 UTC and I'm
> hearing "SAC" repeated in morse code on 1650 kHz.
>  The
>>>>>> code is weak and
> fades in and out but clearly visible on peaks on the
>>>>>> Perseus SDR's
> waterfall and offset by 400 hz on both sides of 1650.
>>>>>> Unlikely this is some kind
> of image on my end.  I'm hearing this on my
>>>>>> South antenna while
> conditions are still heavily favoring the South.
>>>>>> Anyone else hearing
> "SAC" or know anything about it?  Could it be
>>>> related
>>>>>> to Southern Avionics Co.
> in Beaumont, TX.?
>>>>>> 
>>>>>> 73,
>>>>>> Tim Tromp
>>>>>> West Michigan
>>>>>> 
> 
> _______________________________________________
> The 37th edition of the AM Radio Log is now shipping!
> Info: http://www.nrcdxas.org
> 

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