Ken, I see you have a AM radio station 1.4 miles from Moscow, it's frequency is
1400 Khz and 1 KW, I wonder if there could be something going on with that
station.? The 3rd harmonic of 1400 Khz is 4200 Khz close enough for a look.
The station could have some problems of some sort. Do you see anything at 2800
Khz?
Of course, it doesn't explain why others some distance away are hearing this
same signal.
Oh well, just a thought.
Hope you get to the bottom of this.
73
Dale, k9vuj
On 28, Apr 2014, at 16:55, Kenneth G. Gordon <kgordon2006@frontier.com> wrote:
> On 28 Apr 2014 at 13:23, Tom Thompson wrote:
>
>> It could be that the broadband noise is local and the STANAG signal at
>> 4286.3 kHz is strong enough to poke through the broadband noise and they
>> are not related at all.
>>
>> Tom W0IVJ
>
> Yes. I had wondered about that too. I had also thought that perhaps it
> was some sort of intermod problem within the FT-890 itself.
>
> I have been wrong about all such things before...
>
> The "white noise" is 20db over S-9 on 3576 KHz most of the time, S-9 on
> 40 and S-8 on 20. It is also a bit lower on 160: S-9 on 1990 KHz AM
> (2137Z).
>
> At this moment, it is S-7 on 14042 KHz. Tuning down to 3576 Khz, it is
> 10db over S-9 right now (2114Z)
>
> I am receiving reports of unusually very high "white noise" levels from
> many hams around here at about the same levels as I am experiencing. So
> it isn't just my station.
>
> Doing more tuning around, with the antenna coupler OUT of the circuit,
> connecting to my vertical as though it is simply an untuned chunk of
> "wire" 55 feet tall, I can no longer hear any STANAG signal on 4286 Khz.
>
> However, my "white noise" is still 10db over S-9 on 4286 Khz. now.
>
> Now I am completely baffled...
>
> I am hearing the STANAG signal coming on for short periods, then off
> again, then back on...as though they are testing it.
>
> Sigh....perhaps I should sell all my junque or give it away and go back
> to bb stacking or sand piling... :-(
>
> This is getting totally frustrating.
>
> So, at this point, I can,apparenly, rule out the STANAG tranmissions...at
> least those on 4286...
>
> Ken W7EKB
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