Re: [IRCA] TP attempts 2011-10-15 from El Cajon / La Mesa, CA

[Walter Salmaniw <canswl@xxxxxxxxx>]

Stephen, it's easy when you have a SDR that you can see the classic IBOC
bands.  Otherwise, I think they'll sound very similar.  The IBOC will sound
more like white noise, while the jammer is lower pitched and
grinding.........Walt

On Sat, Oct 15, 2011 at 10:51 PM, Stephen Airy
<pianoplayer88key@xxxxxxxxx>wrote:

> Hi all,
>
> This morning around 6:30-7:15 local time (PDT) I made a few attempts at
> bagging some TP signals.  (Local stations do their sunrise pattern switch at
> 6:45am this month.)  I was using my Tecsun PL-606 set to 1kHz BW, aided by
> the Select-A-Tenna, along with an Eico Model 710 vacuum-tube grid dip
> meter's oscillator as a rather unstable makeshift BFO / carrier / het
> detector.
>
> I uploaded a few short (approximately a minute or two) recordings of
> catches with possible audio at the following link:
> http://www.mediafire.com/?kb2v1v9s52dav
> There you'll find a couple clips of 747 (at 6:32 and 6:35) and one of 873
> (at 6:46, all times PDT am).
>
> Also, not recorded, but noted, were...
> 819 het but fading
> 963 possible weak het
> 1008 strong het, but too much domestic slop prevented me from recording it
> 1053 het, but I didn't record it either as S/N never rose above 0 and KNX's
> IBOC was confusing me.
>
> Regarding that 1053...  I have 1070 KNX, who runs IBOC, only 111 miles from
> me across a partial saltwater path (and the land portion has mostly "15"
> conductivity with a little bit of "8" the last several miles to where I am),
> so they put a fairly strong signal here 24/7, typically 46/25 to 48/25
> daytime depending on where I am in the house (lay it on top of my piano and
> it's 52/25, hold it up to the electrical panel in the coat closet and it'll
> hit 60/25).  Anyone have suggestions on how I would tell the difference
> between that Korean jammer that some in Washington state have logged, vs.
> residual KNX IBOC?
>
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