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 <pianoplayer88...@yahoo.com>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? > _______________________________________________ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
