Noted from West Michigan too, V7AB is now peaking here past their 1130 UTC sign off time. And as Neil discovered, a distinct 60 Hz audible hum can easily be heard on their open carrier during big signal peaks and clearly visible on the SDR. Here's a nice Perseus screenshot showing that hum (the +/- 60 Hz lines centered on 1098 kHz) during one such signal peak:
http://amdxer.com/spectrograms/1098_V7AB_1136_UTC_25SE17.JPG No audible DUs heard this morning here, just the usual carriers. One interesting catch was 740 KATK from Carlsbad, NM. at 1140 UTC which hung in there for about 10 minutes all alone until Baraboo, WI. blew it out of the water a few mins before 1200 UTC. KATK only logged two other times here. I still need these K calls on 740: KIDR-AZ, KVFC-CO & KCIK-HI (I can dream!) 73, Tim Tromp West Michigan Perseus SDR + southwest phased BOGs On Tue, Oct 3, 2017 at 3:53 PM, Neil Kazaross <[email protected]> wrote: > This carrier from the Marshall Islands was strong enough this morning at > sunrise (about 1150 UT) for me to hear some 60 Hz hum and also to see the > two carriers about 60 Hz to the sides of 1098. > > If you want audio from this one you need to try no later than 1130. > > 73 KAZ Barrington IL > _______________________________________________ > IRCA mailing list > [email protected] > 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: [email protected] > > _______________________________________________ IRCA mailing list [email protected] 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: [email protected]
