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Re: [IRCA] V7AB 1098 OC with 60 Hz hum!
- Subject: Re: [IRCA] V7AB 1098 OC with 60 Hz hum!
- From: Tim Tromp <kilokat7@xxxxxxxxx>
- Date: Tue, 3 Oct 2017 20:34:19 -0400
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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 <neilkaz58@xxxxxxxxx> 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
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