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FM Frequency of the Week: 93.1

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Carmichael, CA

KFBK Sacramento with a News/Talk Format

Vallejo, CA

Weak KFBK
Yep, I've gotten them by E-skip (918 miles or so) on May 21st, 2021!
Otherwise, in Cheyenne, 93.1 is splatter from 92.9.
 
East Tennessee: Local WNOX, with a 6kW signal that makes it to Sevierville and not much further. When they've been caught off the air, WSAA (owned by EMF since September 2021, takes over.

Retro/other: Dayton, Ohio area: Tropo may bring WIBC former WNAP/WKLR, sandwiched between WGTZ on 92.9 and WAKW on 93.3. Lafayette IN (when I was living there) was mostly Indianapolis but sometimes WKLR
 
South Mississippi:

lower HD sideband of WQUE New Orleans blocks signals most of the time. Q93 KQID Alexandria, LA (CHR) is the most common, and there has also been WGDQ Sumrall, MS (urban gospel), 93.1 KISS-FM KSII El Paso, TX, and Hot Country 93.1 KKYA Sturgis, SD.
 
Central Washington:
93.1 K226AK Ephrata //KFAE NWPB Classical
 
Kenosha, WI- WXRT Chicago. Pretty good signal, though a lot of the Chicago FMs that used to be perfectly listenable here are getting hacked up by HD sidebands and translators.

Have heard WDRQ Detroit and WNAP (current WIBC) Indianapolis.
 
The preclusive effect of Class C and Class B stations on 92.9 and 93.1, and maybe to a lesser degree, 93.3, with substantially less stations as I recall because of 93.5 228A being next to it, kept large areas without cochannel stations. Class C allotments were protected as if they all operated with 100 kW at 600 meters HAAT. In the early 1980s, Class C1 was introduced at 299 meters maximum HAAT without ERP reduction, and substantially less distance between stations. More recently, Class C0 was introduced because stations sat on unbuildable 451+ meter HAAT CPs for years. In Michigan, WDRQ, WZAK, WXRT, and WIMK were the main ones I heard and probably a bunch of Sporadic E stations I can't remember off hand.
 
Here in Wood Dale, IL:

WXRT, my favorite Chicago station all these years sending a solid signal from the John Hancock Center. They also have an AUX transmitter at 4949W. Belmont, which for many years used to also be their studio location.

WXRT is the only station I heard on 93.1 as I never caught them off the air. Same goes for 93.9, 94.7, 101.9, 104.3 and 107.5.
 
Nothing around Columbus, Ohio with local 93.3 WODC and its digital hash next door.
To my knowledge, there are only three stations on 93.1 in Ohio ... WZAK in Cleveland, WWSR in Lima and WJEH in Racine. WZAK is by far the most powerful at 27,500 watts. The other two are 3,000 and 4,100 watts and none of their signals come anywhere near Columbus.
 
Nothing around Columbus, Ohio with local 93.3 WODC and its digital hash next door.
To my knowledge, there are only three stations on 93.1 in Ohio ... WZAK in Cleveland, WWSR in Lima and WJEH in Racine. WZAK is by far the most powerful at 27,500 watts. The other two are 3,000 and 4,100 watts and none of their signals come anywhere near Columbus.
So you never heard anything via Tropo or E-Skip on 93.1?
 
I don't DX FM a ton Mario, but no, I've never heard anything on 93.1 in Columbus. 93.3 is so strong from only about eight miles to my west that its digital hash overrides anything on the channel.
Something could have made it in here on 93.1 back when 93.3 was in Chillicothe, but I never was on the channel to hear it if so.
 
I seem to remember that you could hear WXRT quite a bit better in Michigan during tropospheric events when it was 50 kW/500 feet HAAT Nondirectional on W. Belmont Ave. than when it moved to the John Hancock Center. It's also Directional now under Section 73.213. I'd have to check the distances, but it appears that it was short spaced to WNDV 92.9 (105 miles required under Section 73.207), and was either fully spaced at the Belmont site, or in the 80-105 mile short spaced zone for 50 kW nondirectional under older Section 73.213 rules. I guess they didn't think it was much of a problem over the Lake. However, many influential Chicago Business and Political figures have second homes in the Michiana/Berrien County area. The newer 73.213 rules are problematic when stations lose their tower sites, requiring DAs that may look good on paper, but if you look at the measured DA pattern, put deeper nulls than expected off the back of the pattern, and less ERP in several directions in the major lobe.

Just checked. WXRT is 75.64 miles from WNDV, which put it in the 20 kW/500 feet HAAT Short Spacing Zone, ~65-80 miles, under the old Section 73.213. Have to check the Belmont site on FCC Query, and the old Section 73.213 Zones on David's Archives for more exact calculations, but it looks like this is correct.
 
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93.1 is a weird one, as it holds two.

KKXX Bakersfield, CA, and KCBS Los Angeles, CA

[From Palmdale, CA]

Mainly I've noticed most days both are intermingled faintly, but some nights KKXX's signal refracts just a bit better and I'm able to get an RDS decode easily.
 
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Looks like WQFM/WLDB 93.3 was in the 80-105 mile old 73.213 short spacing Zone to WXRT 93.1, so no restrictions, 50 kW/150 feet HAAT equivalent allowed in that direction. There were no problems under the old 73.213 Zones for second and third adjacent stations, such as WNWC 92.7, etc. Originally, before the short spacing zones, it was based on contour overlap and protection to the 1 mV/m (60 dBu F(50,50)) contour, not the present day 0.5 mV/m (54 dBu F(50,50)) contour for Class B.
 
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Looks like WQFM/WLDB 93.3 was in the 80-105 mile old 73.213 short spacing Zone to WXRT 93.1, so no restrictions, 50 kW/150 feet HAAT equivalent allowed in that direction. There were no problems under the old 73.213 Zones for second and third adjacent stations, such as WNWC 92.7, etc.
In my local area, I was never aware of any problems with WQFM and WXRT co-existing. In the town where I grew up, twelve miles east of where I am now, both signals were present and listenable. WXRT being the stronger of the two

My WQFM story...

I interviewed there in the mid 70s and was offered a job. The money was comparable to what I could've made at McDonald's. Seriously! The person I interviewed with was later very apologetic about it. But, that said, WQFM was, IMHO, an excellent station. Actually taking a similar approach to WXRT's, albeit with a slightly more "mainstream" playlist. I'm not sure if by design or coincidence. Roy Disney's Shamrock Broadcasting was WQFM's owner in those days.
 
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