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AM Frequency of the week: 1290

in Laramie, WY... KOWB KOWB KOWB...lol

When KOWB was off after a pipe burst flooding the transmitter room earlier this year, I had a few decent logs on 1280 1290 and 1300
 
radioman148 said:
It is my understanding that WIRL does protect KOIL, but I stand to be corrected.
Click to expand...

I just checked David's Website, and the archive of Broadcasting Magazine's yearbook. I picked 1966 as a random year and looked up 1290 in the "stations by frequency" section. It shows both KOIL and WIRL as III-A stations. Exactly what I had always thought. As always, I stand to be corrected, but it had also long been my understanding that WIRL and KOIL were obligated to protect each other. But that said, I wouldn't be surprised if KOIL's pattern was originally designed to protect WHIO. That scenario would explain WIRL's two deep nulls.
 
It's kind of confusing. Some Class III-As were not protected according to the definition, which was protected to the 2.5 mV/m. The study for the Savannah station at the link showed WIRL's NIF as around 4.5 mV/m, even in excess of the NIF prescribed for III-Bs, 4.0 mV/m. WOW 590 was/is by its present callsign 5 kW nondirectional. At the distance at Kalamazoo, the 10% skywave would be close to 500 uV/m, which would limit WKZO to 10 mV/m NIF, 4 times the prescribed 2.5 mV/m for a Class III-A. The folks at Broadcasting gave up after a number of years and just showed almost all of them all as "III", because the designation was so inconsistent according to the prescribed rules.
 
I finally logged WIRL here this morning right they switched over to their daytime pattern. The signal was quite listenable for about 20 minutes before they were buried in the mud of (2) other signals that I have yet to ID. One is likely KOIL...

Bob
 
DXBob said:
I finally logged WIRL here this morning right they switched over to their daytime pattern. The signal was quite listenable for about 20 minutes before they were buried in the mud of (2) other signals that I have yet to ID. One is likely KOIL...

Bob
Click to expand...

Nice catch
 
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