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- Thread starter CADXER
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I heard KYET in WY and confirmed it was on 1 watt,t, sandwiches between Tulsa and SLC analog and HD.
I know the engineer well enough that im pretty sure hed tell me if they werent on proper night power.
There is no way that 1 watt will travel that far.
This is a broadcast station, not 20m SSB.
I've also heard 70 watts from 2300 miles away on a broadcast station, @frankberry
Both engineers would have honestly told me if it was runnign day power at night, you can beleive what i want, but i trust my ears and my broadcast friends
Your engineer friends may not know that someone has put the station on daytime power at night. 1 watt or 70 watts does not have enough energy to reach the ionosphere which it must reach for the signal to skip back to earth.
So tonight is the night thar KDWN AM 720 Las Vegas, Nevada goes dark, right? I remember somebody saying that right before they go dark, they will switch to day power for like 5 minutes before shutting everything down. Is that DX test at 11:55 P.M. Pacific time? I’m more interested to see if WGN comes in here in San Diego once KDWN is shut off.
Well in the case of the AM running 70 watts.. i specifically asked the engineer to check the remote control a few nights in a row and get back to me and he confirmed to me it was running licensed power.
I've heard LOTS up here in Alaska youd never think id hear.. including a few 1KW class c graveyarders at more then 2000 miles away.
its midnight local KDWN time for 10 minutes.
A number of years ago there was a reception report of 1580 in Connersville IN in Norway, claiming it to be on 4 watts power. Engineers swear they were on nighttime 4 watts power. I would question it, but when that North Pole SDR was up, it came up with some very interesting stuff.
"ESPN Radio 94.1" = KHIT Reno NV on 1450 right now at S4, mixed with someone airing conservative/religious talk, sounds like Dennis Prager. SS Ranchera buried likely KTIP Porterville. Another night of strong Au conditions begins.
There is hardly any interference underneath local KYNR-1490, likewise with KDYM-1230 at 30 miles. Even 1400 has mostly KRSC Othello at 60 miles and 1-2 way under!
Sundre AB SDR (on a beverage) is just about as dead as can be. Even graveyard channels are noise. Groundwave, like KOJM-610, all alone and no interference. The auroral bubble is destroying the MW band at 51N latitude. I believe the only skywave is KOA and KSL, both very weak, and maybe KFAX or KNZZ on 1100. This is in comparison to hearing KROP-1300 Brawley at 1300mi last night plus other southern CA stations.
There is hardly any interference underneath local KYNR-1490, likewise with KDYM-1230 at 30 miles. Even 1400 has mostly KRSC Othello at 60 miles and 1-2 way under!
Sundre AB SDR (on a beverage) is just about as dead as can be. Even graveyard channels are noise. Groundwave, like KOJM-610, all alone and no interference. The auroral bubble is destroying the MW band at 51N latitude. I believe the only skywave is KOA and KSL, both very weak, and maybe KFAX or KNZZ on 1100. This is in comparison to hearing KROP-1300 Brawley at 1300mi last night plus other southern CA stations.
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I probably mentioned that I bought an FCC discarded but fully working calibrated FIM-41 a couple years ago. One watt might be heard for some distance with ground wave if radiated from a licensed station's antenna and very little cochannel interference. I heard a station on Silent STA that had it's oscillator stage leaking to the antenna system. I had measured the signal at my location at about 5 mV/m with 1000 watts before it went silent. I got a 25 uV/m unmodulated carrier about 20 miles away, which corresponds to about 25 milliwatts radiated from the antenna. Figure it out if you doubt my calculations. There was another station about 200 miles away that put about a 5 uV/m signal during critical hours interfering with the unmodulated oscillator carrier. When I go a few miles from the silent station, it is definitely stronger. I plan to take the FIM-41 close to the transmitting antenna to further verify the FI and approximate inverse field. When I get about one mile from it, it stops the scan on my car radio.
So if there is little or no cochannel interference, no electrical interference, and a good antenna, you could probably hear 1 watt quite a bit further. That's not to say the station was operating with only one watt. Look at the 0.5 mV/m 50% skywave contour of a 5000 watt station on fccdata.org. With no other skywave or ground wave interference, 50 watts would put 50 microvolts per meter. 0.5 watts would be 5 uV/m, essentially unmeasurable with a barefoot FIM-41. So 50 watts may be believable, not 1 watt in my estimates.
When KSL 1160 was unduplicated, the year they had DST very early due to the energy crisis, WJJD 1160 was allowed 50 watts presunrise. I heard it and recorded it about 220 miles away in Genesee County, MI. KSL and WJJD faded in and out at about the same field intensity, which corresponded to the skywave curves in the 1960 NAB Engineering Handbook. My antenna was a 100 foot longwire.
So if there is little or no cochannel interference, no electrical interference, and a good antenna, you could probably hear 1 watt quite a bit further. That's not to say the station was operating with only one watt. Look at the 0.5 mV/m 50% skywave contour of a 5000 watt station on fccdata.org. With no other skywave or ground wave interference, 50 watts would put 50 microvolts per meter. 0.5 watts would be 5 uV/m, essentially unmeasurable with a barefoot FIM-41. So 50 watts may be believable, not 1 watt in my estimates.
When KSL 1160 was unduplicated, the year they had DST very early due to the energy crisis, WJJD 1160 was allowed 50 watts presunrise. I heard it and recorded it about 220 miles away in Genesee County, MI. KSL and WJJD faded in and out at about the same field intensity, which corresponded to the skywave curves in the 1960 NAB Engineering Handbook. My antenna was a 100 foot longwire.
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Early daylight savings circa 1974.
www.wgbh.org
The FCC allowed 50 watts one hour before sunrise for some stations otherwise ineligible for presunrise authority.
www.fcc.gov
The U.S. tried permanent Daylight Saving Time in the 1970s — then quickly rejected it
The Senate gave itself a pat on the back earlier this week when senators voted without objection to make Daylight Saving Time permanent. "The good news is…
www.wgbh.org
The FCC allowed 50 watts one hour before sunrise for some stations otherwise ineligible for presunrise authority.
Amendment of Part 73 of the Commission's Rules to provide a one-hour advancement in the sign-on times of daytime AM broadcast stations to recoup the morning hour lost by the enactment of year-round Daylight Saving Time [Docket 19902]
Presunrise authorizations modified for some AM broadcast stations due to changes in Daylight Saving Time. Docket 19902, FCC 74-135
NEW log just now!
1260 - KTRC NM, Santa Fe; very weak-weak with PSA at 1833 PT 2/28/23 for the New Mexico Athletics Association, mentioning high school sports, then fade-out. KMZT CA is in there as well. NEW #821, 1KW at 1,066 miles. This would never be possible during normal cx with CFRN, KPOW, etc. in the way. This is auroral cx at its finest! I believe this is now the 4th new log since the CME hit.
660 is a dogfight of KGSV Oildale CA (Punjabi) and KTNN Window Rock AZ (Country), neither of which is very strong. 530-600khz is totally dead besides KPQ-560 and the local TIS(es) on 530.
XEMO-860 Tijuana BCN under SF. KRDC-1110 Pasadena in with Lakers basketball, very little pointed towards WA state. This was a tough catch even under Radio Disney/KDIS.
EDIT - another new one.
1440 - KFOO CA, Riverside; with 'BIN' ID at 1848 PT 2/28, mixed with KVON Napa, back into news update. NEW #822, 1KW at 883 miles. Nice to have this in the log as I have been looking for them for years!
1260 - KTRC NM, Santa Fe; very weak-weak with PSA at 1833 PT 2/28/23 for the New Mexico Athletics Association, mentioning high school sports, then fade-out. KMZT CA is in there as well. NEW #821, 1KW at 1,066 miles. This would never be possible during normal cx with CFRN, KPOW, etc. in the way. This is auroral cx at its finest! I believe this is now the 4th new log since the CME hit.
660 is a dogfight of KGSV Oildale CA (Punjabi) and KTNN Window Rock AZ (Country), neither of which is very strong. 530-600khz is totally dead besides KPQ-560 and the local TIS(es) on 530.
XEMO-860 Tijuana BCN under SF. KRDC-1110 Pasadena in with Lakers basketball, very little pointed towards WA state. This was a tough catch even under Radio Disney/KDIS.
EDIT - another new one.
1440 - KFOO CA, Riverside; with 'BIN' ID at 1848 PT 2/28, mixed with KVON Napa, back into news update. NEW #822, 1KW at 883 miles. Nice to have this in the log as I have been looking for them for years!
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I used to hear WKBW underneath KOMA almost every night. Faint, but unmistakable. on very rare occasions, WKBW might even rise to the top for a few seconds during KOMA fades. A couple of times that even happened with a WKBW TOH ID.
I used to hear WMEX 1510 Boston under WLAC 1510 Nashville sometimes when it was Top 40. It was, as you said, unmistakable. As I recall, there was some kind of grandfathering of interference to WLAC.