I was getting wsb 750 from atlanta, wcbs 880 from NYC, 1100 wtam from cleveland, ohio, 670 from chicago, wbz 1030 from boston who 1040 from Des Moines, IA, 1190 from NY, wsm 650 from nashville, 780 from NYC, whas 840 from loiusville, ky, kdka 1020 fron pitsburgh, pa, thisd was all from 1am till 2:30am on July 11, 2006.
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AM DXing in Cincinnati, OH 07.11.06
- Thread starter robmadden1
- Start date
1
1q2w3e
Guest
robmadden1 said:
Sorry to burst your bubble but I would consider these to be normal stations. I used to live in Milwaukee and could get WLW there DURING THE DAY. You should be able to get 840 WHAS during the day quite clearly. Probably even WTAM and WSM during the day as well.
BTW 780 would not be from NYC but WBBM Chicago. Perhpas you meant 770 WABC?
Try 820 WBAP, 1120 KMOX, 1200 WOAI.
Have fun!
These are all night time stations some I dont normally get. Some were very hard to get in and listen to and figure out the call letters.
robmadden1 said:
The station you got out of NY was WHAM 1180 Rochester.
When I lived in Rochester, I could pull in WLW 700 Cincinnati easily at night. I could get as far as WCCO 830 Minneapolis, WHO 1140 Des Moines, KMOX 1120 St. Louis, WBAP 820 Fort Worth, WWL 870 New Orleans, and WSB 750 Atlanta. I pulled in WHAM 1180 Rochester while in southern Kansas once.
Try these:
NYC - WFAN 660, WOR 710 (might be hard due to WLW)
Schenectady NY - WGY 810
Hartford CT - WTIC 1080
Dallas/Fort Worth - WBAP 820, KRLD 1080
Chicago - WGN 720, WBBM 780, WLS 890, WMVP 1000
Philadelphia - KYW 1060, WPHT 1210
New Orleans - WWL 870
Omaha - KFAB 1110
Charlotte NC - WBT 1110
Little Rock AR - KAAY 1090
Minneapolis/St. Paul - WCCO 830, KSTP 1500
St. Louis - KMOX 1120
Tulsa - KFAQ 1170
Oklahoma City - KOKC 1520
Buffalo NY - WWKB 1520
Really good catches would be KOA 850 Denver, KKOB 770 Albuquerque and WOAI 1200 San Antonio.
If you can get a location and a frequency on a station (doesn't have to be exact), you can get the exact frequency and call letters using the FCC's AM Query. (http://www.fcc.gov/mb/audio/amq.html)
According to "Where's That Station?" my house is 4.86 miles from the WLW transmitter. This is close enough to the station that it comes in crystal clear 24/7, but yet far enough away for me to be able to pick up 720 WGN on a regular basis. On really lucky nights, I've managed to pull in 710 WOR. Lately, WOR hasn't been coming in at all. Are they still off air at night working on that transmitter move? Anyway, I did get KOA one night, which is pretty good for me. A poster above commented that we should get WHAS, WSM and WTAM during the day. WHAS is the only one I've gotten during the day reliably. WTAM I can barely hear because of stations on 1090 and 1110. For some odd reason, 1560 WCNW comes in on 650, so I've never been able to get WSM. Some faraway stations I've gotten during the day are 760 WJR and 800 CKLW.
For some odd reason, 1560 WCNW comes in on 650, so I've never been able to get WSM. Some faraway stations I've gotten during the day are 760 WJR and 800 CKLW.
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Let me see if I can explain this bit of radio theory why 1560 comes in on 650. It's pretty technical but it has to do with the construction of your radio and the electronics theory behind it. There is a 910 khz factor in radio electronics that causes this. This I know by listening to the Radio Taipei International station ouf of Taiwan. They broadcast at 5950 khz in the evenings but I often hear the station at 5040 KHZ in the evenings or thereabouts due to my radio not have adequate suppression of adjacent signals. Has something to do with IF but I am not a master at electronics, yet, knock on wood. Hope this helps and I will try to find a good explanation for it. I need to do my homework, haha.
Have a good one!
[/quote]
Let me see if I can explain this bit of radio theory why 1560 comes in on 650. It's pretty technical but it has to do with the construction of your radio and the electronics theory behind it. There is a 910 khz factor in radio electronics that causes this. This I know by listening to the Radio Taipei International station ouf of Taiwan. They broadcast at 5950 khz in the evenings but I often hear the station at 5040 KHZ in the evenings or thereabouts due to my radio not have adequate suppression of adjacent signals. Has something to do with IF but I am not a master at electronics, yet, knock on wood. Hope this helps and I will try to find a good explanation for it. I need to do my homework, haha.
Have a good one!
A
autopaint-1
Guest
The 1190 you heard from NY is WLIB. Since WOWO was downgraded at night (we can still ocassionally hear them in a NYC suburb) WLIB has been able to operate with 35 Kw post sunset. They are 10 Kw day.
w9sun said:
Most of the amplifier and demodulator circuits in your radio are always tuned to the same frequency, to wit 455KHz. By not having to tune them, it's a lot easier to provide enough selectivity (to separate stations) and to keep gain consistent. (so that stations on 1530 don't sound much, much louder than those on 700)
Of course, the station you want to listen to isn't actually broadcasting on 455. So your radio has to have a "frequency converter" circuit to convert the frequency of the station you choose to listen to to the magic 455 figure. This converter consists of a "local oscillator" which generates a "dead air" signal, and a "mixer" which mixes the dead air signal with the signal from the desired station.
Let's imagine the desired station is WSM 650. You adjust the dial on your radio to read 650 - the local oscillator is adjusted to generate that dead air on 1105. [1] Two signals go into the mixer -- WSM 650 and the dead air on 1105. Four signals come out: the two you put in, their sum (1105+650=1755KHz); and their difference. (1105-650=455KHz) The rest of your radio picks this 455KHz signal out of the mess, amplifies it, and sends it to the speakers. This 455KHz signal is known as the "Intermediate Frequency", or "IF".
Now, let's imagine there's also a powerful station WCNW on 1560. This signal gets into the mixer, along with the dead air. Again, you get four outputs: the two inputs on 1105 and 1560; their sum (1105+1560=2665KHz); and their difference. (1105-1560=455KHz [2])
The IF amplifier circuits in your radio can't tell whether a 455KHz signal results from the desired 1105-650 difference, or from the undesried 1105-1560 difference. It'll play them both.
A good radio employs a "presector" to get rid of as much "signal that isn't 650" as possible when the dial is set to 650. Even then, the preselector isn't perfect; some WCNW will still get through. But most AM radios aren't "good", they tend to skimp badly in this circuit.
The magic 910KHz figure is twice the intermediate frequency. 455 is by far the most common value but 450 is also fairly common (which results in a magic number of 900) I also see 460 and on occasion, 262.5. Also, for FM the frequency is usually 10.7 which makes the magic number 21.4. Since this is greater than the width of the FM band, you won't hear this kind of interference on FM.
[1] in fact, if you grab another radio and tune it to 1105, you might be able to hear that dead air signal.
[2] yes, it's actually -455KHz. But there's no such thing as negative frequency. Instead, the phase of the 455KHz difference signal is flipped. Neither you nor your radio can tell the difference.
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