Someone told me today that WDYT was on at their new site. I switched over to it on the car radio and yes it did seem stronger but still a bit on the puny side. Does anyone know what's going on? Surely it will be stronger than what I heard this morning.
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Is WDYT on at new site?
- Thread starter Mike Sheridan
- Start date
A
audiomusiclover
Guest
Mike Sheridan said:
I wrote WDYT via their website the other week and they have moved to the new site, but are operating at only about 6000 watts at this point. I believe they said they were looking at bumping up to 25kw later in the month. One thing I have noticed when listening to 1220 in the north Charlotte area is that there is a loud audible interference on that frequency. I thought it was just my Pioneer car unit but noted that same interference also occurs on my little Sony walkman as well. I even noticed one morning last week, that I heard 610 coming thru on the 1220 freq for a few moments (ohhhh, Jim Celania bleeding thru). Hearing this makes me wonder if there is anything to 610 being 1/2 the frequency of 1220. Could that be related to the interference for 1220 on the north side of town?. I am just wondering if anyone else who has been sampling 1220 has experienced anything similar. If so, does anyone know if this could continue to be an issue even after 1220's power increase? If so, guess BT will still have free run of the place.
audiomusiclover said:
1220 is the first harmonic of 610. Every radio transmitter emits on its' intended frequency, and on the harmonics. A small amount of power is emitted on the first harmonic, less on the second harmonic, and even less on the third harmonic etc. The further from the transmitter you are, the lower the harmonic emission will be.
A couple of links to information on harmonics and harmonic interference.
http://www.radioing.com/eengineer/rfi.html See point #5
http://en.wikipedia.org/wiki/Harmonic
All radio stations are required by the FCC to suppress those harmonic emissions to a specified level, this is usually done by proper tuning of the transmitter and by harmonic traps within the transmitter. In the past, stations were required to do a "Proof of Performance" series of tests annually to among other things determine if the harmonic suppression was properly set up. This involved measuring signal strength on the harmonic frequencies at a certain distance from the transmitter. If the harmonic signal strength was over the prescribed limit, then the station was required to re-tune the traps etc. to lower the interference. Today, stations are still required to meet the same regulations, however they are not required to do those annual measurements. The FCC does not have enough inspectors to check every station annually so many stations no longer meet the technical requirements. This is due to engineering budget cutbacks as a result of deregulation.
I am not insinuation that WFNZ is out of tolerance on First harmonic interference, but that is one possibility.
Another possibility is that most AM receivers are poorly designed these days, so the problem may be in the poor design, or a combination of the two. The further you are from the 610 antenna system, the lower the interference will be.
It is also possible that you will experience less of this interference when WDYT increases its power to the full 25,000 watts.
WBT will continue to dominate. Like I said to the guy who told me that WDYT had their new signal on. AM start ups just don't do well. If you're on AM you better be established. Then there is the problem of WDYT's night signal.
I'd like to see someone buy WYFQ-AM from BBN. After all they have WYFQ-FM and even an FM translator at the WYFQ-AM site so it would seem 930 AM is redundent. Again this would be a start up operation. It would take a long time to even come close to WBT.
I'd like to see someone buy WYFQ-AM from BBN. After all they have WYFQ-FM and even an FM translator at the WYFQ-AM site so it would seem 930 AM is redundent. Again this would be a start up operation. It would take a long time to even come close to WBT.
Annual AM NRSC proofs are still required which include harmonic emission checks unless the station employs a splatter monitor.
Just another reason why WDYT will not be a factor in Charlotte radio--they might do ok in Gaston, though there is already another right-wing talker on 960 there. 870 would have a better chance to do something in Charlotte, if its ever built. Concerning 930AM, that is one AM frequency that maybe could have been somethng in Charlotte. With 940 long gone from Fayetteville, someone could probably have taken 930 in Washington NC silent and greatly increased 930's signal toward the east, day and night, covering much of the market with a good signal. I don't think WYFQ will ever let go of 930, however.
ncradioeng said:
Perhaps memory fails me, and I do have CRS, but I thought that the FCC had removed all actual physical measurement requirements years ago in deregulation. Each station still was required to meet the standards for frequency response, distortion and harmonic emissions, but was no longer required to do the annual tests. Deregulation left it up to the station owners how and when to determine if they were meeting toe specs.
Did that change since I left the business (1995), or is my memory faulty?
I know that when the Commission made that change, it took away a lot of my secondary income generated by doing those annual proofs, because most stations just stopped doing them entirely since the FCC no longer required it.
AM occupied bandwidth measurements are required annually. An audio proof is required when any major change is made in the audio chain (transmitter, console, STL, etc.). Upon FCC request, the last audio/RF proof must be made available for inspection. True, annual AF proofs are no longer required, but that does not excuse the licensee from the technical requirements set forth in the rules. Modulation monitors are no longer required either, but you still can't overmodulate.
Speaking of modulation monitors I miss having them in the studio. It's been a long time though. I also miss not being able to listen to the air signal because of the IBOC delay and profanity delay...and that's on a music intensive station!
Mike Sheridan said:
That would bug me to death in an on the air situation. I hated to have to listen straight off the board through my cans, I always listened to the air signal so that I could hear the processing and do a better mix when I was talking.
I bet that is why sometimes on XM the announcer is not heard well when he is talking over an intro of a record, especially Terry Young on the 60's channel.
jtudor said:
They had a special processed mix that was close to the processing on the air. It was good at first but I think somebody adjusted it and it didn't match the off air signal any longer.
jtudor said:
John, I don't think it's your memory. But if you relied on one of your previous employers to relay regulations to you...well...
Speaking of "previous employer", I couldn't see his tower lights the other morning around 5:30. Then, at second glance it appears they were all flickering. Like the Nationwide commerical, it must have the night clean up guy at the Italian Restaurant down the hill who discovered a new light switch, "Gee, this switch must not be working", while flipping it on, off, on, off, on, off...
Eric
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