Strange Occurance

[Robert Bass]

I’m not sure whether to post this here or in the Engineering board, but I’ll try it here first. KEOM was off the air Sunday morning due to a technical problem. One of my co-workers mentioned to me that when she got out of church that morning and tuned to 88.5 FM, she could hear a station that broadcasts at 88.7 FM. Obviously that doesn’t surprise me. But then she said that she could also hear 103.7 KVIL as well! How in the world could this be? How can 103.7 FM be heard at 88.5 FM? Is this a rare DX / Tunneling effect?

R

 

[AliceTheCook]

> I’m not sure whether to post this here or in the Engineering
> board, but I’ll try it here first. KEOM was off the air
> Sunday morning due to a technical problem. One of my
> co-workers mentioned to me that when she got out of church
> that morning and tuned to 88.5 FM, she could hear a station
> that broadcasts at 88.7 FM. Obviously that doesn’t surprise
> me. But then she said that she could also hear 103.7 KVIL
> as well! How in the world could this be? How can 103.7 FM
> be heard at 88.5 FM? Is this a rare DX / Tunneling effect?
>

It was just KVIL trying to siphon off KEOM's listeners. Ha. Does your friend live near Cedar Hill? There is so much crosstalk there that various stations pop up everywhere on the dial because of the antenna farm.

I heard the same thing too, but not KVIL, just 88.7 and the other 88.5 out of Mineral Wells, an oldies station.

 

[Robert Bass]

Funny. No, she lives right here in Mesquite, not far from the KEOM studios.

R


> It was just KVIL trying to siphon off KEOM's listeners. Ha.
> Does your friend live near Cedar Hill? There is so much
> crosstalk there that various stations pop up everywhere on
> the dial because of the antenna farm.
>
> I heard the same thing too, but not KVIL, just 88.7 and the
> other 88.5 out of Mineral Wells, an oldies station.

 

[rbrucecarter]

It sounds like she has one seriously bad radio. I suspect it might have only one ceramic IF filter - if so the stop bands are only down 40 to 50 dB, and therefore a strong signal on any local station will pop through off frequency.

As far as 88.7, it is not particularly strong in Plano, in fact it suffered from severe KEOM crosstalk before I put narrow ceramic filters in.

There is an oldies station on 88.5 not too far out west, I heard it in Plano last year when KEOM had technical problems for so long.

But crosstalk from 88.7 is strange on what otherwise sounds like a cheap radio. Perhaps she is hooking up and antenna to a radio not designed to be DX unit?

 

[edwardrmurrow]

> I’m not sure whether to post this here or in the Engineering
> board, but I’ll try it here first. KEOM was off the air
> Sunday morning due to a technical problem. One of my
> co-workers mentioned to me that when she got out of church
> that morning and tuned to 88.5 FM, she could hear a station
> that broadcasts at 88.7 FM. Obviously that doesn’t surprise
> me. But then she said that she could also hear 103.7 KVIL
> as well! How in the world could this be? How can 103.7 FM
> be heard at 88.5 FM? Is this a rare DX / Tunneling effect?
>
> R
>
It's weather created Harmonics. Sometimes KSCS can be heard at 93.5 in certain areas and conditions are right.

 

[Phantom]

Bruce, you lost me by the second sentence ...


> It sounds like she has one seriously bad radio. I suspect
> it might have only one ceramic IF filter - if so the stop
> bands are only down 40 to 50 dB, and therefore a strong
> signal on any local station will pop through off frequency.
>
> As far as 88.7, it is not particularly strong in Plano, in
> fact it suffered from severe KEOM crosstalk before I put
> narrow ceramic filters in.
>
> There is an oldies station on 88.5 not too far out west, I
> heard it in Plano last year when KEOM had technical problems
> for so long.
>
> But crosstalk from 88.7 is strange on what otherwise sounds
> like a cheap radio. Perhaps she is hooking up and antenna
> to a radio not designed to be DX unit?
>

 

[abcdj]

Might also have been the 'receiving' STL picking up the STL transmission from another station and sending it over your transmitter.
I recall this happening years ago one time when 1040 AM left their carrier and STL receiver on but turned the STL transmitter at the studio off. The STL locked onto the left channel of KVIL's stereo STL sending KVIL left channel only over 1040 AM.

 

[Robert Bass]

Interesting, although our transmitter was completely off due to the technical problem we were having.

R


> Might also have been the 'receiving' STL picking up the STL
> transmission from another station and sending it over your
> transmitter.
> I recall this happening years ago one time when 1040 AM left
> their carrier and STL receiver on but turned the STL
> transmitter at the studio off. The STL locked onto the left
> channel of KVIL's stereo STL sending KVIL left channel only
> over 1040 AM.
>

 

[ChrisTheListener]

Re: Strange Occurance - ME TOO!!!

I have heard MIX 102.9 at the very bottom of my radio tuner, which I think is like 88.1, or just 88. I was actually scared at the time! But, actually, you can ALWAYS pick up MIX 102.9 at about 88.0 or so. Try it. It's feaky, and why does it happen?? Can anyone explain it in English? (sorry Bruce, but I must second Batman's statement.)

CTL


> I’m not sure whether to post this here or in the Engineering
> board, but I’ll try it here first. KEOM was off the air
> Sunday morning due to a technical problem. One of my
> co-workers mentioned to me that when she got out of church
> that morning and tuned to 88.5 FM, she could hear a station
> that broadcasts at 88.7 FM. Obviously that doesn’t surprise
> me. But then she said that she could also hear 103.7 KVIL
> as well! How in the world could this be? How can 103.7 FM
> be heard at 88.5 FM? Is this a rare DX / Tunneling effect?
>
> R
>