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Intersection Left Turn-FM Station Change?

4K views 54 replies 8 participants last post by  OkieRich 
#1 · (Edited)
Doesn't do it on XM, and I don't listen to AM, HOWEVER:
Yesterday. Strange occurrence. Twice. Listening to a local sports talk radio station. Once while sitting at a red light. Left, inside turn lane. Light turns green, I turn. Station changes.

Second time, turning left off main Highway onto neighborhood street. Bang. Did it again.

Clockspring? Nav internals? I wouldn't have a clue. Will watch for recurrences over next several weeks for repeatability/duplication. Oil change end of month. Will bring it up to my service guy then, if it continues.

And does not occur on Bluetooth while in media mode. Just the FM band. I may try AM and see if I can get the same result. So, if CNN broadcasts video of some old grey-haired codger making continuous left turns in Okc...and if it is a white 2017 Elantra... :rolleyes:

Ideas, gurus?
 
#2 ·
Yeah. Your cuff is hitting the button that changes the channel.

Could be worse. I hit the cruise control "Resume" function. I did it once at a stop light. The light turned green, I turned, shifted into second and hit "Resume" by accident.

It was set for 68 MPH. :eek:
 
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#9 ·
It sounds normal per owner's manual pg 4-6:

FM broadcasts are transmitted at
high frequencies and do not bend to
follow the earth's surface. Because
of this, FM broadcasts generally
begin to fade within short distances
from the station. Also, FM signals are
easily affected by buildings, moun-
tains, and obstructions. This can lead
to undesirable or unpleasant listen-
ing conditions which might lead you
to believe a problem exists with your
radio.

The following conditions are
normal and do not indicate radio
trouble:

• Station Swapping - As an FM signal
weakens, another more powerful
signal near the same frequency
may begin to play. This is because
your radio is designed to lock onto
the clearest signal. If this occurs,
select another station with a
stronger signal.
In other words, The Sports Animal kicked that weak signaled The Franchise off your radio! ;)
 
#10 ·
It sounds normal per owner's manual pg 4-6:

In other words, The Sports Animal kicked that weak signaled The Franchise off your radio! ;)
Wouldn't surprise me.. that station is the worst. If you ever find yourself near OKC and like sports, avoid that station like the plague. I put a timer on them one day (before we got another sports station) and they had 8 minutes of commercials for every 6 minutes of their show. It's ridiculous.

Sorry, we are derailing Okie's thread. Sounds like this could be the problem, but I haven't had a similar experience and we listen to the same station. Not exactly apples-to-apples, but I do live further away from their station than he does.
 
#16 ·
Nutz...can't find it...
There was a (I think) Honda commercial with Michael Andretti and he's teaching someone to drive, and every time they come to an intersection he says, "Turn left". After the 4th or 5th time the guy getting the lessons says, "Why don't we ever turn right?" and Michael says, "Why would anyone want to turn right???"
 
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#22 ·
You may be onto something. Brief, momentary loss of signal on the turn. Maybe just a coincidence that I was always in left turn mode when it occured. If it happens again. I'll backtrack that route and turn right where I had turned left. Other than that, I don't know any other approach to take.

Signal strength just may be it. Never happens on XM, Apple Car Play, or Bluetooth from the phone. :thumbsup: :thumbsup:

You guys must be smarter than you look. Well, Uncle @Old's Cool not withstanding. Only so much can be done to assist him.
 
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#23 ·
You may be onto something. Brief, momentary loss of signal on the turn. Maybe just a coincidence that I was always in left turn mode when it occured. If it happens again. I'll backtrack that route and turn right where I had turned left. Other than that, I don't know any other approach to take.

Signal strength just may be it. Never happens on XM, Apple Car Play, or Bluetooth from the phone. :thumbsup: :thumbsup:

You guys must be smarter than you look. Well, Uncle @Old's Cool not withstanding. Only so much can be done to assist him.

Thank God I'm not as dumb as I look...:eek:
 
#24 ·
https://hdradio.com/broadcasters/engineering-support/properly-adjust-time-and-level-alignment

HD Radio is a hybrid technology that utilizes two separate but identical streams of audio simultaneously broadcast over the analog and digital program channel. Due to signal processing delays introduced in the digital audio path of HD Radio system, the analog audio must be delayed to synchronize (aligned in time) to the digital audio. This time alignment is necessary as the HD Radio receiver transitions or blends from the analog to the digital signal when first tuned to a station or at the edge of the digital signal coverage where the receiver will blend back to the analog signal. Aligning the signal requires the main analog audio signal to be delayed approximately 8 seconds to match the digital audio’s time delay. The audio levels between the two audio streams must also be matched so there is a smooth transition when the receiver blending occurs. When the audio delay and level are set correctly, the blend between the analog and digital streams are seamless.
The HD infrastructure may not be sufficient. More data takes money and time to develop everything needed to support it fully.

Or, I could be when they installed your radio Igor was working and the one he choose was Abby Normal.
 
#25 ·
https://hdradio.com/broadcasters/engineering-support/properly-adjust-time-and-level-alignment

HD Radio is a hybrid technology that utilizes two separate but identical streams of audio simultaneously broadcast over the analog and digital program channel. Due to signal processing delays introduced in the digital audio path of HD Radio system, the analog audio must be delayed to synchronize (aligned in time) to the digital audio. This time alignment is necessary as the HD Radio receiver transitions or blends from the analog to the digital signal when first tuned to a station or at the edge of the digital signal coverage where the receiver will blend back to the analog signal. Aligning the signal requires the main analog audio signal to be delayed approximately 8 seconds to match the digital audio’s time delay. The audio levels between the two audio streams must also be matched so there is a smooth transition when the receiver blending occurs. When the audio delay and level are set correctly, the blend between the analog and digital streams are seamless.
The HD infrastructure may not be sufficient. More data takes money and time to develop everything needed to support it fully.

Or, it could be when they installed your radio Igor was working and the one he choose was Abby Normal.
 
#26 ·
So, turning the HD radio back on, tuning into 107.7 and making nothing but left turns, I was not able to get the same issue of the radio switching stations. I'm officially out of ideas here. Maybe an exorcism is needed.
 
#27 ·
I believe you guys have fixed my problem!!! Here's what I discovered, yesterday. Backed out of the driveway, pulled up along the curb waiting for son to come out of the house so we can proceed to Dallas. Listening to 107.7 FM, HD. Trying to remain consistent for repeatability testing.

Car is idling, stationary, and just me. So far, nothing has changed. He walks up, opens the passenger door and begins his approach towards the seat. Hadn't actually began the bending process to enter. Still somewhat standing. BANG! Signal loss. Car flips to another HD signal.

So, I asked him to humor me. Get out, come back and reopen the door. He did, SIGNAL LOSS.

Didn't feel like mucking around with it again to get more test results. But I think it's safe to say that it was that ever-so-slight moment where the FM HD signal became blocked. I honestly believe that was the problem. And those times I lost the signal? Even though they were ALL left turns? Pure coincidence.

Appears you guys are spot-on. You nailed it! Thanks! I'm feeling a lot better, now. You understand: radio signal starts going today, engine falls thru the frame mounts tomorrow...precursory stuff like that? ;)
 
#37 ·
@Old's Cool: Uh, yeah.. I will as soon as I can get the cherry picker out and lift thsee booklets from the glove box. Avoids getting a hernia, you understand? LOL :grin: back atcha!

Yeah...the Scion came with the equivalent of the World Book Encyclopedia...
 
#35 ·
I actually had this happen a lot in my Sonata but it was always when I was getting out of the car. I would use the wheel to pull myself out of the car and it would change the function. It only did it when I was getting out of the car. For reference my clock spring is toast and needs to be replaced. Also this happened a couple of times in the same scenario in the 16 Accent rental I had while Hyundai was changing my engine. Since it also happened in that car I didn't think the clock spring was the culprit and maybe a ghost in the machine. lol Good luck
 
#42 ·
I'm still not sure what is going on here ...

At first I was thinking clock spring/preset switch, but OR said it stays on 107.7 on the radio, but switches the content.

https://en.wikipedia.org/wiki/KRXO-FM

https://radio-locator.com/cgi-bin/patg?id=KRXO-FM

Typically, locally music stations will broadcast the analog signal and then have the same content on HD-1 - but they might have a jazz or other signal on HD-2.

Often talk stations do NOT have a HD signal b/c there is about a five second delay between analog and HD (music syncs for this), but they don't want to sync it for talk, b/c if you were watching a game live and listening to the play-by-play, it wouldn't sync up.

The article above might be out of date, but it shows 107.7 doesn't have an HD-1 feed, but doesn't have oldies on HD-2 and spanish on HD-3.

There are two possibilities that I can see:

- Perhaps the signal was dropping out and it switched over to the HD-2 or HD-3 feed, but it shouldn't do this - normally you have to manually select that - and it stays on that - i.e. if you are listening to HD-1 and get out of range, it drops back to analog. If you are listening to HD-2 and go out of range, it drops to silence.

- FM reception is fairly strange in general though. I don't have HD radio in the car anymore, but on my drive to work, I am in the DISTANT, not fringe, range for my local news/talk station. But under the right conditions, the station will drop out and I get clear signal on a country station from Dothan AL - that is in south AL and I am well beyond the fringe coverage for it, but it happens. I suspect that is what is going on, and sadly there isn't much you can do about it.
 
#43 · (Edited)
Thanks, @Tiger-Heli! Still have the HD tab off. Had 107.7 drop out when I intentionally made some sharp left turns a couple days ago. Virtually on 3 compass points. Lost the feed each time.

My oil change has been move to 0730, Monday. I talked with my guy today. He let me know his top tech won't be there Saturday so we both felt it might be a good idea to move the appt. over. I'll keep you guys informed as to the findings, if any.

Having just posted this, a thought. Gradual left turns? No loss. Sudden semi-jerking of the wheel to make the turn as sharp as possible? Signal loss.

Hmm...clockspring coming back into focus as a bulleted point? I ask because I certainly can't explain it. :puzzled: maybe we will all know Monday. Hopefully.
 
#44 ·
It isn't clockspring ...

- First off, it happened when your son walked up to the car - no movement of the steering wheel, no interface with the clockspring.

- Second, the SWC control presets and volume - not even tuning. If you were on Preset 5 and it went to Preset 6, or if there were a tuning button and it went from 107.7 to 107.9, it could be clockspring, but you said it stays on 107.7 and just changes what music/talk is being received. That is a reception issue.

Things I can't explain:

- The fast vs. slow turns: As far as I know, Hyundai has a fairly basic radio with the AM/FM antenna on the rear window. Toyota for several years had a dual-diversity system where there were two antennas and the radio selected the strongest antenna signal, and I could see that maybe doing that, but I don't think Hyundai does that. Also - it would be possible now to "buffer" the signal (similar to caching with a CD player to avoid skips), the radio could delay the signal feed by 1-2 seconds and compare the last to the next signal coming in, but I don't think Hyundai does that either. It might be the nature of FM - i.e. you get more interference/signal loss with rapid changes in antenna orientation - but I don't know that.

- Also not sure if there is an issue - i.e. do you have a loose antenna wire making your FM reception worse than other Elantras, or do all Elantras act like yours and you are just the only one to notice it?
 
#45 · (Edited)
PROBLEM FOUND! Guys, you ARE going to believe this one: Cause of the channel/station INTERMITTANT CHSNGE? Ready? I/O error. That's correct: "Ignorant Operator!" Yours truly.

How could that be? I'm glad you asked. Those of you that have read some of the "rattle inside car" posts and discover it was the sunglasses, etc, in the overhead? Same kinda gremlin. But different.

I bought this litter bag, see? It fits my OCD-ness. Not wanting to drill a hole for mounting, I cleaverly found a way to temporarily hang it up until a brighter solution came along. A brighter owner, not a brighter solution was the Rx. Man, I discovered the channel change over as I was putting a Lowe's receipt into the top of said litter bag and I lost my channel. [Insert light bulb emoji, here]. Pic explains it! Yours truly: ----->:wacko:
@Old's Cool, @Tiger-Heli, and @Freeway Surfer are gonna have a field day with this one. Go ahead, fellas. I'm a big boy. I can take it!

I should take off my wheel and apologize to my clockspring. Closing this issue on a positive and humble note:Glad it wasn't the tech that reported this in front of me and his friends in back. There's no end to the ribbing.
 

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#46 ·
PROBLEM FOUND! Guys, you ARE going to believe this one: Cause of the channel/station INTERMITTANT CHSNGE? Ready? I/O error. That's correct: "Ignorant Operator!" Yours truly.

How could that be? I'm glad you asked. Those of you that have read some of the "rattle inside car" posts and discover it was the sunglasses, etc, in the overhead? Same kinda gremlin. But different.

I bought this litter bag, see? It fits my OCD-ness. Not wanting to drill a hole for mounting, I cleaverly found a way to temporarily hang it up until a brighter solution came along. A brighter owner, not a brighter solution was the Rx. Man, I discovered the channel change over as I was putting a Lowe's receipt into the top of said litter bag and I lost my channel. [Insert light bulb emoji, here]. Pic explains it! Yours truly: ----->:wacko:
@Old's Cool, @Tiger-Heli, and @Freeway Surfer are gonna have a field day with this one. Go ahead, fellas. I'm a big boy. I can take it!
LOL! That's a nice set-up you've got there! Glad it got all sorted out!
 
#48 ·
Except ...

I can understand you were listening to 107.7 and the bag shifted and moved the knob and the radio tuned to 107.9 and lost the signal ...

But you said the radio always stayed on 107.7 but switched from sports talk to music ...

The bag could change the tuning frequency, but if the tuning frequency stayed the same and the format changed, it is reception, not channel changing ...
 
#51 ·
Ya know? Valid point. You can bet I'm going to try and duplicate this as much as possible this w/e. I need to make absolutely sure before Monday's o/c.

And to @Freeway Surfer: This is nothing compared to stunts I've pulled in the past. Most of which were funny at the time. Those that weren't became so as I recounted them later. I can stand to get as good as I can give. In fact, if sharing this stuff and my ocassional goofs brings a certain moment of joy to someone? All the better.. And if I have to tell on myself, what's the harm? Someone smiled...somewhere. Hopefully.

To err is human. To goof up like I did? No words. LOL
 
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#49 ·
Holy smokes this is hilarious. This is one of those moments where OC, TH and myself look at each other realizing just how cool we appear even in our falters b/c Rich reached an entire new level.

I wouldn't share this moment with the wife unless you plan on her dying from laughter.
 
#54 ·
Okay - I can buy that it changed to 107.5 and you just didn't notice ... (At least that could be logically explained by the litter bag ...)

And to make you feel better, when I was googling station info for my reception info above, I had to look up the station frequency. I knew it was something around 95, but it's just Preset 1 on the radio, so I never bothered tuning it in (except initially when I got the car ...)
 
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