Anyone else experiencing ...?
Thread Starter
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Elder User
Joined: Feb 2011
Posts: 639
Likes: 1
From: K.C. MO
Anyone else experiencing ...?
...the radio "skipping"?
I have an '11 with the NAV and it has done it occasionally since the beginning but lately it is happening over and over.
Listening to regular FM, it will all of a sudden jump back in time and replay the last 5 seconds or so of the song. I used to get a similar anomaly with satellite radio when I was foolish enough to pay them money but have long since let that expire, but this happens with a standard station on FM, not the "HD" channels either. The NAV unit says "acquiring 101.1" or what ever channel I happen to be listening to at the time when it skips and doesn't seem to be reception blocked related, like in a tunnel or overpass or parking garage, car wash etc. It does it out on the open road and near enough to town I should have plenty of signal.
Anyone else ever have this happen or is my NAV bad?
I have an '11 with the NAV and it has done it occasionally since the beginning but lately it is happening over and over.
Listening to regular FM, it will all of a sudden jump back in time and replay the last 5 seconds or so of the song. I used to get a similar anomaly with satellite radio when I was foolish enough to pay them money but have long since let that expire, but this happens with a standard station on FM, not the "HD" channels either. The NAV unit says "acquiring 101.1" or what ever channel I happen to be listening to at the time when it skips and doesn't seem to be reception blocked related, like in a tunnel or overpass or parking garage, car wash etc. It does it out on the open road and near enough to town I should have plenty of signal.
Anyone else ever have this happen or is my NAV bad?
FTE Chapter Leader
Joined: Jan 2006
Posts: 21,282
Likes: 8,004
From: North Central Washington
Does it happen more then one station? That sounds strange, how can your radio skip backwards on regular FM.
Could it be that the radio station you are listing to is broadcasting from to different location and are not in sync? No that can't be.
Does it happen every time you drive your truck? How about location, is it near the same location?
Could it be that the radio station you are listing to is broadcasting from to different location and are not in sync? No that can't be.
Does it happen every time you drive your truck? How about location, is it near the same location?
Thread Starter
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Elder User
Joined: Feb 2011
Posts: 639
Likes: 1
From: K.C. MO
Different stations (FM...I have not noticed it yet on AM but hardly ever listen to AM anymore), different locations, different times of day. Seems to be happening a bunch now...except when at the dealer's shop with a tech in the cab. 
I guess I will have to set up my camera and try to get some video of it happening.
I guess I will have to set up my camera and try to get some video of it happening.
FTE Chapter Leader
Joined: Jan 2006
Posts: 21,282
Likes: 8,004
From: North Central Washington
I don't get it. How can an FM broadcast go back in time? Along with your video you should take another radio with you and listen to them at the same time.
It's got to be the radio station or like Wild Wild West said "you have found a tear in the space time continuum".
It's got to be the radio station or like Wild Wild West said "you have found a tear in the space time continuum".
Lead Driver
Joined: Dec 2012
Posts: 7,870
Likes: 47
From: Tennessee
Strange , I thought I read this 5 min. ago ... I have heard radio skip , but not usually on FM . And not on a regular basis . Something odd with your head unit I think . Not the head on your shoulders , by the way .
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Posting Guru
Joined: Jan 2010
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From: Whitecourt AB, Canada
I don't have the upgraded nav unit to be able to provide first hand experiences with the interface, but although you seem to rule out HD radio as the culprit the symptoms you describe certainly sound like it.
If the receiver is a HD Radio unit AND signal has reached the low RSSI threshold or multipath or otherwise degradation of the signal causes the receiver to switch from IBOC to FM demodulation and vice versa, the audio over IBOC is typically delayed compared to the analog FM because of the codec. From a broadcast engineering standpoint there needs to be a delay added to the FM analog exciter so that when the receiver switches between IBOC and FM, there is no - or realistically minimal interruption. I'm surprised of the amount of stations that implement IBOC but omit the step of delaying the FM analog to make this transition seamless.
If the receiver is a HD Radio unit AND signal has reached the low RSSI threshold or multipath or otherwise degradation of the signal causes the receiver to switch from IBOC to FM demodulation and vice versa, the audio over IBOC is typically delayed compared to the analog FM because of the codec. From a broadcast engineering standpoint there needs to be a delay added to the FM analog exciter so that when the receiver switches between IBOC and FM, there is no - or realistically minimal interruption. I'm surprised of the amount of stations that implement IBOC but omit the step of delaying the FM analog to make this transition seamless.
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...the radio "skipping"?
I have an '11 with the NAV and it has done it occasionally since the beginning but lately it is happening over and over.
Listening to regular FM, it will all of a sudden jump back in time and replay the last 5 seconds or so of the song. I used to get a similar anomaly with satellite radio when I was foolish enough to pay them money but have long since let that expire, but this happens with a standard station on FM, not the "HD" channels either. The NAV unit says "acquiring 101.1" or what ever channel I happen to be listening to at the time when it skips and doesn't seem to be reception blocked related, like in a tunnel or overpass or parking garage, car wash etc. It does it out on the open road and near enough to town I should have plenty of signal.
Anyone else ever have this happen or is my NAV bad?
I have an '11 with the NAV and it has done it occasionally since the beginning but lately it is happening over and over.
Listening to regular FM, it will all of a sudden jump back in time and replay the last 5 seconds or so of the song. I used to get a similar anomaly with satellite radio when I was foolish enough to pay them money but have long since let that expire, but this happens with a standard station on FM, not the "HD" channels either. The NAV unit says "acquiring 101.1" or what ever channel I happen to be listening to at the time when it skips and doesn't seem to be reception blocked related, like in a tunnel or overpass or parking garage, car wash etc. It does it out on the open road and near enough to town I should have plenty of signal.
Anyone else ever have this happen or is my NAV bad?
I have a 12 w nav and I have the same thing happen in mine.... so wonder if its the HD radio and how some stations have more than one broadcast going on at once or what... It drives me nuts, but it happens every time i turn on the radio... Hope someone has some answers.
Senior User
Joined: May 2012
Posts: 391
Likes: 0
From: Frisco, TX
I haven't heard this one nor experienced but will tell you that acquiring stations on my unit SUCKS. I get hazy FM stations that jump from regular FM to HD. When I hit "seek" it shows only one station here in Dallas. I'm going to the stealer on Wednesday to have this looked at and maybe they will tell me something on this as well. I believe, not a techie here, that our units can't clearly define HD and regular FM channels....or something thereof.
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Elder User
Joined: Feb 2011
Posts: 639
Likes: 1
From: K.C. MO
Whew!....It's not my "head unit" (the one on my shoulders 
) I was starting to worry.
I will start noticing it when it happens and start taking better notes rather than just being annoyed.
Glad I bought the 7 year warranty.
I bet the NAV unit isn't cheap, as I am over the 3yr/36000mi.
) I was starting to worry.I will start noticing it when it happens and start taking better notes rather than just being annoyed.
Glad I bought the 7 year warranty.
I bet the NAV unit isn't cheap, as I am over the 3yr/36000mi.
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