Something I love to know an answer to if someone who has had this problem or knows the answer. Our translator sounds good on most radios but if you turn up the base on some radios it's audio gets fuzzy. We had to rent a Ford Fusion while our car is being fixed and that radio hates our translator base up or down while other station sound fine, it is fuzzy specialy on base notes. The radio is a stock Ford model with 6 CD/MP3 carrage. On my truck a 94 Mazda stock radio it sounds great and on our regular vechicle a 2004 Trailblazer sounds great too has well as all radios around the station and in my home but on our station DP's car radio if you turn on base loudness fuzzie other stations fine. The transmitter we are using is an old Harris Gates workhorse 1978 ver. I sure would like to find this problem if anyone knows what might be causing it.
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Audio distortion (fuzzy)
- Thread starter Gatekeeper007
- Start date
Overmod somewhere in the chain.
Depending on the radio as noted in previous posts about modulation, some radios will hear it, some won't.
Look at the baseband on the exciter input and put a mod monitor on the rig to double check it.
Many translators are set for "ear level" and this isn't a good comparison. If you can frive to a point to hear translator and main channel station then you can compare the two with buttons on the radio. Mod should be identical if at this location you have a good and stereo signal on both.
Depending on the radio as noted in previous posts about modulation, some radios will hear it, some won't.
Look at the baseband on the exciter input and put a mod monitor on the rig to double check it.
Many translators are set for "ear level" and this isn't a good comparison. If you can frive to a point to hear translator and main channel station then you can compare the two with buttons on the radio. Mod should be identical if at this location you have a good and stereo signal on both.
What is your modulation level? Some newer car stereos with lower bandwidth don't like it when you push the envelope. I would check my modulation and proof the system, especially if you find you have sufficient headroom in the system.
What kind of reciever are you using to pull your signal off as well, and is it under adverse conditions?
What kind of reciever are you using to pull your signal off as well, and is it under adverse conditions?
One other thing to check. Make sure the translator is not passing something like a subaudible tone, or perhaps a hum in the audio which is causing the Ford's radio to react this way. As other have alluded to, some car radios won't produce the artifact that you describe while other will.
I had a problem like this many years ago with a system that had a hum on the program line. Turned out to be a 25 hz cue tone generator used to trip something at the TX site. But the tone was getting into the program path. On most newer radios the station sounded OK, but on an older legacy radio (1981 Ford Fairmont), the distortion in the bass was real prominent.
I had a problem like this many years ago with a system that had a hum on the program line. Turned out to be a 25 hz cue tone generator used to trip something at the TX site. But the tone was getting into the program path. On most newer radios the station sounded OK, but on an older legacy radio (1981 Ford Fairmont), the distortion in the bass was real prominent.
I brought down the audio drive level going into Broadcast Electronics Compesser which helped the highs but base notes are still pushing it too much. I think I will double check the preference curve and tighten each bands cutoff responce. Thanks for the responces I needed a good starting point figure this out.
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