FM reception problem in Santro

kousikorama · 8th July 2007, 15:15

I have a Santro Xing and recently upgraded my system as below:
HU: Blaupunkt Maui MP36
Front: BGx 402
Rear: GTx 693
New antenna as the old one was loose.

Now, whenever I change to radio and blow horn or accelerate, there is a hissing noise from speakers. With this noise, the actual volume level decreases - sometimes to inaudible levels. This happens in all channels, but least in Big 92.7 FM. I took the car to Hyundai to told that everything is fine, but the problem persists even after 2 visits.

Can anyone help me to identify what the problem is? My guess is this is a wiring problem. Should I ask the guys at the workshop as the audio salesman couldn't solve the issue.

DerAlte · 8th July 2007, 19:50

Interesting problem.

IMHO the problem is not linked with blowing the horn or accelerating. Quite likely the antenna is not connected properly with the HU - maybe the old antenna was just fine, but the connecting wire to the HU has got cut somewhere. The dealer is looking at the 2 ends of the wire only

, and never checked continuity. To the lazy dealer the logical answers are "antenna kharaab hai sir" or "HU mein to connected hai!?!".

Ask the shop guys to check the electrical continuity between the physical antenna and the other end of the antenna wire near the HU.

What you are hearing is the HU without the antenna. The stronger signals are working without the antenna, and the weaker signal is affected by attenuation due to buildings. We have the same problem with Fever 104 in Bangalore.

If you are getting a hiss or buzz, but the main signal sound is OK otherwise, that would be a problem of grounding of the HU. That is not the case here.

navin · 9th July 2007, 13:08

change the antenna cable to your HU and tape it at the HU end. Some lazy installers dont even bother to plug it in right.

san_pandey · 9th July 2007, 14:04

therez an antenna pin thats needed for BLU HUs(rs 150) its an interface bet ant and hu. donno whether ur antenna already has the pin...
you can go to BLU dealer to sort out this prob

kousikorama · 9th July 2007, 14:05

I am again going to Hyundai on Saturday for this problem. Will see how it goes this time.

falcon009 · 14th January 2010, 06:53

Hi All

I recently upgraded my Ritz Lxi with a new ICE setup. Its a simple setup with Pioneer HU and GT5 6" co axial speakers in the front doors. The problem of hissing comes only when I put on Radio and not prevalent when i play from the CD. When i told the dealer about my radio problem he mentioned that its because of the way the default antenna is setup in Ritz/Swift. Has anyone faced this problem before. Please help.

Jaggu · 15th January 2010, 15:28

I have a swift and have no issue with the stock antenna. Check if the antenna wire is connected properly.

rohan_iitr · 15th January 2010, 16:28

I have an i10 with stock antenna. My ICE is Blaupunkt Hamburg MP57 HU with JBL speakers (2 pairs - round 6" all fitted in the doors).

I have FM reception problem only for some stations. While Radio One (94.3MHz) is received very clearly, Radio Indigo (91.9MHz) is not clear. Hissing sound is heard on this station.

Is this normal in Bangalore ? Any way to improve reception for Radio Indigo ?

Rohan,
Bangalore

Jaggu · 15th January 2010, 17:23

It is not very normal, unless you are in a very bad signal area (basement car park egs). Have you checked if your HU has any settings for the FM reception?

yogeshnaik · 15th January 2010, 17:45

Have you purchased the BP Hamburg in India or Germany? try manually tuning the station and check. The FM stations normally have a range of 35+ Km radius. If you have external antenna, ensure that the antenna cable is properly connected to the Audio Head Unit.

Epic · 15th January 2010, 17:46

Hi guys,

I am having a very unusual problem with the music system in my Swift. Apart from the hissing sound when the system is on OR the 'thup' sound when I switch on my headlights OR when I switch my music system off OR the minute 'tick' sound that comes from the speakers when I press the brakes; the most weird problem is that I get an unusual interference through the speakers whenever an autorickshaw passes by my car. This only happes when autorickshaws pass by and not when other vehicles do. The probem occurs whether I play my radio or CDs.

I know this may sound really silly but it is true. I am as it is fed up of the other sounds & now this is a new one. Need your help on all this guys.

Jaggu · 15th January 2010, 17:55

Its solid interference in your electrical circuit. Get it checked and rewired with proper grounding. Meanwhile what all you have in your set up Epic?

Epic · 16th January 2010, 16:26

Quote:

Originally Posted by Jaggu

Its solid interference in your electrical circuit. Get it checked and rewired with proper grounding. Meanwhile what all you have in your set up Epic?

Hi Jaggu,

I had got the entire system rewired with Ground Zero cables from a professional installer about a year ago and the hissing sound and 'thup' sound when I switch the system off existed even after that but was told that something has blown off in the headunit which is the cause of this sound which could have happened when I first installed my system from another installer which were the official JBL store. The only solution is to get the headunit repaired/replaced.

The 'thup' sound when switching on my headlights started only after I upgraded my headlights to an HID kit. But this new interference with the autorickshaws has started recently

I am running the following :

Headunit - Pioneer 6950
Front Comp - JBL GTO 606Ce
Rear 6X9s - JBL GTO 937
12" Sub - Infinity Ref 1200T but installed in a sealed box
4 channel amp - JBL 75.4 (powering the comps & 6X9s)
Monoblock - JBL 301.1 for the sub.

drhoneycake · 30th January 2019, 15:39

I have the same problem too. OEM headunit of Fluidic Verna. FM reception is horrible. 91.1 is the only one I can listen to and even that gets distorted if I’m under a tree or driving fast on the highway. The other stations are barely audible with all the hissing noise.

Playing audio through USBs/via BT, the sound is absolutely crisp without an iota of distortion.

Finding it strange.

pganapathy · 31st January 2019, 14:18

Quote:

Originally Posted by drhoneycake

I have the same problem too. OEM headunit of Fluidic Verna. FM reception is horrible. 91.1 is the only one I can listen to and even that gets distorted if I’m under a tree or driving fast on the highway. The other stations are barely audible with all the hissing noise.

Playing audio through USBs/via BT, the sound is absolutely crisp without an iota of distortion.

Finding it strange.

It sounds like your system and antenna are not connected properly. Either a bad wire with a partial break/cut or not plugged it on one side. Simple enough to check. Just need to replace the entire wire or check it from one end to the other.

8th July 2007, 15:15	#1
kousikorama Newbie Join Date: Jul 2007 Location: Kolkata Posts: 4 Thanked: 0 Times	FM reception problem in Santro I have a Santro Xing and recently upgraded my system as below: HU: Blaupunkt Maui MP36 Front: BGx 402 Rear: GTx 693 New antenna as the old one was loose. Now, whenever I change to radio and blow horn or accelerate, there is a hissing noise from speakers. With this noise, the actual volume level decreases - sometimes to inaudible levels. This happens in all channels, but least in Big 92.7 FM. I took the car to Hyundai to told that everything is fine, but the problem persists even after 2 visits. Can anyone help me to identify what the problem is? My guess is this is a wiring problem. Should I ask the guys at the workshop as the audio salesman couldn't solve the issue.
	() Thanks

8th July 2007, 19:50	#2
DerAlte Senior - BHPian Join Date: Mar 2007 Location: Bangalore Posts: 8,069 Thanked: 2,919 Times	Interesting problem. IMHO the problem is not linked with blowing the horn or accelerating. Quite likely the antenna is not connected properly with the HU - maybe the old antenna was just fine, but the connecting wire to the HU has got cut somewhere. The dealer is looking at the 2 ends of the wire only, and never checked continuity. To the lazy dealer the logical answers are "antenna kharaab hai sir" or "HU mein to connected hai!?!". Ask the shop guys to check the electrical continuity between the physical antenna and the other end of the antenna wire near the HU. What you are hearing is the HU without the antenna. The stronger signals are working without the antenna, and the weaker signal is affected by attenuation due to buildings. We have the same problem with Fever 104 in Bangalore. If you are getting a hiss or buzz, but the main signal sound is OK otherwise, that would be a problem of grounding of the HU. That is not the case here. Last edited by DerAlte : 8th July 2007 at 19:52.
	() Thanks

9th July 2007, 13:08	#3
navin Team-BHP Support Join Date: Mar 2004 Location: Mumbai Posts: 25,196 Thanked: 9,292 Times	change the antenna cable to your HU and tape it at the HU end. Some lazy installers dont even bother to plug it in right.
	() Thanks

9th July 2007, 14:04	#4
san_pandey Newbie Join Date: Dec 2006 Location: hyderabad Posts: 24 Thanked: 0 Times	therez an antenna pin thats needed for BLU HUs(rs 150) its an interface bet ant and hu. donno whether ur antenna already has the pin... you can go to BLU dealer to sort out this prob
	() Thanks

9th July 2007, 14:05	#5
kousikorama Newbie Join Date: Jul 2007 Location: Kolkata Posts: 4 Thanked: 0 Times	I am again going to Hyundai on Saturday for this problem. Will see how it goes this time.
	() Thanks

14th January 2010, 06:53	#6
falcon009 BHPian Join Date: Dec 2009 Location: Bangalore Posts: 88 Thanked: 4 Times	Radio hissing noise in new ICE setup in Ritz Lxi Hi All I recently upgraded my Ritz Lxi with a new ICE setup. Its a simple setup with Pioneer HU and GT5 6" co axial speakers in the front doors. The problem of hissing comes only when I put on Radio and not prevalent when i play from the CD. When i told the dealer about my radio problem he mentioned that its because of the way the default antenna is setup in Ritz/Swift. Has anyone faced this problem before. Please help. Last edited by Jaggu : 15th January 2010 at 15:28. Reason: Please use Search and post in existing thread. Also check if you are in the right sub-forum. thanks
	() Thanks

15th January 2010, 15:28	#7
Jaggu Team-BHP Support Join Date: May 2004 Location: Bangalore Posts: 20,215 Thanked: 15,906 Times	I have a swift and have no issue with the stock antenna. Check if the antenna wire is connected properly.
	() Thanks

15th January 2010, 16:28	#8
rohan_iitr Senior - BHPian Join Date: Feb 2009 Location: Bangalore Posts: 1,129 Thanked: 820 Times	I have an i10 with stock antenna. My ICE is Blaupunkt Hamburg MP57 HU with JBL speakers (2 pairs - round 6" all fitted in the doors). I have FM reception problem only for some stations. While Radio One (94.3MHz) is received very clearly, Radio Indigo (91.9MHz) is not clear. Hissing sound is heard on this station. Is this normal in Bangalore ? Any way to improve reception for Radio Indigo ? Rohan, Bangalore
	() Thanks

15th January 2010, 17:23	#9
Jaggu Team-BHP Support Join Date: May 2004 Location: Bangalore Posts: 20,215 Thanked: 15,906 Times	It is not very normal, unless you are in a very bad signal area (basement car park egs). Have you checked if your HU has any settings for the FM reception?
	() Thanks

15th January 2010, 17:45	#10
yogeshnaik BHPian Join Date: Dec 2009 Location: Bangalore Posts: 347 Thanked: 216 Times	Have you purchased the BP Hamburg in India or Germany? try manually tuning the station and check. The FM stations normally have a range of 35+ Km radius. If you have external antenna, ensure that the antenna cable is properly connected to the Audio Head Unit.
	() Thanks

15th January 2010, 17:46	#11
Epic Senior - BHPian Join Date: Jan 2007 Location: Mumbai Posts: 1,558 Thanked: 922 Times	Very Weird Problem Hi guys, I am having a very unusual problem with the music system in my Swift. Apart from the hissing sound when the system is on OR the 'thup' sound when I switch on my headlights OR when I switch my music system off OR the minute 'tick' sound that comes from the speakers when I press the brakes; the most weird problem is that I get an unusual interference through the speakers whenever an autorickshaw passes by my car. This only happes when autorickshaws pass by and not when other vehicles do. The probem occurs whether I play my radio or CDs. I know this may sound really silly but it is true. I am as it is fed up of the other sounds & now this is a new one. Need your help on all this guys.
	() Thanks

15th January 2010, 17:55	#12
Jaggu Team-BHP Support Join Date: May 2004 Location: Bangalore Posts: 20,215 Thanked: 15,906 Times	Its solid interference in your electrical circuit. Get it checked and rewired with proper grounding. Meanwhile what all you have in your set up Epic?
	() Thanks

30th January 2019, 15:39	#14
drhoneycake BHPian Join Date: Aug 2014 Location: KA05,KA31,KA47 Posts: 581 Thanked: 1,779 Times	Re: FM reception problem in Santro I have the same problem too. OEM headunit of Fluidic Verna. FM reception is horrible. 91.1 is the only one I can listen to and even that gets distorted if I’m under a tree or driving fast on the highway. The other stations are barely audible with all the hissing noise. Playing audio through USBs/via BT, the sound is absolutely crisp without an iota of distortion. Finding it strange.
	() Thanks