Audio/Electronics Stereo System Installation Info, Amplifiers, Subwoofers, Radar Detectors, Police Scanners, and CB Radios for the Corvette

Poor Radio Reception with New Kenwood 9980

Old 05-27-2011, 10:21 AM
  #1  
Craig P
Racer
Thread Starter
 
Craig P's Avatar
 
Member Since: Mar 2008
Location: Palmetto, FL
Posts: 390
Received 2 Likes on 2 Posts

Default Poor Radio Reception with New Kenwood 9980

Does any one know if there is anyway to improve radio reception whick is much worst than the stock radio and very unacceptable.

This is installed in a 2008 Corvette Coupe and the antenna is properly powered and working.


Thanks,
Craig
Old 05-27-2011, 12:10 PM
  #2  
jcgunn
Melting Slicks

 
jcgunn's Avatar
 
Member Since: Mar 2004
Location: Horseshoe Bend ID
Posts: 2,052
Received 276 Likes on 183 Posts

Default

Craig,
The Coupe has two antennas. With an aftermarket H/U many guys find that they need to provide a 5V source to the antenna amp (I think it's the pink wire in driver A-pillar but ask someone who knows for sure) Do a search of the forum on this topic. If you find that you need a 5V source just PM me and I'll send you the one I made up until I figured out that my Vert power antenna does not need this.



(It's the chip on the alum plate with the red/black/green wires at the top of the photo)
Old 05-27-2011, 12:32 PM
  #3  
RedZ4me
Le Mans Master
 
RedZ4me's Avatar
 
Member Since: May 2011
Location: Ontario
Posts: 5,051
Received 421 Likes on 256 Posts

Default

When I owned a piece of crap Honda civic at one time, I had the same issue, you may not believe this but as antenna's age, they become weaker. I changed it out and night and day. Now yours being an 08, I'd doubt same problem though
Old 06-06-2011, 11:49 AM
  #4  
Craig P
Racer
Thread Starter
 
Craig P's Avatar
 
Member Since: Mar 2008
Location: Palmetto, FL
Posts: 390
Received 2 Likes on 2 Posts

Default Solved!

I installed a $7 antenna amplifier (from ebay) and the radio reception is as good as the stock unit.Car Antenna Radio AM & FM Signal Amp Amplifier Booster (390318737462)

Very happy now!
Old 06-06-2011, 03:57 PM
  #5  
markcz
Tech Contributor
 
markcz's Avatar
 
Member Since: May 2003
Location: North Augusta, SC
Posts: 7,032
Received 131 Likes on 113 Posts

Default

Originally Posted by Craig P
I installed a $7 antenna amplifier (from ebay) and the radio reception is as good as the stock unit.Car Antenna Radio AM & FM Signal Amp Amplifier Booster (390318737462)

Very happy now!
Nice find
Old 12-14-2011, 06:17 PM
  #6  
RLSebring
Supporting Vendor
Support Corvetteforum!
 
RLSebring's Avatar
 
Member Since: Sep 2007
Location: Pensacola Florida GO GATORS!!! www.rlsebring.com www.c6c7vette.com
Posts: 11,216
Received 174 Likes on 92 Posts
St. Jude Donor '17

Default

Originally Posted by Craig P
I installed a $7 antenna amplifier (from ebay) and the radio reception is as good as the stock unit.Car Antenna Radio AM & FM Signal Amp Amplifier Booster (390318737462)

Very happy now!

I just did the same. Went from hardly any HD to HD with some HD2 channels. I've lived with this crap for about a year up till I installed this.

I would not have thought...

Last edited by RLSebring; 12-23-2011 at 01:04 AM.
Old 01-13-2012, 02:35 PM
  #7  
tomikem
Instructor
Support Corvetteforum!
 
tomikem's Avatar
 
Member Since: Mar 2011
Location: Vancouver, BC, Canada
Posts: 212
Received 37 Likes on 25 Posts

Default

Originally Posted by RLSebring
I just did the same. Went from hardly any HD to HD with some HD2 channels. I've lived with this crap for about a year up till I installed this.

I would not have thought...
Where did you install it. Did you have to install it at the HUD?
Old 01-13-2012, 02:42 PM
  #8  
RLSebring
Supporting Vendor
Support Corvetteforum!
 
RLSebring's Avatar
 
Member Since: Sep 2007
Location: Pensacola Florida GO GATORS!!! www.rlsebring.com www.c6c7vette.com
Posts: 11,216
Received 174 Likes on 92 Posts
St. Jude Donor '17

Default

Originally Posted by tomikem
Where did you install it. Did you have to install it at the HUD?
I removed the radio and unplugged the stock antenna then plugged this into the radio andplugged the stock antenna back in to this booster. Then found 12v right at the radio wiring and connected.

Instant HD that I could never receive at my house. In fact since installing this I've noticed a multitude of stations when I am on the road that I was never ever able to receive before.

For me it definately took care of the reception problem. For around 12 bucks it's certainly worth the money to give it a try in your case.
Old 01-14-2012, 01:33 PM
  #9  
RetiredSFC 97
Team Owner
 
RetiredSFC 97's Avatar
 
Member Since: Jan 2009
Location: Somewhere in Mo
Posts: 73,434
Likes: 0
Received 31 Likes on 27 Posts
St. Jude Donor '09-'10, '14

Default

I bet all you needed to do was power up that pink wire. For some reson they require power to the built in antenna amp in the HU. That's what I've read in numerous stereo forums.
Old 01-16-2012, 08:25 PM
  #10  
markcz
Tech Contributor
 
markcz's Avatar
 
Member Since: May 2003
Location: North Augusta, SC
Posts: 7,032
Received 131 Likes on 113 Posts

Default It works!

I finally installed the booster that I've had for months, it works great

Before the install I could only get about 6 FM stations, now there are dozens that come in CLEARLY.

AM improvement isn't much, but FM is rare for me and AM is never, so I'm fine with it the way it is.



Old 01-18-2012, 12:39 PM
  #11  
Austin-vette
Instructor
 
Austin-vette's Avatar
 
Member Since: Sep 2006
Location: Austin Texas
Posts: 158
Received 2 Likes on 2 Posts
St. Jude Donor '08

Default

I also have the 9980 and before I installed the antenna amplifier FM reception was horrible, could barely get three stations and not very well at that. AM was also awful, but I don't listen to AM anyway. The antenna amplifier helped some but still crappy reception, the OEM radio had very good FM reception. So, I'm very interested in the pink wire solution, assuming there is only one pink wire in the car's radio harness, I can find it, any ideas on where or what color the five volt wire is?
Old 01-18-2012, 03:53 PM
  #12  
markcz
Tech Contributor
 
markcz's Avatar
 
Member Since: May 2003
Location: North Augusta, SC
Posts: 7,032
Received 131 Likes on 113 Posts

Default

Originally Posted by Austin-vette
I also have the 9980 and before I installed the antenna amplifier FM reception was horrible, could barely get three stations and not very well at that. AM was also awful, but I don't listen to AM anyway. The antenna amplifier helped some but still crappy reception, the OEM radio had very good FM reception. So, I'm very interested in the pink wire solution, assuming there is only one pink wire in the car's radio harness, I can find it, any ideas on where or what color the five volt wire is?
What year and model car?

What else (if anything) beside radio is aftermarket?
Old 01-18-2012, 04:20 PM
  #13  
1FUNC5
Le Mans Master
 
1FUNC5's Avatar
 
Member Since: Oct 2002
Location: Hoover, AL NCM Life Member #2438
Posts: 7,998
Received 49 Likes on 46 Posts

Default

dont understand why eveyone keeps blaming the particular head unit.... its not the radio! Yes it starts after replacing stock but will do this with ANY aftermarket replacement in a c6.
Old 01-18-2012, 04:46 PM
  #14  
okie08vette
Le Mans Master
 
okie08vette's Avatar
 
Member Since: Nov 2003
Location: Norman OK
Posts: 5,410
Received 52 Likes on 41 Posts

Default

Originally Posted by 1FUNC5
dont understand why eveyone keeps blaming the particular head unit.... its not the radio! Yes it starts after replacing stock but will do this with ANY aftermarket replacement in a c6.
My Pioneer Z120 has as good a radio reception as my stock unit did.
Old 01-18-2012, 06:40 PM
  #15  
1FUNC5
Le Mans Master
 
1FUNC5's Avatar
 
Member Since: Oct 2002
Location: Hoover, AL NCM Life Member #2438
Posts: 7,998
Received 49 Likes on 46 Posts

Default

I have seen where droptopgal had a z120 and she had reception trouble in her gs coupe
Old 01-19-2012, 02:02 PM
  #16  
Austin-vette
Instructor
 
Austin-vette's Avatar
 
Member Since: Sep 2006
Location: Austin Texas
Posts: 158
Received 2 Likes on 2 Posts
St. Jude Donor '08

Default

Originally Posted by markcz
What year and model car?

What else (if anything) beside radio is aftermarket?
Thanks Mark, it is a 2006 C6, coupe with JL Audio 300/2 and 500/1, JL stealthbox and JL 13.5 in a sealed box, MB Quart 6.5 separates in front, stock rear speakers, the amps are on a near vertical partition next to the front inside roof hold-downs, ton of engine and suspension mods. I'm getting desperate and even thinking of putting some other antenna somewhere inside the car but have no good ideas on this. All suggestions will be appreciated.
Old 01-19-2012, 05:29 PM
  #17  
markcz
Tech Contributor
 
markcz's Avatar
 
Member Since: May 2003
Location: North Augusta, SC
Posts: 7,032
Received 131 Likes on 113 Posts

Default

Originally Posted by Austin-vette
Thanks Mark, it is a 2006 C6, coupe with JL Audio 300/2 and 500/1, JL stealthbox and JL 13.5 in a sealed box, MB Quart 6.5 separates in front, stock rear speakers, the amps are on a near vertical partition next to the front inside roof hold-downs, ton of engine and suspension mods. I'm getting desperate and even thinking of putting some other antenna somewhere inside the car but have no good ideas on this. All suggestions will be appreciated.
C6 coupe has the stock antenna in the rear wall behind the trunk, there's a module that normally gets powered up by the oem radio. Connect your amp trigger or antenna trigger wire to the white wire at B3 of the big C1 plug that went into the original radio, that will power up the module, which is as good as it will get with that antenna and an aftermarket radio.

If that doesn't do it for you, I'd try one of these

Get notified of new replies

To Poor Radio Reception with New Kenwood 9980

Old 01-23-2012, 08:28 PM
  #18  
TrueBlueCoupe
Burning Brakes
 
TrueBlueCoupe's Avatar
 
Member Since: Dec 1999
Location: Richmond VA
Posts: 815
Likes: 0
Received 0 Likes on 0 Posts

Default

could someone at DD mods shed some light on the antenna issue? Just wondering if I should buy the booster or find some wire I can power up in the car to make the stock antenna work better?
Old 01-23-2012, 10:14 PM
  #19  
markcz
Tech Contributor
 
markcz's Avatar
 
Member Since: May 2003
Location: North Augusta, SC
Posts: 7,032
Received 131 Likes on 113 Posts

Default

There isn't any one magic fix for bad reception.

The booster works good enough for me, others have been happy with the window mount thing buried in the dash. You really just need to try something and see if it works
Old 01-24-2012, 11:23 AM
  #20  
Velox
Drifting
Support Corvetteforum!
 
Velox's Avatar
 
Member Since: Sep 1999
Location: Des Moines, Iowa, USA Iowa
Posts: 1,344
Received 106 Likes on 97 Posts

Default

Well I have a 2011 Bose 3LT and went through the entire Pioneer HU, amp, speakers, sub install routine, and ended up with horrid FM reception. Just 2 or 3 stations that would fade in and out just driving around the block. Yes I powered the stock antenna with 12V. Yes I tried with and without an antenna booster. Then I tried a new amplified ("hidden") antenna, worse. I would add then remove the 12V power to the hidden antenna and all that would do was increase the volume of static. I tried two other antennas, both windshield mount and hatch mount. I even tried a fixed mast antenna mounted transversely behind the rear tail light fascia. Minimal improvement but not enough to enjoy the radio. I read every post here on this problem and never found a solution. SO FWIW just letting you know my HU upgrade failed. I finally gave up and put the stock HU back in, bingo, huge number of AM and FM stations no problem. It sounded so crappy using an adapter harness with soldered in RCA connections to the amp that I gave up on that too. Finally I went back to all stock with just upgraded door and rear speakers and removed center speaker. It sounds fine and has good reception. What a disaster this project was.

Thread Tools
Search this Thread
Quick Reply: Poor Radio Reception with New Kenwood 9980



All times are GMT -4. The time now is 06:42 PM.