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FM Signal Amplifier

Signal booster for problem reception areas

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  • FM Signal Amplifier

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Want to hear that distant radio station a little bit better? Here's a signal amplifier that will help, boosting FM signals by 15dB. This signal amplifier plugs in between your antenna lead and your radio. It is switchable on/off. Warranty: 30 days.

Note: Antenna boosters can improve reception of a distant station, but they work best in relatively flat country with few obstructions. They are not effective with interference caused by mountains or large buildings.

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Note: Most vehicles will require additional installation parts — please identify your vehicle if you haven’t done so, then check here for a list of parts. You can also call an Advisor for more information.

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What's in the box?

Download owner's manual

  • FM signal amplifier with attached 29" power wire and 26" antenna cable with male Motorola plug
  • Mounting bracket
  • Instruction sheet
  • 3 mounting screws; Note: Antenna adapters and/or DIN removal tools are required for some vehicles!

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Features

FM Gain: When the booster is on, the FM signal is increased by 15dB.

Installation: In-dash installation requires cutting a 1.5" x 0.815" hole (if the included bezel isn't used), or a 1.995" x 1" cutout (if the included black trim bezel is used). The booster can be mounted under your vehicle's dash using the supplied bracket and bezel.

On/Off: On the front panel of the booster, there is an the on/off switch. A red LED comes on when the booster is on, and you can by-pass the signal amp when desired by turning it off.

Tuning Adjustment: The instructions mention an AM antenna trimmer adjustment. The AM trim adjustment is something done on your radio, the booster does not have a trim adjustment. Note that trim adjustment does not apply to digital radios

 
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FM Signal Amplifier Reviews

Average Customer Review:

26 people say:

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4 out of 5

works well

Written By bakerstrike, newton, nc on Tuesday, July 22, 2014
Crutchfield Customer Review (What's this?)
 
I hooked it up in my 98 eclipse and it worked better than I expected. Actually when I had it of but still hooked up it seem to work alot better.
Pros:
Clearer and stronger signal. cheap
Cons:
Bulky and if you want to mount it any where you need room and an antenna cable extender
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5 out of 5

FM Signal Amplifier

Written By NomadPar, Missouri on Wednesday, June 25, 2014
Crutchfield Customer Review (What's this?)
 
Boost the FM signal to a useable level.
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2 out of 5

Used for testing a bad FM tuner head

Written By Wes, Rockville, Va on Saturday, May 24, 2014
Crutchfield Customer Review (What's this?)
 
I had purchased a Kenwood KDC-BT955HD in March 2013. End of April 2014 FM tuner section picked up less stations (AM was OK and I put an older head which FM HD worked OK). (Note I"m an RF broadcast engineer ) EX: I live 15 miles from an WCVE transmitter and usually get instant HD digital lock. I did a road test and got a HD Digital lock 2.5 miles from the transmitter. I was trying to troubleshoot if problem was the front end of the tuner or the AGC. Amp overloaded the front end to the point I couldn't pick up even the local stations. So I sent the Head to Kenwood for repairs. This test only validated my assumption to Kenwood that I was not just an average Joe in troubleshooting the problem.
Pros:
Only cost me $23 to do a troubleshooting test. May have some use in the future for it for another application such as feeding multiple FM tuners in a house with the preamp close the antenna and before the splitter. It also may be useful if you live in a very rural area. If you live in a metro area with many FM stations already, the preamp will overload.
Cons:
Since most tuners are sensitive to pick up most stations (we no longer live in the 1970's folks) most people do NOT need a pre-amp such as this. If you DO NOT know what you are doing, don't purchase it if you think you can get better reception with a tuner manufactured since the 80's OR you can use it IF you have a long down-lead between the antenna and the head unit (but really who has land yachts these days) or you plan to feed multiple tuners with the pre-amp before an 8 way splitter.
1 out of 4 people found this helpful
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1 out of 5

Fm signal amplifier and adapters

Written By Mark K., In Maui on vacation on Thursday, April 24, 2014
Crutchfield Customer Review (What's this?)
 
Live in the mountains of Colorado. Our radio station reception is horrible. You can see the tower and lose the station. Trying to pick up some station better. Lose them going into certain neighborhoods for work. Now the local stations overpower the one further away. Need to remove and go back to stock. Listening to iheart radio on my iPhone instead
Pros:
As always adapters and tool made install a breeze
Cons:
Does not work for fm signals in the mountains. Need to talk to Crutchfield and return product
1 out of 2 people found this helpful
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3 out of 5

FM Signal Amplifier

Written By fishingfox, Phoenix, AZ on Monday, March 17, 2014
Crutchfield Customer Review (What's this?)
 
I bought this because my HD radio fades in some areas of the valley. It does help, but not as much as I had hoped.
Pros:
Price, ease of install
Cons:
Not as effective as I had hoped.
1 out of 1 people found this helpful
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2 out of 5

Not Impressed

Written By Minnesota Lurch, North Branch, MN on Friday, October 25, 2013
Crutchfield Customer Review (What's this?)
 
Not what I was expecting. I was trying to reduce dropouts I get with some of the weaker HD signals. Improvement is marginal at best. If I paid full price out of pocket, I'd have been a lot more disappointed. Fortunately I had a Crutchfield gift card to cover the majority of this purchase.
Pros:
Marginal signal improvement. Installation is a no-brainer.
Cons:
Doesn't provide the signal improvement claimed in description. Seems kind of flimsy too. Not worth the money.
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1 out of 5

Don't buy

Written By Clark, Gatlinburg, TN on Wednesday, October 16, 2013
 
Hooked it up and saw no change. The hassle and cost of shipping it back was more than the effort, so its in a box in my garage with other useless electronics.
Pros:
None
Cons:
Waste of money.
1 out of 2 people found this helpful
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4 out of 5

FM Signal Amplifier

Written By 800-10x, Illinois on Thursday, October 03, 2013
Crutchfield Customer Review (What's this?)
 
Works as advertised as long as one follows instructions.
Pros:
Works
Cons:
None
2 out of 3 people found this helpful
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1 out of 5

FM Signal Amplifier

Written By Ben, Sacramento on Thursday, June 13, 2013
Crutchfield Customer Review (What's this?)
 
Made no difference in reception at all
Crutchfield response on Monday, June 17, 2013
We forwarded this review to our Technical Support team for follow-up. Lifetime tech support comes with every Crutchfield purchase.
6 out of 6 people found this helpful
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4 out of 5

Workes very well

Written By Jimmy, Florida on Sunday, November 25, 2012
Crutchfield Customer Review (What's this?)
 
I installed this antenna booster in my daughter's car, she already has an aftermarket CD/USB deck but was having trouble receiving weaker FM signals. She lives up in the foothills of the Appalachians and sometimes FM reception can be poor when driving. At first I did not know whether the booster would really help or not, but my daughter tells me her FM radio reception is a lot better and seems to be stronger now. I would say try the booster if you are having similar reception problems, it may help.
Pros:
It worked and actually did improve the FM reception.
Cons:
The plastic housing around the on-off button is kind of flimsy and it can bind up making it harder to turn the booster on or off. This is the only reason I rate the booster at 4 out of 5 stars.
11 out of 12 people found this helpful
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1 out of 5

FM Signal Amplifier

Written By Robbie, Orlando, Florida on Monday, June 18, 2012
Crutchfield Customer Review (What's this?)
 
I would not reccomend this signal booster. not only does it fall apart it does not boost the signal at all....
Pros:
Easy to install
Cons:
Dont work at all poor construction it falls apart and the spring pops out on the switch
10 out of 10 people found this helpful
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1 out of 5

FM Signal Amplifier

Written By Anonymous, AZ on Saturday, May 19, 2012
Crutchfield Customer Review (What's this?)
 
Barely boosted the signal and the power button on all 4 I purchased . It was getting stuck.Poorly constructed .
Crutchfield response on Monday, May 21, 2012
We forwarded this review to our Technical Support team for follow-up. Lifetime tech support comes with every Crutchfield purchase.
8 out of 8 people found this helpful
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5 out of 5

FM Signal Amplifier

Written By Anonymous, New Mexico on Sunday, May 13, 2012
Crutchfield Customer Review (What's this?)
 
I am using your products in a very remote mountain location. This RF amplifier helps me to obtain good quality signal reception to more stations than I could otherwise. Very good product for the use that I am implementing it for

3 out of 4 people found this helpful
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1 out of 5

FM Signal Amplifier

Written By Josh, WV on Sunday, January 16, 2011
 
I would have rated this a 0 but they don't give you that option. Bought an aftermarket radio with sub-par FM radio signal. Crutchfield sent this out to me to try to amplify the signal. IT MADE THINGS WORSE! I didn't do a hard install (thankfully!) because I wanted to see how well it worked first. Plugged in and turned on, fm quality on stations near by did not increase, only the sound level increased. Stations further away that I used to be able to hear in my original radio come in now with lots of static on the aftermarket radio; once the amplifier is turned on they go away completely! But at least I can hear the static loud and clear!!
17 out of 18 people found this helpful
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1 out of 5

Save Your Money

Written By Bob N, Havre, MT on Saturday, October 16, 2010
Crutchfield Customer Review (What's this?)
 
After an hour's worth of work installing the unit, found out it made absolutely NO appreciable DIFFERENCE in increasing FM reception. In an area with only a half dozen FM stations, there was no improvement. With the booster 'off', when signal strength begins to fade, switching the booster 'on' only increases the static level. The construction quality is also to be questioned: On receipt the front panel decal was applied upside down, not allowing the on/off to shine through and, the on/off switch mechanism sticks badly impairing turning the unit on or off ... which is off little consequence now since I leave it off !! I would take it out but another hour underneath the dash is not worth the $15 effort. The laws of radio wave propogation cannot be enhanced with this booster - - Save your money and hope that you'll soon be driving into any area with better 'natural' reception!
19 out of 21 people found this helpful
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1 out of 5

HD reception

Written By Anonymous, Clinton, WA on Wednesday, November 25, 2009
Crutchfield Customer Review (What's this?)
 
I have installed a DUAL HD car radio in my off-the-grid home. It locks into the HD signal
on three of the four FM stations of interest just fine. The forth station switches in and out
of HD, holding pretty steady under ideal atmospheric conditions or when one stands in
just the right place relative to our in-house antenna.
I installed one of these amplifiers to get a slightly stronger signal (all I need). In "turned
off" (bypass mode) there seemed to be a slight degradation in reception, turned "on"
there was no improvement.
It didn't work for me.
20 out of 22 people found this helpful
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1 out of 5

FM Signal Amplifier

Written By Derek, Seattle, WA on Monday, June 08, 2009
Crutchfield Customer Review (What's this?)
 
This was a complete waste of money. I hooked up power plugged the car antenna into it and then the boosters antenna into the radio. Turned it on and FM stations came in worse with more static. Unplugged it put the car antenna directly into the radio and the reception was much clearer. Forget AM reception because with it on not one AM station could be heard. Turn it off and reception returned. So it's a complete waste on money in my opinion.
22 out of 25 people found this helpful
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1 out of 5

FM Signal Amplifier

Written By Alex, Illinois on Friday, September 26, 2008
 
It didnt help with my radio reception in my car at all!
16 out of 19 people found this helpful
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1 out of 5

FM Signal Amplifier

Written By Manuel, San Antonio, TX on Tuesday, May 06, 2008
 
I tried this product and all I heard was noise when I powered it up. The idea seems good, but the design is poor.
12 out of 13 people found this helpful
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1 out of 5

Not a good design

Written By Dr. Ace, near Bloomington, IN on Monday, October 15, 2007
Crutchfield Customer Review (What's this?)
 
I would have liked to rate this unit a ZERO. I ordered the unit (I won't call it a signal booster/amplifier) on 9-20-2007. I began formally studying radio/electronics in 1975. I earned a college degree in electronics and have held the highest class FCC issued Amateur Radio license for over 10 years. And have been licensed for about 25 years. I have used some very good signal amplifier/boosters, But this is NOT one of them! I live in a quiet rural area 10 miles outside Bloomington, IN. I conducted multiple tests with this unit. On hilltops and in valleys with many different radio stations, with the cars engine running and with the cars engine off, on AM and FM bands. No detectable difference of any kind switching the unit on/off on FM. On the AM broadcast band I tuned in a station with the signal amplifier/booster off, then I turned the signal amplifier/booster on; at that point I totally lost the AM station and all I had was NOISE !

98 out of 104 people found this helpful
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5 out of 5

Great product- not a miracle cure

Written By bass-bumper94, Fargo, ND on Sunday, June 24, 2007
Crutchfield Customer Review (What's this?)
 
This is a very good product. I agree with those who say that this is not a miracle cure for bad reception and dont expect to be picking up stations from a few states away. This is simply way to bring up the power of a few weak stations. Since you can turn it on and off, it wont degrade your signal once you install it which was a deciding factor for my purchase. Works great and sounds great. I would recommend this product to anyone. Really nicely designed with a good looking bezel. Great for any cars interior.
16 out of 24 people found this helpful
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5 out of 5

Great Product When used and reviewed correctly

Written By Jeremy, Chouteau, OK on Sunday, January 07, 2007
 
This product is a very simple signal amplifier, not a signal processor. It amplifies the incoming signal by 15Db, it does not reduce extra noise, or cut out static, or improve signal quality, only signal strength.

This is a great product if you know what it really is and don't believe that it is a "magic box" that will solve all your static problems.
37 out of 41 people found this helpful
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4 out of 5

Works Exceptionally well with a static filter inline with it

Written By Chris, CA on Thursday, December 08, 2005
Crutchfield Customer Review (What's this?)
 
Just cruising through the site, I stumbled on a product I put in my Fiance's Mustang a few years back. We live in the High Desert of Southern California so we definately have lots of flat open space. I used the amplifier with a static filter and the sound was absolutely amazing, at the time it was the best radio sound I have ever heard. Then I could only listen to CD's because I hated radio quality. Now I can actually listen to Am/Fm in the Mustang. It came close to cd quality on many stations. With the static filter and amplifier, the combo could not be beat.
55 out of 58 people found this helpful
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1 out of 5

FM Signal Amplifier

Written By Kenny, Jackson, TN on Saturday, August 13, 2005
Crutchfield Customer Review (What's this?)
 
Like the other reviews, this thing is garbage! It just added more static & the signal didn't improve at all. If your make of vehicle requires antenna cable adapters for installation on your vehicle, then you will spend more on them than the item itself.
35 out of 44 people found this helpful
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1 out of 5

FM Signal Amplifier

Written By Brian, Warren Michigan on Friday, June 17, 2005
Crutchfield Customer Review (What's this?)
 
it doesn't work just makes the static come in better
51 out of 63 people found this helpful
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1 out of 5

FM Signal Amplifier

Written By Kevin, GA on Tuesday, May 24, 2005
Crutchfield Customer Review (What's this?)
 
This item was garbage for me. It boosted the signal alright. Right along with the static I was getting. Maybe it was cause of the radio I don't know, but it was useless to me.
127 out of 158 people found this helpful
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1 question already asked

I have a bose radio and need to get better reception.I already have an antenna booster on the radio but the station still has stactic.Do you think this will help? [ Eddinger  Feb 23, 2014 ]
6 answers
  • It might, I have had some luck with the amplifier. It isn't a plug in and go setup it does require some tuning. Which may be the reason I'm not able to tell u it's great. If you're not in love with the Bose I would upgrade the receiver to a better unit rather than fool with the amplifier. [ KEVIN   Feb 24, 2014 ]
  • Thank you [ Eddinger   Feb 24, 2014 ]
  • I doubt that it will help. I found that it wall only a little better with it on. [ GARY   Feb 24, 2014 ]
  • I tried this signal amplifier as an attempt to get better signal performance from a new Power antenna. The improvement is marginal. I do not think it is worth the time and effort. I would first look at the grounding situation of your antenna. In my experience as an installer of over 30 years I have found that the two primary reasons for poor signal are: 1.) bad ground at the antenna. 2.) Inferior tuner in the radio. Bose Products are generally pretty good, so my bet is that the antenna is your best option to solve the problem. Another question is: Is this a power antenna? If so and you really want better performance from your radio I would recommend replacing it with a good simple stick antenna. That is ultimately what I did. You can perform a simple test before doing the installation by mounting another antenna to a block of steel or other highly conductive metal, then plug that into the back of your radio. If you see a dramatic increase in signal and clarity, voila you have identified your problem. I would bet you money that this will go much further toward solving your problem. [ DAVID J   Feb 24, 2014 ]
  • Unfortunately, this probably wouldn't help. If you're already using a booster and the results aren't satisfactory, this device would probably only make the station as well as the static louder. [ John   Feb 24, 2014 ]
  • I got this amplifier, but it didn't really help much with the static even though I am in LA... I'm going to get a new stereo with more FM power. [ GERALD   Feb 24, 2014 ]

For a more in-depth review and enhanced detailed information on the FM Signal Amplifier, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_12044UA60/FM-Signal-Amplifier.html ).

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