UHF sound through the Stereo!

Submitted: Monday, May 02, 2005 at 21:08
ThreadID: 22589 Views:4439 Replies:7 FollowUps:11
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I’m looking at sending my TX3400 UHF Radio signal (The Sound Anyway) through my Stereo Speakers to act like an external speaker if that makes sense the idea I have is to plug in an FM Transmitter in the back of my TX3400 Like the ones that you get to play your iPod/MP3 player through the radio with and all you do is tune in one of your Spare Radio channels in to it and it will play through all your speakers. Is this a good idea or am I dreaming?? It would just take a little of the clutter out of the centre console and also make the UHF a little louder over the Sports Exhaust?

What do yous guys and girls recon?
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Reply By: Lone Wolf - Monday, May 02, 2005 at 21:13

Monday, May 02, 2005 at 21:13
I just bought the extension speaker for $19.00.

If you're going to use an FM transmitter, you will have to have some resistance in series, or you'll kill it.

Wolfie
AnswerID: 109306

Follow Up By: Matt (W.A.) - Monday, May 02, 2005 at 21:20

Monday, May 02, 2005 at 21:20
Hi Wolfie,
What will I kill the FM Transmitter or the radio and do you think its worth the effort and most importantly will it work?

Oh and how would I go about the resistance in series bit?

Thanks in Advance

Matt
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FollowupID: 365958

Follow Up By: Lone Wolf - Monday, May 02, 2005 at 21:24

Monday, May 02, 2005 at 21:24
You will kill the little transmitter.

The transmitter only require a small amount of audio power, which is all that's available in most MP3 players and the like.

The 3400 output jack, is amplified sound, so you will need to reduce it's power.

I am sure there are many here, that can perhaps inform you on the resitance value required.

Wolfie
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FollowupID: 365960

Follow Up By: Matt (W.A.) - Monday, May 02, 2005 at 21:25

Monday, May 02, 2005 at 21:25
P.S. Wolfie
What's the difference between this set up and the iTrip setup i have?
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FollowupID: 365961

Follow Up By: Matt (W.A.) - Monday, May 02, 2005 at 21:27

Monday, May 02, 2005 at 21:27
Cheers Wolfie,
Disregard that last followup i sent you...........

Matt
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FollowupID: 365962

Reply By: Wilgadene - Monday, May 02, 2005 at 21:17

Monday, May 02, 2005 at 21:17
Sounds good Matt. We have one of the Mp3 adapters ($79 from Auto Barn) and it works really well. just plug in a memory stick/flash dish thingo and play music to your hearts content. I have no idea how to achieve this with a UHF but it seems anything is possible with electronics. I haven't got a UHF yet but intend to in the future and will be interested to see how you get on.

Kev
Bundy Qld
AnswerID: 109307

Follow Up By: Matt (W.A.) - Monday, May 02, 2005 at 21:22

Monday, May 02, 2005 at 21:22
Cheers Kev
I'll let you know, I have the Gadget Guru on the Case (Wolfie)......

Matt
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FollowupID: 365959

Reply By: Matt (W.A.) - Monday, May 02, 2005 at 21:27

Monday, May 02, 2005 at 21:27
Cheers Wolfie,
Disregard that last followup i sent you...........

Matt
AnswerID: 109310

Reply By: Mad Dog (Australia) - Monday, May 02, 2005 at 21:28

Monday, May 02, 2005 at 21:28
You can use an FM modulator of either the wired or wireless variety, not a problem...just do it.
AnswerID: 109311

Follow Up By: Matt (W.A.) - Monday, May 02, 2005 at 21:32

Monday, May 02, 2005 at 21:32
Mad Dog,
So it will work then? My Idea isn't a Hairbrain one? like all the rest usually are?
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FollowupID: 365963

Follow Up By: Mad Dog (Australia) - Monday, May 02, 2005 at 22:06

Monday, May 02, 2005 at 22:06
Yep not a problem, I've done the same in the past with small FM transmitters and used to use one for putting the kids DVD audio through the radio. As Wolfie says don't overdrive it, keep the cb audio down low and adjust the volume with the car radio. I don't know about those ipod and mp3 ones though. I picked mine up through ebay and an FM modulator that does the same trick but has to be hard wired can be had from most car audio shops.
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FollowupID: 365972

Follow Up By: Matt (W.A.) - Monday, May 02, 2005 at 22:35

Monday, May 02, 2005 at 22:35
Cheers Mad Dog,
I'll check out Jaycar's Website now.
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FollowupID: 365984

Follow Up By: Truckster (Vic) - Tuesday, May 03, 2005 at 12:00

Tuesday, May 03, 2005 at 12:00
I cant see why you would want to...
whats wrong with a $20 extension speaker? If your that deaf, go the VOX kit which has head phones
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FollowupID: 366044

Reply By: Michael Carey - Tuesday, May 03, 2005 at 07:35

Tuesday, May 03, 2005 at 07:35
This is totally do-able. BUT, bear in mind that while you are listening to something on the stereo, other than the UHF, you won't be able to hear ANY calls that come in.
Plus if you have the UHF wired so you can switch it on independant of the ignition, you will also have to have the keys in and turned to accessories to use the UHF.
In theory it's a good idea due to the superior sound quality you will get through the stereo speakers, just remember the short falls with the system...
Regards,
Michael.
AnswerID: 109381

Follow Up By: Matt (W.A.) - Tuesday, May 03, 2005 at 08:16

Tuesday, May 03, 2005 at 08:16
Thanks Michael,
I didn't factor in the Accessorie thing! I have the UHF Indipendantly Wired to turn on without the keys like you said so having the keys in to listen to the UHF could be a downer? but i don't do that too often so I'll try to figure out a work around.

Thanks for the reply.

Matt
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FollowupID: 366007

Follow Up By: Member - Jeff M (WA) - Tuesday, May 03, 2005 at 11:57

Tuesday, May 03, 2005 at 11:57
I agree with Michael. It will work no problems, even without a line leveler (you just have to make sure the volume is turned right down on the UHF yourself).
I quite often have the stereo playing (even if it's only soft background music) while 4bying, but we use the UHF's just as much on the highway in convoy and I don't think I'd like to completly isolate myself from being able to listen to music while travelling!!

Have you thought about hooking the UHF through the phone hand's free input on the back of the stereo? I'm not sure how it would work in the Paj?? Any auto sparkys out there? Would'nt the stereo just mute and transfer over to the UHF when there is Line voltage detected??

Now that would be cool. :-) Auto muting when UHF squelch is broken and nice clear sound through the stereo...
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FollowupID: 366042

Reply By: BenSpoon - Tuesday, May 03, 2005 at 10:18

Tuesday, May 03, 2005 at 10:18
As wolfie mentioned, the line out on the UHF is amped- grab a line level reducer (about $20) from a car audio store to bring the level for the transmitter to a "pre-amp" level- they generally only come with bare wires, so some heatshrink and soldering in 3.5mm mono headphone jacks will solve it. Another option is a jaycar kit- I know they do pre-amp kits for stage stuff, so they may be able to help you out.

Not sure if you have experienced it, but I have come across interference in the UHF and AM CBs when the FM transmitter is pumping out alot of signal, especially bass. It has been enough to cause the CBs to come off scan and sit on a channel with a crackle going to the sound of a bass guitar. Possibly a chance of feedback when you have it running, depending on the distances between transmitter and aerial.

Id recommend the external speaker still- much better clarity at a higher volume. The only drama is finding somewhere to mount the thing.

AnswerID: 109414

Reply By: Matt (W.A.) - Tuesday, May 03, 2005 at 23:09

Tuesday, May 03, 2005 at 23:09
Thanks everyone for your input its given me a lot to think about for and against the idea.
I think i'll give it a try and see how it turns out just for something too do!

I'll post my results after I get it sorted out.

Matt
AnswerID: 109547

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