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MotoTRBO Demonstration

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OCO

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Sales guy has his technology wrong (listen around the 40 second mark). All I can hear different is possibly a better noise canceling mike.
 

JRayfield

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OCO

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John:
Didn't want to quibble, but the vocoder "filters out the background noise from the transmitting frequency" ?
The noise cancellation is impressive, but is it unique in the Mot line only to the TRBO units?

BTW - getting a 404 error on the second sample..
 

JRayfield

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That phrase is obviously from a salesperson. :)

Noise reduction is obviously done in DSP's and in 'code' working with the Vocoder.

It is unique to the MOTOTRBO and the APX line of equipment. The APX radios have even better background noise reduction, as compared to the MOTOTRBO. Some of the same engineers worked on both. I say that the APX is "MOTOTRBO on steroids", with reference to background noise reduction. It is important to use the IMPRES microphones with these radios, as those work with the software in the radios to achieve the results.

John Rayfield, Jr. CETma

John:
Didn't want to quibble, but the vocoder "filters out the background noise from the transmitting frequency" ?
The noise cancellation is impressive, but is it unique in the Mot line only to the TRBO units?

BTW - getting a 404 error on the second sample..
 

1234567890

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If you are referring to the AMBE+ vocoder, it is not unique in the APX and TRBO line. If you are talking about the technology of vocoding to eliminate background noise, well I think one could argue that's been around since the VSELP days. In any event, EFJ had AMBE+ before Motorola did, and to say that the ability to reduce noise in the vocoder is unique to any manufacturer is only correct when applied to DVSI......
 

JRayfield

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I never said that the vocoder is unique to Motorola MOTOTRBO or APX. The software implementation that Motorola uses is unique to them. And there are ways of achieving background noise reduction, using software, such that two manufacturers can use the exact same vocoder (such as the AMBE+2) and one will work 'better' than the other one, with regards to background noise.

And that doesn't mean that others have also developed background noise reduction 'code', but so far, I haven't heard any radio that works as well as a MOTOTRBO or APX radio, with regards to background noise. That's not to say that there won't be something that works even better than Motorola's products next week.....who knows, in this industry. Things change almost daily.

John Rayfield, Jr. CETma

If you are referring to the AMBE+ vocoder, it is not unique in the APX and TRBO line. If you are talking about the technology of vocoding to eliminate background noise, well I think one could argue that's been around since the VSELP days. In any event, EFJ had AMBE+ before Motorola did, and to say that the ability to reduce noise in the vocoder is unique to any manufacturer is only correct when applied to DVSI......
 

dxradio2003

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Mototrbo

Hi,

Don't get me wrong, I am sure the MOTOTRBO radio works really well and minimizes background noise (etc.), however, analog radios utilizing DSP audio filtering likely perform similarly.

Just not quite sold on digital radio yet, but it is getting better all the time.

---dxradio
 

JRayfield

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You say "likely" perform better? So, you haven't actually seen/heard an analog radio perform better than a MOTOTRBO radio? I haven't, and I've heard and seen a LOT of different radios, including ones in helicopters using very good noise cancelling headsets, and they don't even come close to MOTOTRBO.

When you find one that works even 'as good', let me know. I'd sure like to see/hear it.

John Rayfield, Jr. CETma

Hi,

Don't get me wrong, I am sure the MOTOTRBO radio works really well and minimizes background noise (etc.), however, analog radios utilizing DSP audio filtering likely perform similarly.

Just not quite sold on digital radio yet, but it is getting better all the time.

---dxradio
 

CyberGoth1440

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Wow, really sparked some debate with this. Anyway, what's the advantage of MotoTRBO over P25? Is it the AMBE vs IMBE Vocoder thing?
 

JRayfield

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You don't even know anything about me. How can you make a statement like that without knowing anything about who I am, what I do, etc.?

I completely agree that anyone should ask for demos of anything that they're considering purchasing.

John Rayfield, Jr. CETma

Again just realize that JRayfield is a large Motorola dealer, so take whatever he pushes with a grain of salt and ask for real word demo in your enviroment before choosing.
 

JRayfield

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First of all, there are two 'versions' of P25 - Phase 1 and Phase 2.

Phase 1 is 12.5 khz wide, single-talk-patch-per-channel, just like 12.5 khz narrowband analog, and it uses the IMBE vocoder (very old).

Phase 2 is TDMA, just like MOTOTRBO, which gives two 'virtual' channels in one 12.5 khz channel, and it uses the AMBE+2 vocoder, just like MOTOTRBO.

P25 Phase 2 is a vast improvement over P25 Phase 1, in my opinion.

I think that the 'advantages' of one over the other are going to depend somewhat upon the application. Although the AMBE+2 vocoder is definitely a lot better than the old IMBE vocoder.

John Rayfield, Jr. CETma

Wow, really sparked some debate with this. Anyway, what's the advantage of MotoTRBO over P25? Is it the AMBE vs IMBE Vocoder thing?
 

CyberGoth1440

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Hypothetically, if I were to buy a MotoTRBO handheld, would it be possible to program it myself to monitor a non-trunked VHF TRBO system? My County uses a large SmartZone 800Mhz TRS & I have seen Motorola XTS5000's for sale @ Hamfest's but I never saw the point since I know they will try to affiliate with the system but I would think this would not be an issue with a non-trunked system.
 

JRayfield

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Non-trunked MOTOTRBO radios do not have to 'affiliate' to any system, so that's not a problem with using one to monitor a system.

However, you would need to know the Color Code (only 16 Color Codes, so that's not too bad) and the Group ID (in conventional systems, there are over 16,000,000 possible Group ID's from which to choose). There is no 'open monitor' on a MOTOTRBO radio, such that the radio can monitor any ID, without that specific ID being programmed into the radio. That could make monitoring a system pretty tough, unless they just use the factory-default Group ID 1.

John Rayfield, Jr. CETma

Hypothetically, if I were to buy a MotoTRBO handheld, would it be possible to program it myself to monitor a non-trunked VHF TRBO system? My County uses a large SmartZone 800Mhz TRS & I have seen Motorola XTS5000's for sale @ Hamfest's but I never saw the point since I know they will try to affiliate with the system but I would think this would not be an issue with a non-trunked system.
 

scannerfreak

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Again just realize that JRayfield is a large Motorola dealer, so take whatever he pushes with a grain of salt and ask for real word demo in your enviroment before choosing.
He's not exaggerating in the least. I monitor a casino that just went from analog conventional to TRBO and the difference is truly amazing. On the analog you could clearly hear the noisy slot machines in the background which would often drown out the voice. With TRBO I hear absolutely nothing but digital voice.
 
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