MTR3000 or DR3000, what is the difference?


Other than price, the difference between the MTR3000 and DR3000 is sometimes not that obvious.

The MTR3000 has built-in wireline (TRC) support whereas the DR3000 would require an external tone remote adapter. This makes the MTR3000 well suited for legacy analogue applications where tone remote or DC remote control are needed.

The MTR3000 can be ordered in a multitude of possible configurations whereas the DR3000 cannot. This means that the MTR3000 can be used in niche applications where only a bespoke repeater would be suited.

The MTR3000 has an input for an external reference oscillator whereas the DR3000 can only run off the internal oscillators. The external oscillator can be devired from a (oven-controlled) high-stability oscillator; GPS receiver or atomic clock (i.e. Rubidium or Caesium standard) increasing the standard 0,5ppm stability to the order of 5ppb.

There are also differences in the specifications: I have takes the specification sheets of both repeaters, and put them side-by-side. I have highlighted where there are differences and whether this difference is an advantage or not.

ParameterDR3000MTR3000
Channel Capacity1616
TX Power - Low Power Models1 to 25WNone
TX Power - High Power Models25 to 40W8 to 100W
VHF Frequency Band136-174 MHz136-174 MHz
UHF1 Frequency Band403-470 MHz403-470 MHz
UHF2 Frequency Band450-527 MHz470-524 MHz
Dimensions (HxWxL)132,6 x 482,6 x 296,5 mm (4U)133 x 483 x 419 mm (4U)
Weight14kg19kg
Voltage Requirements AC100-240VAC85 to 264 VAC
Voltage Requirements DC13,6VDC28,6VDC
Standby Current Drain AC0,5A0,4A
Standby Current Drain DC1A0,8A
Transmit Current Drain AC (Full Power)1,5A
Transmit Current Drain AC (Full Power)4A1,9A
Transmit Current Drain DC (Full Power)7,5A
Transmit Current Drain DC (Full Power)12A12,2A
Operating Temperature Range-30°C to +60°C-30°C to +60°C
Maximum Duty Cycle (Full Power)100%100%
Analogue Channel Spacing12,5; 20 or 25 kHz12,5; 20 or 25 kHz
Digital Channel Spacing12,5kHz12,5kHz
Frequency Stability0,5ppm0,5ppm
Analogue Sensitivity (12dB SINAD)0,22µV0,22µV
Digital Sensitivity (5% BER)0,3µV0,3µV
Intermodulation70 dB95dB
Adjacent Channel Selectivity 12,5kHz60dB75dB
Adjacent Channel Selectivity 20/25kHz70dB80dB
Spurious Rejection70dB85dB
Audio Distortion at Rated Audio (typical)3%3%
Hum and Noise 12,5kHz-40 dB-45dB
Hum and Noise 20/25kHz-45dB-50dB
Audio Response+1dB/-3 dB+1dB/-3 dB
Conducted Spurious Emission >1GHz-57 dBm-65 dBm
Modulation Limiting 12,5kHz2,5 kHz2,5 kHz
Modulation Limiting 20kHz4 kHz4 kHz
Modulation Limiting 25kHz5kHz5kHz
Conducted / Radiated Emission >1GHz-36 dBm-36 dBm
Conducted / Radiated Emission <1GHz-30 dBm-30 dBm
Adjacent Channel Power 12,5kHz-60dB-70dB
Adjacent Channel Power 20/25kHz-70 dB-75 dB
Audio Distortion3%3%
Digital Vocoder TypeAMBE+2AMBE+2
Digital ProtocolETSI-TS 102 361-1, 2 & 3ETSI-TS 102 361-1, 2 & 3
Advantage
Difference (no advantage)
Disadvantage

Is Motorola exiting analogue?


The answer is simple: No.

The recent announcements that Motorola will be discontinuing the extremely popular Professional and Commercial Series analogue radios has raised a few questions as to Motorola's strategy regarding analogue. It is true that in a few months, Motorola will only be producing one licensed* analogue only portable radio model range but almost all** the current MOTOTRBO models are able to operate in analogue mode.

Even if customers have no plans to migrate to digital, they can still use their MOTOTRBO radios, in analogue mode and enjoy all the benefits a Motorola radio brings. Customers who may be considering digital in the future can continue to use their MOTOTRBO and legacy analogue radios and can make the switch to digital at some date in the future.

Using features like Dynamic Mixed Mode and Dual Capacity Direct Mode, customers with mixed fleets of radios can enjoy the enhanced capabilities of MOTOTRBO while still using their legacy analogue radios on the same channel at the same time***.

Apart from that, Motorola's Astro product portfolio supports analogue operation and it is possible to link a Dimetra system into an analogue channel. MOTOTRBO radios are also able to operate on MPT1327 and SmartZone systems.



* Licensed means a radio which does not operate in the licence free 446MHz band. Motorola produces a range of consumer and business radios which operate in this band and hence do not require a radio licence.
** Only the SL4000 series does not support analogue operation - all other MOTOTRBO radios do.
*** IP Site Connect; Capacity Plus and Linked Capacity Plus operation are not supported in analogue mode. A call in digital mode will not be audible to analogue users who are on the same frequency. A cross patch system can be used to link an analogue channel to a digital one.


New firmware and CPS

Budapest, the capital of Hungary [Pasztilla aka Attila Terbócs (Own work CC-BY SA 3.0 source:Wikimedia Commons)]

This week, Motorola introduced system release R2.3B. Included in this release are firmware packages R02.30.31 for the DP/DM4000/2000/3441 series;  R02.30.13 for the SL4000 series and R01.00.30 for the DP/DM1000 series. For this release a new version of CPS (10.7); Radio Management (1.7) and Tuner (10.9) has been introduced.

There are a few enhancements in this release, which include an Input Method Editor support for Hungarian (hence the reason for the picture).

There is also an improvement to the Enhanced Codeplug Password Protection. The Read/Write codeplug password protection option is now being removed in this release as it presented some problems when programming large fleets of radios. The Read Only codeplug password protection remains unaffected. (Note that this may not apply to models sold in the Americas).

The Enhanced Codeplug Password feature in R2.3A prevented the radio password from being retrieved by means of packet sniffing. The entered password is verified by the radio rather than the CPS. This enhancement is also available in R01.12.13 (see below).

Further details can be found in the R2.3B release notes.

For the DP/DM3000 series, firmware R01.12.13 is now available with some minor fixes - details of which can be found in the release notes.

Where can I download the MOTOTRBO CPS?

The Customer Programming Software required to configure a MOTOTRBO radio is only available to Motorola Channel Partners, who in terms of their agreement with Motorola Solutions, have access to Motorola Online. This is the case for all customers in Europe and Africa.

I understand that in the USA and Canada, it is possible for end-customers to gain access to Motorola Online by purchasing a software subscription licence - this is not available in Europe and Africa. I don't know about Latin America or Asia.

End customers in Europe and Africa can obtain the CPS from the same source as their radios. The radio supplier can, as a service, provide periodic updates for purchased CPS via their website or via Motorola Online. If you need to get the CPS and, for whatever reason, are unable to contact the company who supplied you the radios, then please click here.

If you came here via a Google search, I'm sorry to disappoint you, but it is not possible to download the CPS from this site. Please click here to obtain a legal copy.