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Retevis 900MHz


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The MOQ is 200 units.  MOQ = Minimum Order Quantity.  I don't think many people are willing to spend $12k for 200 of them.

 

From studying the Retevis specs and given that I own a small fleet of Motorola DTR650 and a small fleet of DTR700 radios and are very familiar with them including their specs, I can only conclude that the Retevis 900MHz model is VAPORWARE.  Many of Retevis' specs are for conventional analog and DMR radios and are N/A for a 900MHz FHSS digital radio.  The specs appear to be a copy/paste from multiple sources, including from some of Motorola's marketing literature for the DTRs.  I have yet to find an FCC ID for the Retevis model.  Epic FAIL, IMHO.

 

Motorola is very tight lipped about the DTRs and I highly doubt Motorola has opened the protocol up to the world.  Maybe Retevis has one in the works as a reverse engineered version of Motorola's DTR radios or maybe Retevis has done their own thing to try to compete with the DTRs.

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Interesting.  This link shows a different radio, with the 200 MOQ:

https://www.retevis.com/Retevis-900MHz-License-Free-Two-Way-Radio/

 

This radio caught my attention given that I'm a DTR radio owner and use them a LOT.  The DTRs are my professional quality digital replacement for GMRS/FRS and MURS for local on-site simplex type use with family and friends.  My wife loves using them too when we are out shopping or doing whatever.  The Motorola DTRs work amazingly well and are capable of outperforming conventional UHF Part 90/95 portables on simplex.  They totally blow FRS away.  Being all digital and completely scanner proof comes as a bonus.

 

Rich, as a side note, is this 900MHz ISM forum a new forum just created on the site?  If so, GREAT!

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Used DTR's seem pretty tough to come by at a cheap price. At least, in the Ebay world. They certainly do seem to have a following. I've traded in a few from Construction and Quarry sites where guys bought them without realizing that they couldn't talk to existing conventional VHF/UHF Digital radios they already had. Similar to Retevis' advertising people, they had confused DMR Digital with FHSS 900 MHz Digital.

 

FHSS is neat stuff when they're picking out usable signals from low, low down into the weeds of the noise floor - all while hopping around at 100+ times per second, and avoiding interference on the fly.

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Thank scorpion1200, he asked me to add it. It's a great idea, I love the DTR/DLR radios and interested in anything fresh in the 900 MHz realm.

 

It IS a great idea!  The Retevis 900MHz models caught my attention because I'm a DTR owner and have also owned DLRs too.

 

The DTRs spend 90ms on each frequency in the hopset, or about 11 hops per second.

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Question to owners, out of curiosity, how do you program DTR? And DLR? Do you even program them? Or is there a feature when you "pair" them somehow? Or any DTR/DLR will work with any other?

 

No programming is needed to use the DTRs and DLRs with each other right out of the box at the factory default settings.   Customization of features and settings requires the Motorola Business Radio CPS and is a free download from Motorola.  Some features and settings on each model can be changed without requiring the CPS.  The CPS cable is around $35 on Amazon.  The same CPS and cable programs all of Motorola's business radios (RDV/RDU series, RM series, RMM series, etc.).  The one exception is the legacy DTR410/550/650 models use a different CPS cable.  You can download and install the CPS and play around with it and explore the DTR/DLR features and settings.  The latest version of the CPS is R08.02 and programs all of the older models.  You don't need a particular version of the CPS to program an older radio.  Just use the latest CPS version.

 

The Motorola Business Radio CPS can be downloaded from here:

https://www.motorolasolutions.com/en_us/products/two-way-radios/commercial-business-two-way-radio-systems/on-site-business-radios/dtr-series/dtr700.html#tabresource

 

There is no "pairing" of DTRs/DLRs like there is with Bluetooth devices.  They pair up with each other on the fly with each PTT press.  They do have to first be on the same frequency hopset and talkgroup ID in order to work with each other.  A transmitting DTR/DLR listens for an acknowledgement from a receiving DTR/DLR radio during the NEXTEL-like PTT "chirp" talk permit tone to sync up to allow transmission to continue.  When in range, transmission simply continues.  When out of range, transmission stops after the PTT chirp and emits a warning beep indicating the call failed.  The beep is a soft "do-do-doot" sound on the DLRs and DTR600/700.  A DTR600/700 will also display a Call Failed message.  The legacy DTR410/550/650 models will scream at you like an old NEXTEL phone and display a User not Available message.  The end result is you will always know that you are in range and your transmission was heard and acknowledged by another radio.  This makes it easy for range testing because you don't need two people for "Can you hear me now?" testing.  You can leave one radio on the dining room table at home and then take the other radio with you and go for a drive and press PTT to see where you get connect hits.

 

I have found people tend to use these radios right out of the box at the factory default settings, like FRS bubble packs.  I have customized the programming in my DTRs but I purposely kept the factory default public talkgroups in my programming to listen to and talk to defaulted radios.  I have private groups in my programming to keep my DTRs private when I want that.  I have monitored activity on the default public groups in my travels when passing through major retail areas.  The local Costco Wholesale near me uses DLR radios at the factory defaults and I can hear them when I'm in range.

 

They are amazing radios.

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Thanks! That helps. So, the frequency hopset and talkgroup ID is similar to the tone squelch on analog FM, do I understand that correctly? And any DTR and DLR radio that programmed to the same hopset and talkgroup can talk to each other? And when I see something like "DLR1060 6-channel" it means that it is possible to program 6 talkgroups and chose between them?

 

If the communications need is very simple: two or three radios that can talk to each other, without the need to talk to strangers on default talkgroups, then 2-channel should suffice. Do I read everything correctly?

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  • 3 weeks later...
  • 4 months later...

Sounds like another CCR, dubious if they are even legal to operate, or even if they are true FHSS... If anything, I can already tell you range will be really crappy compared to the real DTR700 radios. Most people who I've spoken to in regards to these Motorola DTR, they claim to be the best H/Ts they own... for a bit more get a Motorola and pass on the CCR garbage.

G.

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