Motorola DTR 550 Gen 2 (longer whip antennas)
1W, 900MHz FHSS
VSELP digital voice
90mS hop rate
I took a pair of these along on a cruise aboard the Carnival Sensation and had full ship radio coverage. These radios seem to do really well in difficult environments such as steel buildings, etc. The most I have gotten range wise is about 1.5 Mi., car- house (radio on 2nd story). I have never tried a range test in the open.
The DTR 550 radios come with 5 public groups programmed, you can go into programming mode and enable public talk groups 6-10. If you want more privacy you can buy an additional keyboard programmer and set a private 11-digit I.D so if someone wants to talk to you or hear you they have to have the same 11 digit I.D. This yields a possibility of 11,000,000,000 channels.
- High degree of privacy due to VSELP digital voice
- Greater security is possible by setting your own private channel (11-digit I.D)
- Perform well in buildings
-Price (at least $249 a pop new)
- Lack of a protective holder
- Also I wish you could disable the Nextel type beeps
Would I recommend these radios: Absolutely!
If you would like to hear how a Motorola DTR radio sounds being intercepted by a surveillance receiver check out the 'Files" section in the link below. Even though the 90mS hop rate can be tracked, the receiver can’t demodulate the digital voice. After analyzing the audio file I could determine the frequency was hopping about 11 times per second.