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Posted: 2/18/2009 11:16:07 PM EDT
Anyone here own these radios? Experiences?




TriSquare TSX300-2VP eXRS Digital 2-Way Radio (Pair)

TriSquare TSX10A eXRS Universal Accessory Kit

 The radios operate in the 900 MHz range in a frequency hopping
 spread spectrum mode. This means that you key in a starting
 10-digit number and frequency hops 10 times per second from that
 point giving you private communication. Trying to monitor the
 radios with a scanner was unsuccessful, and even with another
 TSX300 without knowing the starting number you can't monitor the
 conversation. The way the system is set up you get 10-Billion
 channels - or frequency hopping patterns to keep you conversation

 The TSX300 radios have a text messaging function - similar to
 cell-phone text messaging - that lets you send a text message to
 others on the same channel which they can read at a later time.
 Text messages are limited to 80 characters per message.

 There is a private "My Radio" function that lets you call a single
 radio out of a group instead of broadcasting to everyone on a

 TSX300 radios contain the NOAA Weather band so you can get a
 weather report when needed.

Link Posted: 2/19/2009 4:30:42 PM EDT
I've thought about these before also, they seem to be good, for short range and when you want to have some level of privacy in your comms.

Link Posted: 2/20/2009 4:18:34 AM EDT
short range only.  even shorter range in the woods
Link Posted: 2/20/2009 9:51:43 PM EDT
I have thought about them for short range use in crowded areas where the FRS/GMRS channels will be loaded up. Looks like the radio could benefit from a longer antenna and a better case. For money, I guess it is not all bad. A 900 mhz antenna is only about 3 inches long for a 1/4 wave. I wonder if the antenna screws off?

Link Posted: 2/26/2009 4:21:56 PM EDT
I've used a similar (900 MHz ISM band) walkie-talkie system from Motorola.

Not the Motorola DTR radios, but the "DirectTalk" off-network walkie-talkie feature which is included as a freebie on a lot of recent (2006 or 2007 and later) Motorola iDEN handsets as used by Nextel, SouthernLINC and a few local cellular carriers.

DirectTalk uses the same architecture as Motorola's DTR walkie-talkies, but I don't know if they are compatible, or intentionally blocked by software from interoperability.  Basic version: 902-928 MHz ISM band, frequency-hopping spread spectrum, digital audio, 10 "channels" and a "private call" function that allows one to make a call to the telephone number programmed in the receiving handset.  

DirectTalk is not to be confused with the DirectConnect on-network walkie-talkie service offered by iDEN callular providers, which uses the same frequencies and towers as cellular phone service.

DT will work even on inactive iDEN handsets, the sort you can find on Ebay or Craigslist for under $10, so long as it's a DT capable handset: Motorola i275, i670, i776, i335, i355, i560, i570, i576, i365, i580, i880, possibly a few others; also on the Motorola "PowerSource" CDMA-iDEN handsets they build for Nextel: ic402, ic502, ic602 and ic902.  Some Boost handsets are supposedly capable of using DT also, with a minor software tweak.

The handsets require a SIM card be installed in order to boot-up, but it doesn't need to be an active SIM card, or even an iDEN SIM card.  And they allow the "phone number" assigned to the handset––-that DT uses for "private call"––-to be set by the user.

I've used a pair of i355s, fitted with the fixed antennas Motorola made for the i325 handsets, at ranges of over 6 miles.  The 900 MHz ISM band is very much line-of-sight, so terrain and vegetation will have a major effect on range.  It may be possible to configure a couple of handsets to function as a simple low-cost duplex repeater: set one to the input channel and route its output to the second handset, using a basic repeater controller module, on the output channel, add a car battery or other power supply, and site them on a hilltop or tall structure to give maximum coverage.  "Private calls" sent to the input handset's programmed number would then be retransmitted to other users in the area on one of the ten virtual channels.
Link Posted: 3/11/2009 3:48:13 AM EDT
Saw that AAFES sells these on base now. Interesting....
Link Posted: 3/11/2009 5:22:49 AM EDT
We got a pair like the ones illustrated, they were OK.

Range seems not quite as good as FRS, audio so-so.

Good point is the privacy and 'undetectibility' due to the frequency hopping.

Problem we had was one of them failed after I installed 3 lithium primary AA bats in one of them. It got real warm in my pocket, and I haven't taken the time to diagose what actually happened. Can't imagine the lithiums would cause this problem.

A huge advantage of these if you live in a country where it's legal, is they would make a perfect platform for a simplex repeater that isn't likely to be detected even if up on a high point.

Link Posted: 3/11/2009 6:12:22 PM EDT
Link Posted: 3/11/2009 7:33:29 PM EDT
I wonder how durable they are.

ETA: the Motorola offering is much more beefy/durable (dust, vibration, drop-resistant, etc)... but it's five times the price compared to the TriSquare model.
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