TriSquare eXRS TSX300-2VP 900MHz FHSS Digital Two-Way Radio (Charcoal Metallic/Black) (Pair)
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Product Description
TriSquare has revolutionized two-way radio communication with eXtreme Radio ServiceTM (eXRSTM). eXtreme Radio Service (eXRS) two-way radios use proprietary Frequency Hopping Spread Spectrum (FHSS) in the ISM band (900 MHz frequencies). This FHSS method combines the energy of digital technology with narrow band FM modulation strategy. Merging the two technologies facilitates a radio communications system that maintains a narrow band base signal to assure for maximum usable range within a given dB energy budget, comparable to standard fixed frequency narrow band FM radios, but with the added benefit of wide band digital security and privacy supplied by the frequency hopping spread spectrum algorithm. Preserving the data signal as narrow band FM modulation centered on discrete frequencies makes it possible for for a sizeable pool of non-overlapping hopping frequencies to draw upon inside a given section of the radio frequency (RF) spectrum.
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Technical Details
- New Advanced Digital Technology gives you Private and Secure Communications, no eavesdeopping and cannot be scanned
- 10 Billion Channels
- SMS Text Messaging between Radios
- Interference Free
- License Free
Buyer Testimonials
I personal both the TriSquare and Motorola Talkabout radios These of you who like to take your youngsters outdoors or skiing, might come across this of interest.
Motorola T9500XLR 25-Mile two-Way Radio
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This is a typical walkie talkie. It 22 channels in the 462 MHz range and has two watts of energy making use of GMRS/FRS protocols. The "25-mile" range is the theoretical max (i.e. on the lunar surface).
The primary dilemma with this technology is, properly, other people today. Imagine 1,000 folks sharing 22 channels at Disney Planet. Motorola goes by way of outstanding lengths to filter out other consumers. This is achieved by
(1) A unique filter that blocks non-Motorola radios. A great thought, but regrettably 90% of walkie talkies are produced by Motorola.
(two) A special privacy code which is assigned to each channel. Therefore, all your Motorola radios have to be configured to the very same privacy code in order to perform with each and every other. Codes range from 1 to 121.
Nonetheless, even with filters and privacy encryption, if a person else is transmitting on your channel, there will be substantial interference.
TriSquare TSX-300 eXRS 900MHz FHSS 2-Way Radio
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These use a completely diverse technologies. They transmit on 900 MHz in a 100% digital protocol. They sort of operate like cell phones, without having the service provider. Each radio is assigned a distinctive 10-digit number. No matter how crowded the ski resort, you are going to constantly have a private channel for your household. These radios use 1 watt of energy. The manufacturer does not produce distance performace, but claim that the radios have a range equal to or improved than the Motorola Talkabouts.
Comparison
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I took both brands with me and drove around town - a typical suburban setting with residential and commercial places. I rated voice high-quality on a scale of to 3 as follows:
no reception
1 unintelligible
2 intelligible but noisy or garbled
three intelligible and clear
I then plotted the typical rating as a function of distance. The digital eXRS technology was superior to the GMRS/FRS model. The eXRS typical rating was 25% greater than the Motorola Talkabout. The max distance I could get in my area (possessing lots of trees and buildings) was .45 miles with either radio. The Motorola box claims "two miles in an urban setting", which is just not correct in my case.
The Motorol wins in general voice high-quality. When the signal is sturdy, the voice excellent of the Motorola was very clear, whereas the eXRS unit frequently had a some background white noise.
Conclusion
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The TriSquare eXRS radios lack a bit in overall voice quality. But, getting superb voice top quality in a Motorola radio is worthless if you cannot get by means of on a crowded channel. The advantages of the eXRS radios out way the 1 or two shortcomings, in my opinion. I tried the TriSquare units at a ski resort. They work just as advertised. No interference from other men and women whatsoever.
The TriSquare comes with two vox headsets, which work pretty nicely. The Motorola talkabout did not come with headsets, which expense $20 a piece at Radio Shack.
Niether the Motorola Talkabout nor the TriSquare eXRS appear especially rugged or weather resistant, so I'd rate them the similar in that regard.
The NOAA weather reception on the TriSquare was pretty bad. I have two other NOAA radios, which function just fine in my area. The Talkabout had really beneficial NOAA reception.
I've tested six of these radios for a number of hours. The range is quite fantastic for a personal radio, and was better than FRS radios that I've applied in the past. In spite of this, I discovered that whenever I changed channels on two of the units (for example, to chat privately), and then changed them back, they would be unable to communicate with the remaining units for some period of time. I also located that if you turned on two units and talked in between them, and then turned on a third unit within 20 seconds or so, the third unit would be unable to communicate with the initially two.
I exchanged emails with technical assistance and determined that the trouble is triggered by a design concern with these units which basically calls for you to wait 30 seconds before transmitting whenever you alter channels or when you very first turn the unit on. If you don't wait, your unit could turn into out of sync with the other units, and you will not be in a position to hear or talk to anyone, even if they are on your channel. You also have to maintain the newly turned on unit at least 20-25 feet away from any other units that are already on, or they could grow to be incorrectly synced.
Here's the predicament: Every "channel" on this radio in reality makes use of 50 separate frequencies and the radio hops in between them whenever it is transmitting or receiving. When you first turn on a radio, or when you adjust to a new channel, your radio goes to the Frequency 1 for that channel and waits there until one of two issues happen: Either you push the transmit button, or the radio picks up someone else undertaking so. The moment that happens, the radios starts hopping via the 50 frequences in a sequence that is defined by the channel number you selected. When you cease talking, the radio continues by means of all 50 frequencies, and then returns to Frequency 1 to wait for one more transmission. These radios take about 20 seconds to hop via all 50 frequencies.
As lengthy as each radios begin hopping at the exact same time, every little thing functions outstanding. But, if one radio transmits within 20 seconds ahead of a different is turned on, the two will be out of sync.
Here's an example: If you turn both Radio 1 and 2 on at the very same time, and then get started transmitting, Radio 1 will transmit, Radio two will get, and they will both start hopping with each other, through frequencies 2 to 50. All is effectively.
If you then turn on Radio three even though Radio 1 and two are carrying out their hopping, it will be on frequency 1. It will wait at Frequency 1 until either you transmit or it hears an individual else transmitting on Frequency 1. It cannot hear radios 1 and 2 considering that they are not on frequency 1. They are hopping via frequencies two-50 and will be carrying out so for roughly 20 seconds just before they return back to frequency 1. If you wait for radio 1 and two to get back to Frequency 1 (which can take as lengthy as 20 seconds), then Radio three will join the hopping and Radio 3 can hear Radio 1 and two.
On the other hand, if you transmit on Radio 3 before Radios 1 and two return to Frequency 1, Radio three will begin hopping, but it will be out of sync with Radio 1 and 2. Thus, Radio 3 may possibly be hopping past frequency 13, but Radios 1 and two can be hopping past frequency 42. They won't be in a position to speak to 1 one other.
So, if you have transmitted on Radio three, you will have to cease transmitting on Radio three, and wait 20 seconds for it to get back to Frequency 1 (exactly where it will stop) or turn the radio off and then back on (so it will commence on frequency 1). Then you'll have to wait one other 15-20 seconds for radio 1 and two to get back to frequency 1 as nicely. Then all the radios will be in sync again.
To complicate matters just a tiny additional, if Radio two is receiving a transmission and Radio three changes to the identical channel as Radio 2, Radio two will emit some type of spurious emissions which can confuse Radio three and cause it to begin hopping even although it is not in sync. This will result in a choppy/staticy signal on Radio three, and will cause the radio to begin hopping even even though it is not in sync. The signal will come and go.
To solve this trouble, you can move Radio 3 away from any radio receiving on the similar channel (at least 25 feet) and then wait for it to sync with all of the other radios.
The very same challenge can occur if you turn all three radios on at the identical time in close proximity, and then transmit on 1. A single of the two that is receiving can send out a spurious emission causing the third to be out of sync.
These concerns are somewhat painless to overcome if you know about the difficulties and you either under no circumstances alter the channels or at all times wait 20-30 seconds soon after doing so. But, if you are utilizing 3 or extra, you possibly want to use the private channel feature, which enables two radios to go off on their own. If they do so, when they come back to the group channel, they can be out of sync with the radios that did not go to a private chat, if any of them have transmitted inside 20 second just before the private chatters came back to the group channel.
Even worse, the private chatters will possibly be in sync with every other, and so they'll be in a position to talk on the group channel, but they will not be heard by everyone else and they will not hear everyone else, until they quit and wait 30 or so seconds...
So, if you are willing to wait 30 or so seconds just about every time you turn the radio on or adjust channels, and your radio is not near a different radio through that time period, everything's fine. But, I seriously would prefer a radio that does not have these concerns.
Motorola tends to make a radio (that is significantly more high priced) that doesn't appear to have these concerns, and I've had multi-handset cordless phones that use Frequency Hopping Spread Spectrum that do not have this difficulty either. My FHSS cordless even has a 2-way mode, and I've in no way observed this sort of matter prior to. I assume that this is something that they could appropriate with a handshaking protocal.
There are a number of methods this problem could be engineered to perform ideal. The units could sync themselves to a clock when they initial connected and then use that clock to identify which channels to hop to when channels are changed, or a single frequency could be utilized in order to coodinate hops.
It really is as well bad they did not resolve this concern. If they had, this would be a amazing item.
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