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#11
December 11th 12, 08:36 PM
posted to rec.radio.amateur.equipment
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CB radio for emergencies?
In article ,
Justin wrote: What about those TriSquare radios? I know TriSquare is toast, but was the technology any good? The technology used in the TriSquare is the same as found in the iDen/ISM Nextel Cellphones when used in direcTalk Mode... They used the same Motorola chipset. These Phones are available on eBay for DIRT CHEAP ($10US or less each) They are Part15 Devices and ARE SECURE Comms with about the same range as FRS Radios. They are 902-928 Mhz Spread Spectrum Radios... and if you are a Tech Class or Higher Ham, you can boost Output Power up to 10 Watts, and patch in any External Antennas you like. A full writeup can be found at: http://www.survivalmonkey.com/thread...-comms-device- for-your-cn-aoo.33828/ -- Bruce in Alaska add path before the @ for email |
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#12
December 11th 12, 10:26 PM
posted to rec.radio.amateur.equipment
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CB radio for emergencies?
On 12/11/2012 3:36 PM, Bruce Gordon wrote:
In , wrote: What about those TriSquare radios? I know TriSquare is toast, but was the technology any good? The technology used in the TriSquare is the same as found in the iDen/ISM Nextel Cellphones when used in direcTalk Mode... They used the same Motorola chipset. These Phones are available on eBay for DIRT CHEAP ($10US or less each) They are Part15 Devices and ARE SECURE Comms with about the same range as FRS Radios. They are 902-928 Mhz Spread Spectrum Radios... and if you are a Tech Class or Higher Ham, you can boost Output Power up to 10 Watts, and patch in any External Antennas you like. A full writeup can be found at: http://www.survivalmonkey.com/thread...-comms-device- for-your-cn-aoo.33828/ That sounds pretty damn awesome! Is Trisquare going out of business? |
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#13
December 14th 12, 11:53 PM
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Quote:
There is a pretty good chance that what you are talking about is not legal. I don't know if those phones are Part 97 approved and I am not sure if spread spectrum or digital phone is legal - because of the way it might be scrambled being a phone and all. Second problem is that in order for any type of communications to work - you need to have two radios on the same frequency and I highly doubt that in a emergency you are going to find people operating on 900 mHz.. As a matter of fact, unless you are in a big metropolitan area - you probably won't even hear anyone operating on 220 MHz anymore.. Most Technician's are relegated to two meters phone - due to the fact that most walkie talkies are two meters and the cheapest mobile radios are two meters only.. Even just getting someone to buy a dual band transceiver or better equipment is like pulling teeth... Like I tell all perspective hams - get a license and join a real ham radio club and LEARN... Find a Elmer - don't think that you can do it on your own..
__________________
No Kings, no queens, no jacks, no long talking washer women... |
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#14
December 15th 12, 08:28 PM
posted to rec.radio.amateur.equipment
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CB radio for emergencies?
In article ,
Channel Jumper wrote: 'Justin[_4_ Wrote: ;799509']On 12/11/2012 3:36 PM, Bruce Gordon wrote:- In , wrote: - What about those TriSquare radios? I know TriSquare is toast, but was the technology any good?- The technology used in the TriSquare is the same as found in the iDen/ISM Nextel Cellphones when used in direcTalk Mode... They used the same Motorola chipset. These Phones are available on eBay for DIRT CHEAP ($10US or less each) They are Part15 Devices and ARE SECURE Comms with about the same range as FRS Radios. They are 902-928 Mhz Spread Spectrum Radios... and if you are a Tech Class or Higher Ham, you can boost Output Power up to 10 Watts, and patch in any External Antennas you like. A full writeup can be found at: http://tinyurl.com/cbdaxd8 for-your-cn-aoo.33828/ - That sounds pretty damn awesome! Is Trisquare going out of business? I would contact the ARRL before I would make a investment like that.. There is a pretty good chance that what you are talking about is not legal. I don't know if those phones are Part 97 approved and I am not sure if spread spectrum or digital phone is legal - because of the way it might be scrambled being a phone and all. Second problem is that in order for any type of communications to work - you need to have two radios on the same frequency and I highly doubt that in a emergency you are going to find people operating on 900 mHz.. As a matter of fact, unless you are in a big metropolitan area - you probably won't even hear anyone operating on 220 MHz anymore.. Most Technician's are relegated to two meters phone - due to the fact that most walkie talkies are two meters and the cheapest mobile radios are two meters only.. Even just getting someone to buy a dual band transceiver or better equipment is like pulling teeth... Like I tell all perspective hams - get a license and join a real ham radio club and LEARN... Find a Elmer - don't think that you can do it on your own.. Your an Idiot.... There is NO Part 97 Approval required for Transmitters, only for Amplifiers that are built "For Sale"... I mean, REALLY... Duh..... These units are Part 15 Devices when used in the 902-928 Mhz ISM Band, which is co-Located with the 902-928 Ham Band, which is a Secondary Use Ham band.... So any use of the device, by a HAM of Tech Class or Higher, may ADD External Antennas and Amplifiers, as long as they do NOT exceed the Power Limit of 10 Watts, which was added to Part 97 this last spring, in a Report and Order from the FCC, which changed the Allowed Power Output for Spread Spectrum Frequency Hopping Systems in the 902-928 Mhz Ham Band to 10 Watts.... Duh.... Your Scrambling Theory, is also BOGUS, in that it is NOT Scrambling but Digital Modulation, which by it's nature is unrecoverable without knowing the Spreading Code, and Spectrum Chunk, USED..... DUH... You just don't get it, do you.... These type Units are for SECURE Comms within a Group... Not for communicating with unknown Users.... They allow the Group, to communicate within their Group, knowing that their Comms ARE SECURE from Scanners, and DF'ing non-Group outsiders. They ALSO allow individuals in any Group, to move to Private SECURE Unit to Unit Mode, that allows only those two Units to have a SECURE Comms interchange, that can't be heard by any other of the Groups Users, by using the Programmable Ten Digit Unit Number of the other Unit for the Spreading Code, instead of using one of the 1-15 preProgrammed Spreading Codes, which are used in Squad Comms Mode..... Must be nice to comment on Technology that you have NO CLUE, about... Kind of like a Talking Head on the Boobtube.... Are you Blond? |
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#15
December 16th 12, 01:48 AM
posted to rec.radio.amateur.equipment
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CB radio for emergencies?
In article ,
Justin wrote: If you do get the pair of handheld CB radios, they should be a relatively inexpensive "learning experience". They may be of some use, but you will learn they do not work over a very long distance. Their range is mostly limited by interference from the many other users of the Citizens Band, even if the radio at home is connected to an outdoor antenna. The CB radios would be for short range, maybe half a mile, or around the neighborhood. When Sandy hit the cell phones were out for days. Even though my area was relatively unscathed, the towers were still down. Just having the ability to talk to a family member back at the house would be nice. Justin- CB walkie-talkies might be capable of that if no one else was there. Considering that you can sometimes hear other people hundreds of miles away, half a mile might be optimistic! Go ahead and get a pair. You probably have time before the next storm, to see how well they would work for you. For local information about GMRS repeaters, look for a store that repairs the radios. They can probably fill you in on repeater availability, and will also sell you the radios. Fred K4DII |
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#16
April 4th 13, 07:33 AM
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[quote=Channel Jumper;799502]
Quote:
I hate to tell you that you are wrong on about 80% of your GMRS comments, True-"GMRS requires a license and permission to use another persons repeater". True and False-"The repeaters are not open"Some are some are not according to the owners all you need to do is ask permission and the repeater owner is supposed to keep a list of regular users. False-"GMRS repeaters are leased to others",donations may be given for upkeep but leasing GMRS is against FCC part 95 rules. False-"since you have to apply to a repeater council for permission for a frequency and the repeater council charges a fee - if there is an available frequency available and a fee to belong to the repeater council".There is NO repeater coordination for GMRS,you are free to use any repeater pair on a shared basis with other licensed users with exceptions of power limits on certain frequencies near the Canadian border. False-"Unless you are willing to pay a monthly fee for permission to use someone's tower, a license fee of $85.00 every 10 years and the cost of good transceivers and antenna's - you ought to forget about GMRS...." A GMRS license is $85.00 for 5 years it covers you whole family including in laws, also a good site to get a idea of repeaters around the country which mind you is not a complete list is www.mygmrs.com. On a side not hand held radios are limited to 5 watts and mobile transceivers are limited to 50 watts along with low power base stations. I hope that clears up the misconceptions of GMRS.I prefer to read what the rules actually say instead of hearsay. http://www.ecfr.gov/cgi-bin/text-idx... 1.1.5.1.139.1 |
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