Tag Info

Hot answers tagged

11

In both the U.S. and Canada, amateur radio operators serve an important role in providing emergency radio communications during war, disaster, terrorist attack, or whatever other emergency. So amateur radio operators take an extremely dim view of unlicensed operators using frequencies allocated to amateur (or sometimes commercial) radio. Many will even hunt ...


6

Presuming you do not have Amateur Radio licenses, or similar qualifications, you are then limited to various unlicensed options. The answer will then vary by region, but as you mention Canada, your best bet will be to use the GMRS/FRS (General Mobile Radio Service / Family Radio Service) which as basically replaced the old CB and walkie-talkie bands for ...


3

There's a lot of variation between radios. There's even a great deal of variation for a given set. I own a pair of radios advertised as "35-mile range." I don't believe that's false, but it's probably under ideal conditions - a clear day with two people on mountaintops 35 miles apart, with an unobstructed view, for example. I did a test with mine where I ...


3

Not a direct answer, but to expand a bit it is possible in the UK, however you need to register your mobile first and it's really meant for those who are hard of speech or hearing rather than poor signal areas. Having said that, if you do register and then text in a poor signal area and give details of your location, I'm sure the emergency would still be ...


3

I didn't know this, but in fact, the ability to send text messages to 911 is being developed and could be ready within a year or two. http://hraunfoss.fcc.gov/edocs_public/attachmatch/DOC-321040A1.pdf The four major US wireless carriers expect to be ready to route text messages to 911 by May 15, 2014. However, it may take longer for local emergency ...


3

Instead of sending a text message to a single person, you might think of using a group SMS to increase the chance for having a friend forwarding the call to 911. Or use whatsapp in a group, in that case you see it will be send (and possibly received).


3

Excluding the legality question, as to be honest, that's likely to depend on who detects you, and how much it interferes with licensed traffic, the safety angle has a couple of aspects: It doesn't look like you will clash with emergency services, however there is a risk that you will clash with local amateur radio operators who may be handling emergency ...


3

What you are looking for is a walkie-talkie / two-way radio / private mobile radio with voice control. Normally, to communicate with a walkie-talkie, you need to press a transmit button. Some models, however, have voice-control: they will automatically start transmitting based on voice input. My friend and I used the Midland G7 XTR, that includes this ...


1

The range mostly depends on the power of your radio. 500 mW is OK, 5 W is much better. You should study what frequency ranges and what maximum power are allowed in your country for public, and go for the max power. Ranges may include FRS, GMRS, LPD, PMR. E.g. in Russia FRS is prohibited and LPD is allowed, while e.g. in Kazakhstan it's vice versa (so we are ...


1

Family Radio Service, the most commonly available walkie talkies, operates on frequencies around 460 MHz. The power is limited to only 500 mW, and as such is very limited. Wikipedia reports that the average range is roughly a mile, which is quite reasonable, given the power levels and poor antennas. Of course, this may vary. If you are wanting more reliable ...



Only top voted, non community-wiki answers of a minimum length are eligible