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Walkie-Talkies?
Those radios are quite handy. Yard work, clearing snow on driveway,
mowing lawn, so you don't have to scream at your partner on incoming
telephone call or to tell favourite TV show is on. Use at shopping mall,
on picnic, hiking and slope then you don't get lost... hopefully. On the
Cruise ship at open water, your cell phone won't work, walkie talkie
will. Just use as a wireless intercom not like an emergency radio to get
rescued in remote mountain.
Did you know Walkie-Talkie was invented by
Canadian
?
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FRS? GMRS?
FRS - Family Radio Service, FRS radios require no license. 14 channels
0.5watts of radio power.
GMRS - General Mobile Radio Service require a FCC license in U.S..
FRS/GMRS combo radios sold at store limit radio power to 0.5watts on
8~14ch automatically. On 1~7 shared channels you have to lower radio
power manually (on radio more than capable of 0.5watts) in order to
operate without license. 15~22ch are permitted for GMRS only.
Any two or more radios that broadcast on the same frequency (FRS or
GMRS) and support the same channels will work together.
GMRS in Canada?
In Canada, hand-held GMRS radios up to 2 watts have been approved
for use since September 2004. A license is not required in Canada for
operation at 2 watts on the GMRS channels.
Which Radio?
Buy durable one, those radios are on action, tossed around. Tap case
around before you buy, you could tell thickness of plastic. Motorola and
Midland are pretty good in my opinion.
Don't get fooled by "UP TO xx Miles!!" on the package. Range is all
depending on conditions. The number on package is based on The Best
Condition.
Typical Range
Terrain/Range
(miles, F=floors) |
0.5 W
FRS |
1 W
GMRS |
2 W
GMRS |
2 W
MURS* |
| Outside Clear Flat Field |
1½~2 |
2~3 |
3~4 |
3~5 |
| Suburban Neighborhoods |
1~1½ |
1~2 |
1½~2 |
1½~3 |
| Urban Areas |
½~1 |
½~1½ |
1~1½ |
1~1½ |
| Inside Buildings/Malls |
½
5 F |
½~¾
15 F |
1
20 F |
½
10 F |
| Between Buildings/Houses |
⅛~½ |
½~1 |
½~2 |
1~3 |
| Woodlands (Moderate) |
1~1½ |
1~2 |
1½~2 |
2~3 |
| Woodlands (Thick) |
½~1 |
½~1½ |
1~1½ |
1½~2 |
*Multi-Use Radio Service (VHF) in U.S.Only
Rechargeable Battery Pack?
Unless you use radio everyday, those battery pack and drop-in charger
aren't needed.
Most of radio takes custom pack or standard AAA or AA. Instead of
getting radio specific battery pack, consider AA or AAA Ni-MH
rechargeable batteries and 1~2hrs quick charger. This way you could get
more use of batteries. Take batteries out and charge on quick charger
after use.
Majority of drop-in charger came with radios are not "smart", it will
keep charging even full. Also it may shorten battery life if charged
more than 48 hours. If you drain battery pack, charge takes 8~10hrs on
drop-in charger, so keep standard batteries handy. Or just get 2 sets of
Ni-MH AA, AAA rechargeables.
Ni-MH Rechargeable Batteries on eBay.ca
Radio Output Power?
Is higher radio power better? Yes and No.
Yes, if you're going to use at wide area, hunting, skiing but 5W radio
will not increase the range 10 times more than 0.5W model. Yet 5W radio
needs 10+ times power from battery to transmit. This will shorten the
operational time on battery. Keep in low power, when it became difficult
to reach, switch to high.
No, if you're going to use around house, event field or paintball game.
You don't have to talk loud when others are close by.
Channel Scan?
This feature checks all channels (some model has programming capability
on channels to be scanned) if in use or not. You may not need this
feature if you're using as a pair of walkie talkies. Just check the
channel before using radios. If someone is using the channel, simply
change to other channel.
What is CTCSS?
CTCSS stands for Continuous Tone Coded Squelch System.
Interference-Elimination Codes, sometimes refer to Tone Squelch,
TalkGroup or
Privacy Code.
It works like Key and Lock on Door. Walkie Talkie transmits sub-audible
tone (Key) and opens the door (Lock) on Receiver. For example: Group A
on Ch1 no CTCSS, Group B on Ch1 Code1, Group C on Ch1 Code38. Group B
won't be bothered by Group A (no Keys) C (wrong Key). Group A can
hear all groups because no Lock (incoming door is open).
Keep in mind that this feature doesn't actually protect your privacy.
As you see Group A who turned off CTCSS can hear all in the same
channel. In addition,
anyone who has chosen the same channel and code as you can still
transmit to your radio.
What is VOX?
Most of walkie-talkies, you have to press a button (PTT button;
Press-To-Talk) in order to talk. Models with a voice-activated (or
"VOX") feature begin broadcasting automatically when you speak in to
microphone. Some radios require special headset or microphone to use
this hands-free function.
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FRS/GMRS Channel-Frequency Table
FRS
14ch |
F+GMRS
22ch |
GMRS
15ch |
Simplex
MHz |
Rptr. in
MHz |
| 1 |
1 |
1 |
462.5625 |
|
| 2 |
2 |
2 |
462.5875 |
|
| 3 |
3 |
3 |
462.6125 |
|
| 4 |
4 |
4 |
462.6375 |
|
| 5 |
5 |
5 |
462.6625 |
|
| 6 |
6 |
6 |
462.6875 |
|
| 7 |
7 |
7 |
462.7125 |
|
| 8 |
8 |
|
467.5625 |
|
| 9 |
9 |
|
467.5875 |
|
| 10 |
10 |
|
467.6125 |
|
| 11 |
11 |
|
467.6375 |
|
| 12 |
12 |
|
467.6625 |
|
| 13 |
13 |
|
467.6875 |
|
| 14 |
14 |
|
467.7125 |
|
| |
15 |
11 |
462.5500 |
467.5500 |
| |
16 |
8 |
462.5750 |
467.5750 |
| |
17 |
12 |
462.6000 |
467.6000 |
| |
18 |
9 |
462.6250 |
467.6250 |
| |
19 |
13 |
462.6500 |
467.6500 |
| * |
20 |
10 |
462.6750 |
467.6750 |
| |
21 |
14 |
462.7000 |
467.7000 |
| |
22 |
15 |
462.7250 |
467.7250 |
| *
Nationwide emergency and road information calling. Nationally
recognized coded squelch for 675 emergency repeater operation is
141.3 Hz. |
CTCSS 38ch Standard Frequency Table
CTCSS
ch |
Hz |
CTCSS
ch |
Hz |
| 1 |
67.0 |
20 |
131.8 |
| 2 |
71.9 |
21 |
136.5 |
| 3 |
74.4 |
22 |
141.3 |
| 4 |
77.0 |
23 |
146.2 |
| 5 |
79.7 |
24 |
151.4 |
| 6 |
82.5 |
25 |
156.7 |
| 7 |
85.4 |
26 |
162.2 |
| 8 |
88.5 |
27 |
167.9 |
| 9 |
91.5 |
28 |
173.8 |
| 10 |
94.8 |
29 |
179.9 |
| 11 |
97.4 |
30 |
186.2 |
| 12 |
100.0 |
31 |
192.8 |
| 13 |
103.5 |
32 |
203.5 |
| 14 |
107.2 |
33 |
210.7 |
| 15 |
110.9 |
34 |
218.1 |
| 16 |
114.8 |
35 |
225.7 |
| 17 |
118.8 |
36 |
233.6 |
| 18 |
123.0 |
37 |
241.8 |
| 19 |
127.3 |
38 |
250.3 |
GMRS Channel Assignment Deference on F+GMRS 22ch model
BellSouth
2262
F+GMRS 22ch |
Standard
F+GMRS 22ch |
Standard
GMRS 15ch |
| 15 |
16 |
8 |
| 16 |
18 |
9 |
| 17 |
20 |
10 |
| 18 |
15 |
11 |
| 19 |
17 |
12 |
| 20 |
19 |
13 |
| 21 |
21 |
14 |
| 22 |
22 |
15 |
looks like BellSouth used GMRS channel
order for 15~22ch numbering. |