[SBB] Radios for Birding
- Subject: [SBB] Radios for Birding
- From: "Kendric C. Smith" <[[email protected]]>
- Date: Tue, 14 Aug 2007 09:30:20 -0700
- Delivery-date: Tue, 14 Aug 2007 12:52:07 -0400
- Envelope-to: [[email protected]]
Title: Radios for Birding
Radios for
Birding
The FRS (Family Radio Service) Radios that we all
currently use on birding trips are no longer available.
The radios currently available are FRS/GMRS (General
Mobile Radio Service), i.e., two radios in one.
The FRS/GMRS radios have 7 FRS channels that can be used without an
FCC operator license, i.e., Channels 8-14. Channels 1-7
and 15-22 are GMRS channels, and need an FCC license.
GMRS radios are very similar to FRS radios, except that:
1) GMRS radio channel use requires you to purchase an FCC operator's
license (about $80).
2) GMRS radio channels generally achieve a greater range than FRS
channels.
3) While FRS radios may not legally be altered, GMRS radios may
legally be outfitted or retrofitted with optional antennas, car
antennas or home antennas to extend their range.
As long as you use a FRS/GMRS radio on Channels 8-14, you do not need
an FCC license, and they will function like the old FRS radios that
you are used to.
PRIVACY CODES. Some of the FRS/GMRS radios have two sets of
privacy codes: 38 CTCSS (Continuous Tone-Coded
Squelch System), and 83 DCS (Digitally
Coded Squelch). The DCS codes are usually just on the
more expensive radios.
The old FRS radios that have privacy codes use the CTCSS codes, so it
is still possible to communicate with some of the old FRS radios with
the new FRS/GMRS radios, if you are on the same Channel (8-14) and
CTCSS code (1-38).
--
Kendric C. Smith
927 Mears Court
Stanford, CA 94305-1041
(650) 493-7210
[[email protected]]
http://www.stanford.edu/~kendric/
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