Channel Frs
Channel Frs
MURS (Multi Use Radio System) Question on Signalling…..?
I have read over many times GMRS, HAM, FRS, and MURS documents. I know MDC Signalling which is used on Motorola Products Is prohibited from use on FRS and GMRS. I havent found anything on the MURS though saying you cannot use MDC 1200 (- or +) signalling on MURS un licensed freqs. Of course certain restrictions apply like cannot exceed 2 watt output and no repeater, and no antenna exceeding 20 ft. but does anyone here know for a FACT or work for the FCC that MDC signalling isnt allowed on the free VHF Un licensed MURS channels?
I am GMRS/HAM certified though planned to use a MURS channel for my small business within the store/property. I know it is also prohibited to run on carrier mode using MURS and DPL/PL must be used and not interferring with other users in area.
I know the factory 2watt Moto’s for MURS use a cheap chirp at end of transmission for user hearing, so bascially would the MDC signal tone (just for that purpose, not a PTT ID system) be illegal to use on MURS?
47 CFR 95.1307 “Permissible communications” states:
(a) MURS stations may transmit voice or data signals as permitted in this subpart.
(b) A MURS station may transmit any emission type listed in Sec. 95.631(j) of this chapter.
(c) MURS frequencies may be used for remote control and telemetering functions. MURS transmitters may not be operated in the continuous carrier transmit mode.
(d) MURS users shall take reasonable precautions to avoid causing harmful interference. This includes monitoring the transmitting frequency for communications in progress and such other measures as may be necessary to minimize the potential for causing interference.
47 CFR 95.631(j) states:
(j) A MURS transmitter must transmit only emission types A1D, A2B, A2D, A3E, F2B, F1D, F2D, F3E, G3E. Emission types A3E, F3E and G3E include selective calling or tone-operated squelch tones to establish or continue voice communications. MURS transmitters are prohibited from transmitting in the continuous carrier mode.
Those alphanumeric emission designators are defined in 47 CFR 2.201. F1D and F2D stand for frequency modulation of a single channel containing quantized or digital information without the use of a modulating sub-carrier (F1D) or with the use of a modulating sub-carrier (F2D), excluding time-division multiplex, for data transmission, telemetry, or telecommand. While I’ll let others debate the finer points of whether MDC-1200 is F1D or F2D (see http://batboard.batlabs.com/viewtopic.php?f=1&t=54757 ), assuming MDC-1200 is either F1D or F2D, then MDC-1200 should comply with 95.631(j) unless there is some other limitation on MURS of which I’m not aware or the FCC has some other interpretation, provided the transmission is not made using a “continuous carrier mode.” You’ll note that someone in the discussion on batlabs.com mentions Riley Hollingsworth K4ZDH of the FCC. You might want to check to see what his thoughts are on MDC over MURS.
|
|
Cobra Electronics FRS 200 (14 Channels) Two Way Radio $0.99 |
|
|
22-Channel GMRS/FRS Rechargeable 2-Way Radios MR355R $74.99 |
|
|
Midland GXT1050VP4 50 Channel GMRS/FRS Radio Waterproof $73.95 |
|
|
MEMOREX 14 Channel FRS Base Station MK1800 NEW in PKG. $29.99 |
|
|
NEW Motorola 35-Mile Range 22-Channel FRS/GMRS Two-Way $56.50 |
|
|
NEW Motorola 35-Mile Range 22-Channel FRS/GMRS Two-Way $56.50 |
|
|
NEW Motorola 35-Mile Range 22-Channel FRS/GMRS Two-Way $56.50 |
|
|
COBRA CLEARCALL MD #FRS-70 TWO CHANNEL WALKIES RADIO $14.99 |
|
|
Motorola Talkabout T6400 FRS/GMRS 22 -channel NEW $15.51 |
|
|
Cobra CXR900 30-Mile 2- way Radio 22 ChANNEL FRS/GMRS $64.99 |
|
|
Cobra CXR900 30-Mile 2- way Radio 22 ChANNEL FRS/GMRS $64.99 |
|
|
Uniden 2-way radio 2 pack- 22 Channel- FRS/GMRS- Batter $26.99 |
|
|
2 AUDIOVOX FRS 14 CHANNEL RADIOS MODEL FR-130 $17.95 |
|
|
22-Channel GMRS/FRS Rechargeable 2-Way Radios w/11 Weat $88.48 |
|
|
22-Channel GMRS/FRS Rechargeable 2-Way Radios w/11 Weat $76.48 |
|
|
22-Channel GMRS/FRS Rechargeable 2-Way Radios w/11 Weat $65.98 |
|
|
2-Pack FRS/GMRS 2-Way Radios w/22 Channels & Dual Charg $37.03 |
|
|
Conair FRS316SLV 22-channel FRS/GMRS $19.89 |
|
|
Motorola FRS 2-pack 16 mile 22 Channels Dual Power $36.95 |
|
|
Motorola FRS T6210 14 Channel 2 Mile Two Way Radio $34.18 |
|
|
Uniden GMR648-2CK 22-Channel 6-Mile GMRS/FRS Two-Way $14.95 |
|
|
MIDLAND NEW FRS/GMRS 36 CHANNEL 2 WAY RADIO LXT490VPS $48.99 |
|
|
22-Channel GMRS/FRS Rechargeable 2-Way Radios MR355R $74.99 |
|
|
Uniden GMRS380 15-Channel 5-Mile GMRS/FRS Radios – PAIR $24.99 |
|
|
NEW Motorola 35-Mile Range 22-Channel FRS/GMRS Two-Way $53.39 |
|
|
22 Channel 10 Mile range FRS/GMRS radio GMR1035-2 $11.99 |
|
|
2-Mile Two-Way FRS/GMRS Radio w/22 Channels NEW (A4) $9.99 |
|
|
Memorex MK1800 14 Channels 2-Way Radio FRS BASE STATION $14.99 |
|
|
Hello Kitty FRS Family Radio 22 Channels Communicators $29.95 |
|
|
Midland GXT1050VP4 50-Channel GMRS/FRS Radio-Waterproof $89.99 |
|
|
Conair FRS316SLV 22-channel FRS GMRS 2 miles Set of 2 $19.95 |
|
|
Memorex MK1800 14 Channels 2-Way Radio FRS BASE STATION $14.99 |
|
|
Memorex MK1800 14 Channels 2-Way Radio FRS BASE STATION $14.99 |
|
|
Cobra Micro Talk FRS-100 Two-Way Radio 2 Channel $39.99 |
|
|
14 CHANNEL 2-WAY RADIO FRS (set of 2) $35.00 |
|
|
RADIOSHACK 22-CHANNEL GMRS FRS 2-WAY RADIO SET NICE! $24.95 |
|
|
Conair Two Way FRS Radios 14 Channel Backlit LCD NEW $14.99 |
|
|
Memorex MK1800 14 Channels 2-Way Radio FRS BASE STATION $14.99 |
|
|
Conair FRS316SLV 22-channel FRS/GMRS Two Way Radio $39.99 |
|
|
Uniden 28-mile 22 Channels Sumbersible CAMO FRS 2-Way $84.95 |
|
|
Memorex MK1800 14 Channels 2-Way Radio FRS BASE STATION $14.99 |
|
|
Midland 42 Channel 34 Miles GMRS FRS 2 Way Radio $62.95 |
|
|
Memorex MK1800 14 Channels 2-Way Radio FRS BASE STATION $14.99 |
|
|
22 Channel FRS/GMRS 15 Mile 2-Way Radio $53.00 |
|
|
BRAND NEW Conair FRS316SLV 22-channel FRS/GMRS $59.99 |
|
|
Cobra Micotalk GMRS/FRS 22-Channel 27-Mile 2-Way Pair! $104.63 |
|
|
RADIO SHACK FRS 1 CHANNEL PERSONAL RADIO $49.99 |
|
|
RADIO SHACK FRS 14 CHANNEL PERSONAL RADIO $79.99 |
|
|
RADIO SHACK FRS 14 CHANNEL PERSONAL RADIO $49.99 |
Where land phone stop, mobile phones start. And where mobile phone stop, two way radios start. Truly, taking you beyond the zone of all other means of communication, these radios create a never-failing connection between you and those whom want to communicate. In the forest, under the water, on the top of the mountain; wherever you go, you are always within the reach of the person or persons you have around.
Thus, unlike mobile phones, there is no fear of running out of coverage area if you have two way radios in your hand. With them you can enter into a dense forest chasing the deer for which you have been lurking for long time. Or you can climb high on the mountain while enjoying the tracking. You can even stay connected while skiing in open air. In all of the above occasions, this small portable gizmo will be fully operational.
Two way radios are basically a device that can both transmit and receive content. They work on certain frequencies and do not require the backing of a network. Generally a range of 2 to 10 miles is covered by these radios. They work almost like the CB radios usually used by truck drivers. The user and other members of his group decide on a channel to use and then they broadcast over it.
There are two basic types in two way radios : those that operate on Family Radio Service (FRS) bands only and those that operate on FRS and also on General Mobile Radio Service (GMRS) bands. FRS radios can transmit to a maximum range of about 2 miles, if they get a favorable condition. Because of limited coverage, they are usually less expensive.
On the other hand, two way radios operating on GMRS transmit at higher power levels and may have detachable antennas. Under ideal conditions they can transmit over greater distances, almost up to 10 miles. However, the usual distance covered by them is 5 miles maximum. Because of higher coverage they tend to be more expensive than FRS radios.
About the Author:
Dennis Jaylon is a renowned business writer who has years of experience in writing technical reviews, product descriptions and product feature analysis of technical gadgets and gizmos. He has won appreciation especially for enlightening people about the latest communication gizmos…the Two way radios
Article Source: ArticlesBase.com – Where Others Stop; Two Way Radios Start