Radio Shack Catalog # 21-1926 FRS radio manual needed. Else tell me if I can change channels 1 - 7 to LO power out. Suspect they are hard coded for HI power out.

www.manuals.webscrawler.com/radio_shack/phone/43-335/

www.ask.com/manual/radio/shack/phone/43-335/

I have the manual for this radio, but can't figure out how or where to upload it. Clues?

Hi Kate,

The short answer to your question is: no, or "not readily". Here's why:

The Motorola 4900 radio operates in the FRS (family radio service) and GMRS (general mobile radio service) in the UHF band. This radio will work with any other FRS / GMRS band radios (no reprogramming of transmit and or receive frequencies is possible for these radios). The trick is that the numbering of the channels may differ from brand to brand ie: Ch1 on your Motorola may not necessarily be Ch1 on a Midland radio or other brand. A complete list of the frequencies and channel assignments for FRS /GMRS can be found on Pg. 17 of the manual. It is important to note that without a valid GMRS license, you are prohibited from transmitting on the GMRS only channels (Ch 15 through Ch 22). The combination GMRS/FRS channels (Ch1 through Ch7) and the FRS only channels (Ch8 through Ch14) are for individuals and family members that do not have valid GMRS licenses. If this is you, you should limit your transmissions to Ch1 through Ch14 only, as FRS does not require a license in the US. Unlicensed use of GMRS only Ch15 through Ch22 can result in fines and imprisonment if caught by the FCC.

Further complicating the issue are the so called "privacy tones". This is simply a very low or "sub-audible" frequency that is sent whenever transmitting. Motorola calls these "Interference Eliminator Codes". When another radio receiver is set to listen for a particular privacy tone, it stays silent until a transmission with the exact same privacy tone is detected. Again, these tones are listed in no particular order, but are generally listed as 1, 2, 3, etc. or a, b, c, etc. instead of the actual frequency in hertz. You can selectively set your radio to transmit & receive one of the 38 codes or, set the code to "0" to communicate with radio that do not offer these privacy codes - or does not use the same frequencies for these codes. You can read more on Motorola's codes on Pg. 19 of the manual.

The Motorola CP200 radio on the other hand is a commercial radio, and requires computer programming with Motorola software. The CP200 is offered as both Low & High sub-banded VHF and Low, Mid & High sub-banded UHF radios. You would need to have a CP200 that is designed to accept the Mid UHF band (438Mhz - 470Mhz) frequencies in order to program the 462Mhz & 467Mhz FRS / GMRS frequencies into it. The final obstacle would be what is called "FCC Type Acceptance". The CP200 is probably NOT Type Accepted for transmitting FRS/GMRS frequencies, and as such the Motorola dealer doing the programing might balk at putting them in. You can read a spec sheet on the CP200 here.

I hope this helps & good luck!

The radio will automatically have the correct power setting for the FRS channels.

best regards.

• The Hi and Low power are built into the radio and is dependent on the frequency/ channel you are on. Hi power is 1 Watt and Low power is .5 Watt. The radio is GMRS and FRS. The FRS are low power and the GMRS are Hi power.
• Channels 1-14 are FRS frequencies and Low power.
• Channels 15-22 are High power and are GMRS frequencies.
• FRS = Family Radio Service.
• GMRS = General Mobile Radio Service.

• If you have any comments please feel free to leave them here.
• Hope this helps and thank you for using FixYa.

Regards, Tony

• No the power is unadjustable for any of the channels. The first 7 channels are 5 watts and authorized for use with a license only, Even though everyone uses them just though I would give you the heads up on that. The remainder of the channels are 4 watts and all transmit on UHF (Ultra High Frequency)

Regards, Tony

check this link at page 21 or see below

CTCSS PRIVACY CODES FREQUENCY CHART (Hz) Code Freq. Code Freq. Code Freq. Code Freq. Code Freq. 1 67.0 9 91.5 17 118.8 25 156.7 33 210.7 2 71.9 10 94.8 18 123.0 26 162.2 34 218.1 3 74.4 11 97.4 19 127.3 27 167.9 35 225.7 4 77.0 12 100.0 20 131.8 28 173.8 36 233.6 5 79.7 13 103.5 21 136.5 29 179.9 37 241.8 6 82.5 14 107.2 22 141.3 30 186.2 38 250.3 7 85.4 15 110.9 23 146.2 31 192.8 8 88.5 16 114.8 24 151.4 32 203.5 * Channel 8,9 and 10 are designated Canadian Marine Frequencies * Channels 8~14 are low-power FRS license free channels Note: Privacy codes can be programmed for use on Channels 1~22 only

Go to radio shack site. There is probably a manual you can download if you search the site. The catalog number for the scanner is 20-427. you can search by that number if the model number does not work.

All gmrs radios also have frs frequencies in them. The frequencies are staggered.....1 frs....1 gmrs....1 frs....gmrs etc etc.
The only difference between frs and gmrs is power.... you are allowed to use more power on gmrs freq. So thats why they have more range. But the frequencies are right beside each other.

I would be surprised if your friends radio did not have frs channels in it also.
They should be able to communicate... most likly not on every channel but there should be some that the 2 of you share.

Press and hold the Lock key for 5 or 10 seconds until a beep sound is heard.

Good luck