Question about Motorola GP300 Compatible 2 Way Radio Battery Eliminator

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How to reprogram two way radio, its a motorola gp 339 and its set to 5 channels from when i brought it, can i reset it or reprogram it to normal uhf channels?

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In order to reprogram this Motorola GP339 you need to have a programming software, radio interface box and programming cable for this radio then you can read and change frequency in it. To reprogram to UHF channels this radio must be in UHF band. Good luck!

radcom907

Posted on Nov 02, 2010

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What is the frequency for this radio what ever came with it


These are programmable radios that require Motorola software and programing equipment that is only available through a Motorola dealer. A reputable dealer should be able to help you reprogram the radios with the appropriate frequencies and codes for your use.

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W do I turn off squelch control on a digitech DC-1065 marine radio hand held 5 Watt


Hi David,

Before I try to give advice, I need more info.

I possess a Digitech DC1065 UHF 80 Channel CB hand held, so there seems to be some confusion here.

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Firstly, How many channels does your radio have?

If the answer is 80, then what you have is a UHF CB, not a marine band radio.

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Can two different style motorola 2 way radios be changed to same frequency


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!

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  • HI, I can help.


  • You will have to contact an authorized Motorola dealer such as http://www.buytwowayradios.com/products/motorola/motorola-ax-axu4100.aspx or any reputable two way radio store in your area. Those radios are still very programmable. I wish there was some way around this but there is not and Motorola gets very grumpy when unauthorized people end up with their interface because it is in fact quite the money making racket.


  • If you have any comments please feel free to leave them here.
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Can motorola talkabout T5720 FRS/GMRS talk with Motorola GP338 UHF?


Your GP338 would need to be reprogrammed to one or more of the frequencies available in the T5720. If you are using the interference code eliminator, it would also need to be programmed into the GP338. Take your GP338 to your local Motorola dealer for reprogramming.

Here is a link to the user guide for the T5720, where you will find a list of frequencies: http://www.giantintl.com/RadioPDFs/Outdated%20Manuals/T56XX_57XX_User_Manual_E.pdf See page 19.

Best regards.

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1 Answer

I recently purchased a couple of second hand Motorola Two-Way Radio DP3601 which are programed to 10 channels. How can I reprogram them or reset each to factor settings


Sorry to report there is [ No ] Reset line on a GP300
as what one might want to see on a Computer.

So long as you have a stable programming computer
platform to work from, you should be able to restore
the radio by Cloning one radio to the other. The radios
must be identical series.

There are some other proceedures, but much more
complex to detail here....

If you can hunt down the GP tools , that may be able
to help, but those tools are not supplied by ( or licensed )
by Motorola.

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Require Frequencies for CTCSS codes for Motorola GP 2000


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

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1 Answer

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On the T5720, another item to what for is the Qt noise filter. Be certain to set it to zero unless using the T5720 with others of the same model. It can also block transmissions. Here is a link to a user manual for the T5720 http://lib.store.yahoo.net/lib/starbattery/T56XXusersguide.pdf

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Compatability


would a MU21CV be a VHF or UHF????

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