Question about Maxon Gmrs Two-way Radio Speaker/microphone

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Maxon GMRS-21a I own a pair of Maxon GMRS-21a radios and need to find replacement batteries. Can anyone tell me where I could find these? Thanks.

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I Just had Batteries Plus rebuild mine with 600mah cells $ 23 each.

Posted on Jan 24, 2010

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Hey do u have a picture of this radio?

Posted on Aug 11, 2010

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Replacement Batteries may be found here: Copy and Paste the above URL

Posted on Jul 31, 2007

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: I boought two maxon radioa and need an operators manual

Hi well, I would advise you to try the internet place the model etc on this media, and also try ebay,
worth a try some one may be able to help,

Posted on Apr 07, 2009

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SOURCE: need a battery

You can source the battery from the following vendor


Posted on Jul 25, 2009

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SOURCE: Reprogramming a Maxon SP 100G?

could you tell me if it is possible to reprogram the maxon sl30 it is currently on easiwave thanks best regards dennis

Posted on Jun 09, 2010

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What is the range of the uniden black walkie talkie gmrs 520

  • Pair of GMRS/FRS 2-way radios for person-to-person communication while hiking, skiing, and more
  • 22 channels (8 GMRS and 14 FRS); wireless range of up to 2 miles
  • Auto squelch function shuts off weak transmissions and unwanted noise at range limit
  • Single call alert tone; automatic power save circuit extends battery life; includes 2 belt clips
  • Each radio runs for up to 48 hours on 3 AAA batteries (not included); 1-year warranty

May 30, 2014 | Uniden Black Walkie Talkie Gmrs 520

1 Answer

How many watts do midland walkie talkie xt20 have?

These are FRS/GMRS (Family Radio Service/ General Mobile Radio Service) radios. The legal power limit for FRS is 500 milliwatts - or 1/2 watt. GMRS on the other hand is limited to a much higher 50 watt level. The wattage you transmit determines if you need to have a GMRS license. Most GMRS radios are in the .5- 5 watt range however.

The likelihood of your XT20 being a 1/2 watt out on both FRS & GMRS is very good. For Midland (or anyone else for that matter) to produce a radio with a 1 watt output that can run on just 3 "AAA" batteries would be quite the feat! If Midland did do this, the radio's battery life would extremely short. To balance the needs of light weight and battery life, output power needs to be reduced.

Claims of 20 miles is crazy. If you had these radios on mountain tops 20 miles apart - with a clear line of sight between them - MAYBE - you could hear one on the other. This would need to be done under only the most ideal conditions. The actual distance you can expect to get out of a pair of any brand FRS radios in "real world" conditions (line of sight blocked by trees and buildings) is about a mile.

An FRS/GMRS radio limited to 1/2 watt output when used on a GMRS frequency that is close enough to access a GMRS repeater system could easily cover 20+ miles. The key here is having a license and access to the repeater. Repeater owners take a dim view of unlicensed users access their repeater.

Channels 1 thru 7 are FRS and GMRS. That is, if transmitting .5 watts, you can use it as FRS. If transmitting more than .5 watts, you will need a valid GMRS license.

Channels 8 - 14 are expressly for FRS. Only .5 watts transmit power is permitted.

Channels 15 - 22 are expressly for GMRS at any transmit power up to 50 watts. Even if transmitting .5 watts, you MUST have a valid GMRS license on these frequencies.

I know - more infor than you wanted and no vclear cut number for wattage - but there's no info on these radios on Midland's site or anywhere else that I could find. Good luck!

Jun 16, 2012 | Midland XT20 Two Way Radio

2 Answers

How to get a Talkabout T5720 to communicate with a

The frequency range and operatngmode of the two radios are compatible. To get the Radius operating on a GMRS channel you'll need a Motorola programming cable and software, OR a trip to a Motorola dealer for frequency programming. Considering the cost involved, the 2-watt output of the Radius, and the 1-watt output of the Talkabout, you would be better off performance and cost wise buying a pair of 5-watt GMRS portables.

Jan 11, 2010 | Motorola Talkabout T5720 (7 Channels)...

1 Answer

I boought two maxon radioa and need an operators manual

Hi well, I would advise you to try the internet place the model etc on this media, and also try ebay,
worth a try some one may be able to help,

Apr 07, 2009 | Maxon GMRS50 (16 Channels) 2-Way Radio

1 Answer

Replacement Mike for a Maxon SM

Mike the only suggestion I can giv you is to contact Maxon or a local dealer asn ask for replacement parts. The radio shop I work for does not carry maxon or Altronics parts. I only have Motorola and Kenwood commercial radio parts.


Aug 26, 2008 | Maxon 49-HX 2-Way Radio

1 Answer

Maxon model 27SP Handheld 40 channel CB

well it appears to have a BNC connector, so that shouldn't be hard at all.

Jun 05, 2008 | Maxon HCB-10 40-Channels Handheld CB Radio

2 Answers

Reprogramming a Maxon SP 100G?

Hello codeencrypt,

THE SP100G is essentially the same radio as the SP100U UHF business band unit that Maxon made at the same time, just pre-programmed for GMRS. I believe there is a programming kit for this radio (Model number: SPK400C) which may still be available for purchase from Maxon directly. Otherwise, your best bet is going to be contacting your local Maxon dealer to see if they have the capability to program he radio.

Best regards,
"Go Ahead. Use Us."

Jun 04, 2008 | Maxon SP-100G (4 Channels) 2-Way Radio

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