Question about Maxon Radio SL55, SP130, SP140, SP150 Compatible Battery

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SL55 Not Transmitting/Recieving

Ok, Ive got two maxon SL55's both fully charged but i cant get them to talk to each other, when one of them is transmitting (on the same channel or other) the other turns yellow on the TX but no sound.

I have also got a Zycomm 5016 which dosent pick up anything.

Thanks J

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The two radios are on different CTCSS Tones

Posted on Nov 22, 2008

Reprograming these radios is required as thay are on repeater freqs ie tx hi freq, rx lo freq

Posted on Apr 07, 2008

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Changed the battery in my 2-Way Radio CLS1110 and it will turn on but when you push talk it goes off


The battery is bad or not charged. Check your charger and charger/battery connection. Clean all contacts with a pencil eraser and try charging again. With a new battery it may take up to 3 charge cycles to fully charge your battery.

Best regards.

Jan 20, 2014 | Motorola CLS 1110 (1 Channel) 2-Way Radio

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How to get maximum range


Have a fully charged good battery. Hold your radio upright, perpendicular to the ground, when transmitting. (Tilting to the side can significantly reduce range.) Wear your radio higher on your body if carrying the radio. Height and placement of antenna has much to do with good range. Talking line-of-sight in perfect conditions a portable radio will get approx. 2 mi., talking in and out of a building you may get 1/4 to 1/2 mi. Obstacles inbetween the two radios will reduce range, so each location may differ. From a mountaintop you may be able to talk many miles into a valley below. Your radio can basically talk as far as the antenna can see.

Dec 12, 2013 | Uniden Gmr 5099-2Ckhs - Two-Way Radio -...

1 Answer

One walkie not transmitting


Swap batteries between the radios and see if the problem moves to the other radio.

If your charger does not light up, it is not working. So your battery may not be getting fully charged. The first sign of a poorly charged, or bad battery is no transmit.

If these do not solve the problem, and your settings are identical, you may have a faulty radio. Double check your settings, and take them back to their simpliest form, shut off any special features and make your PL code be off or zero. Then try the radios, if they still don't work, you have one radio which is bad.

best regards.

Jul 14, 2012 | Two-Way Radios

1 Answer

Do i need to turn radios off to charge also what would cause them to turn off after i push the red talk button?


If the battery charge state is too low to support transmitting, most radios will power OFF when the PTT transmit key is pressed. Most radio manufacturers recommend that their radios be powered OFF for charging, but they will still charge if powered ON -- just slower.

BillB

Jan 25, 2010 | Two-Way Radios

1 Answer

I have a maxon sl55-u2 frequency radio only channels 1 to 4 work. why is this?


Only 4 channels have been programmed, you will need a programming cable to plug it into a computer and use the maxon software to programme the other channels to whatever frequency you need.

Nov 15, 2009 | Maxon Radio SL55, SP130, SP140, SP150...

2 Answers

Need a part for a maxon pm150


try phoning gb comms on 01388 778368 they repairs taxis radios

Mar 29, 2009 | Two-Way Radios

1 Answer

We have 4 T8500 - only one can talk, the other 3 only recieve.


Can you tell if the radio is actually transmitting? Is there any sound on the transmitting radio or a light inditcating that it is indeed transmitting? If not maybe the PTT button is malfunctioning. Try to use a microphone plugged into the accessory jack and see if it works. Another option is if you have a radio scanner, search the frequency range while transmitting and see if you pick up that open carrier.

Feb 24, 2009 | Motorola T8500 Two Way Radio

1 Answer

Radio Mic


Check the squelch on your radio thats not recieving. If there is a monitor button ( when pushed you will hear static) try pushing it.. then get someone to call you so you can check if you can hear them. On these radios you have 2 types of squelch....1 is called carrier squelch.... it basically opens when there is a strong enough signal. This lets you only hear strong signals and "squelch out" the distant ones and background static. The2nd. is "tone squelch" ... with your radio they are often called privacy tones. If you have 2 radios set with the same privacy tones you will only be able to hear each other... only radios that are transmitting with that privacy tone will be heard on your radio. Its a high frequency tone that can't be hear by the human ear that gets "embeded" with the transmitting signal. The recieving radio hears it and opens the squelch. So... if the radio thats rxing (recieving)your signal has its squelch set for just carrier squelch it will hear any signal thats strong enough to break the squech open.... basicaly any radio within a certain range. But if your radio (one with problem) has its squelch set for privacy tones you will not hear any other radios except the ones set with the same privacy tone.... the squelch will not open until it gets a tx signal with the right tone.... so if the txing (transmitting) radio is not using tone squelch but is using carrier squelch.... and the rxing radio is set for tone squelch... the rxing radio will not hear it. With tone (privacy tones/codes) squelch you need a tone to open the squelch and then the audio can be heard... with carrier squelch the squelch will open if ANY radio is within a certain range. Check the squelch setting on the problem radio... it could have a privacy tone set. Try pushing in the monitor button so you can hear static ( you want to hear everything including static) on both radios... tx on one radio at a time and listen if it can be heard on the other with the monitor button pushed. If you can't hear any audio when the broken one is transmitting then it COULD be the mic.... if you can hear both radios with the monitor button activated than the radios are txing and have tx audio and are working... if thats the case its the privacy tones that are the problem. Take care

Sep 12, 2007 | Garmin Rino 120 2-Way Radio

1 Answer

Maxon MCB 10 A


I'm not sure about your particular model but many CB radios use the microphone push-to-talk switch to kill the speaker while the radio is transmitting. If you don't have the correct microphone or if the cord has a broken wire it can cause the radio to have no sound. Another possibility is that the speaker is bad. There is probably an external speaker jack on the back of the radio. You could try plugging a different speaker or even an earphone in the jack to see if you get sound there.

Mar 07, 2007 | Maxon SP-100G (4 Channels) 2-Way Radio

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