Question about Maxon MCB-30 40-Channels Base CB Radio

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Ch 9 When power up always on channel 9 - how can i get it to stay on last channel used?

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Just like another post in this thread mentioned, your radio has a switch on it that, when set to the channel 9 setting will go to 9 automatically. Same with channel 19 if selected will always default to 19. Set this switch to either CB or NOR for normal operation and you will be able to select any other channel.

Posted on Jun 29, 2012

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The orange wire goes to a fuse that is always on. That's how it remembers things when it is powered down.Like the clock on a Car stereo.

Posted on Mar 11, 2008

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Hi larry, That is a normal ch 9 default on electronic channel changers. Small midlands/cobras also do that. Try taking the red/hot power wire loose and attaching it to a power source that is hot all the time. That way there will be power going to the radio with the key shut off and it should retain the last channel you were on.
Hope this is what you were looking for, let us know,, Mechanic

Posted on Feb 22, 2008

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Posted on Jan 02, 2017

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My rca p52936 will not change channels. everything else seems to work.

First would be what kind of signal are you using? Direct cable to the set or what?

If only one channel does the number on screen change when you change channel but set stays on the last channel?

Also look to see if set on the front has the "Guide Plus" logo.

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Well the CB you have should not cycle through channels like that for sure. It is not a progressive scan. Try messing with the channel 9/normal switch again. In rare occasions that switch will **** to the side just a tad. there is a PCB board inside that is responsible for the channels responding to the channel as the channel knob is turned. This board could be going haywire. If fooling with that switch does not take care of the issue then I would contact the person you got the Midland from immediately and have them get you one that works properly.

Regards, Tony

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I find that with my HDB849 I have to be very carefull with the positioning of the aerial/rabbit ears to get all the channels to (ABC, 7, 9, 10, SBS and their sub cahnnels) to recieve them at all. Also once you get all the channels it is prone to digitization or pixilation at times due to bad weather/very overcast days.

Try the for a firmware upgrade as this also solved not being able to view avis & images, listen to mp3's etc.

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2 Answers

Can this radio be used in the mountains for emergencies? What is the range of this unit? What channel should I use for an emergency?

Channel 9 is the Emergency Channel for Citizen's Band radios. You'll probably have better luck tuning to a channel that you hear conversations being conducted on to get help though. If no conversations are heard, channel 9 is the place to go.

This radio produces the FCC maximum allowed 4 watt output power with fully charged batteries. The effective range can vary from as little as 1 or 2 miles to 20 or more miles, based on elevation, antenna and surroundings. Of course, if you are in a desolate area, where other people with CB radios are 50 miles away - having even a whooping 45 mile range won't cut it. Plus, they have to have the radio on when you are calling, too. The flexible antenna provided on many CB walkie talkies is about "poorest excuse" for an antenna going. Consider purchasing a better antenna if you're going to rely on the CB for help.

The same holds true for cell phones. If you're too far away from a tower to get service, people just 5 miles away won't know that you need help, unless you find them. What do you do? Have a back up plan. Call ahead. Is cell service available? Is your carrier (Verizon, ATT, etc. supported?) Are there government agencies that monitor specific radio frequencies? What other gear should you have before starting out? You should also arrange to leave a copy of your itinerary with someone. Set up predetermined times for contacting them - this way, should a contact time be missed, they will notice that you're missing and can take appropriate action.

Be smart - be safe!

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