How do you put frequencies on 2-way truck radio's?

Question

Like a CB but you need to have freqencies

It is a maxon sm-4150m two way radio

Answer 1

HMM-M

The specific kind of radio you have in mind was
not mentioned and as a result i cannot give you
a particular answer.

Radios for trucks (commercial) come in 3 general
categories:
30 - 50 Mhz
150 - 170 Mhz
450 - 470 Mhz

Recently a new series of 800/900 Mhz radio units
have also appeared on the market for use in dense
metro areas where long distance coverage is not
such a demanding issue.

All of those radios have a control panel either mounted on the front or mounted remotely. On the control panel, the
minimum amount of control knobs would be:
on/off - level Volume
on/off - level Squelch
(these radios do not have a frequency or channel
selector switch)

Some radios have a channel selector switch on the
control panel. Those radios may have that selector
switch connected to a small number of crystal channel
elements (which are special ordered for the particular
frequencies the radio is to operate on) or the switch
may control circuitry into which the desired frequencies
of operation have been programmed by a licensed technician.

In any event, you must first take the radio to a competant commercial radio supplier and provide them with the frequencies you need the radio to operate on. They will ask to see your business radio license authorization to verify that you are authorized to use that (or those) frequencies, before they begin work. And, of course, the radio you have must be capable of working on those frequencies. In addition to that you will need a cabling package to connect the radio to your battery and control box, or power supply. And, you will need a base station or mobile antenna with feed line. i assume you already have a mike and suitable cord.

If you will not be transmitting, just listening, I recommend you trash the whole idea and get a hand held programmable scanner. Several kinds of equipment are on the market for that purpose. The primary factor you need to consider is cost and frequency coverage. Get what you need and can afford.
operation
control panel

Answer 2

The newer radios have channels programmed by a computer. You need the correct software and cable to do this. The next older radios were programmed by a special programmer and an EEPROM. Before that a diode matrix in the radio was used. Before that, the radio has individual crystals for each channel. Take your pick.

In any case, you can't just use any frequency in a truck radio that is not a CB. You would need a license for the specific frequency you are using.

Answer 3

Your question is too vague, We need to know the Type/Model/Brand etc. to give you specific instructions.

However Generally speaking, you simply add extra chrystals .
If it's a Digital Synthesized type PLL. You simply program in the new Freq's.

I would suggest going to the Radio Manufacturer's Website, and looking for the Support area.

Answer 4

How did you take care of that with the diesel misfueling gadget suited to the invention? you may have been very desperate. With intense tech injectors and something of the gadget that's no longer your suited day ever.