Important note:  The following information allows the user to program receive and transmit frequencies into the radio.  The user of this information assumes all legal consequences of transmitting on frequencies not allocated to them for their use, even if by accident.  Some radios may need proper realignment in order to perform on the programmed frequencies or in order to operate at best performance. A qualified technician using proper test equipment should perform any required realignment.

Frequency Information:

The frequency information to be programmed into the radio must be obtained by the user.  The frequencies given in the examples listed in the Programming instructions are not allocated frequencies.  

Programming Preparations:

Items required:

1. One large tip Philips head screwdriver.
2. One pair of needle nose pliers or a pair of tweezers.
3. A power cord connected to a 12vdc source.

Getting the radio into the programming mode:

1. Disconnected the radio from its DC supply until the disassembly is complete.  Turn the radio on to drain any remaining charged voltage.
2. Using the Philips head screwdriver remove all five screws located on the bottom case of the radio.
3. Carefully remove the bottom case and set it aside.
4. Carefully remove the top case pulling up from the rear of the radio.  Some UHF mobiles may have a short two-wire lead that connects the speaker, mounted to the top case, to the inside of the radio.  Most do not have internal speakers as it causes unwanted noise known as microphonics or a howling in the speaker.
5. Locate the programming jumper labeled J401 in the middle of the front row of pins of the microprocessor (the largest chip or Integrate Circuit, IC in the radio).  The jumper should be cut in two pieces, as it will prevent the 16 channel radios from transmitting when the jumper is connected at both ends when in the user mode.   If the jumper is missing it will be necessary to short pin 12 of the microprocessor and then continue to step 6, 7 skip step 8, then go to step 9.
6. Connect the radio to a properly fused (7 amp max) 12vdc supply.
7. Turn the radio on. 
8. Using the tweezers or needle nose pliers short both ends of the jumper.
9. Momentarily select the Pro. Pri. (Program Priority) key (the display should start flashing), then momentarily select the 0 or 10 key (and the display should go blank.  The radio will not be in the programming mode until the display goes blank.  After the display is blank you can remove the short across jumper J401.

You will need to make a list of frequencies has been written in the sequence as listed below:

The tone chart below is a list of available tones that the radio is capable of receiving and transmitting.  Use the two digit tone code to indicate the tone frequency that is needed for the channel:   Ex. – Desired tone frequency = 127.3Hz, use tone code 19.

When your list is complete you will have the information in proper sequence so that program entry errors will be minimized.

Programming steps:

Example 1: Simplex - The receive and transmit frequency are the same with no CTCSS tone.

1. When the display is blank enter the following digits, pressing each key momentarily:

462625  00 00

2. Momentarily press the ENT key.
3. Momentarily enter the channel number that you want the frequency data to be saved to. Channels 1 through 10 are a single keystroke. Channels 11 though 16 require a two digit entry – when one is selected it goes to the left display LED waiting approximately 3 to 4 seconds for a second digit. If no other digits are entered the data will go into channel 1. 

To review the channel for proper frequency and tone data select the MAN or manual key and then the channel number you want to check.

What do the digits mean?

The first six are the receive frequency.

The next two tells the microprocessor that the transmit frequency is the same as the receiver.

The last two tells the microprocessor that no tone is required for receive or transmit.

Example 2: Half Duplex - The transmit frequency is different from the receiver and a tone of 100Hz is required for receive and transmit.

1. When the display is blank enter the following digits, pressing each key momentarily:

462625  80 12 12  467625

2. Momentarily press the ENT key.
3. Momentarily enter the channel number that you want the frequency data to be saved to. Channels 1 through 10 are a single keystroke. Channels 11 though 16 require a two digit entry – when one is selected it goes to the left display LED waiting approximately 3 to 4 seconds for a second digit. If no other digits are entered the data will go into channel 1. 

To review the channel for proper frequency and tone data select the MAN or manual key and then the channel number you want to check.

What do the digits mean?

The first six are the receive frequency.

The next two (7^th and 8^th digits) tells the microprocessor that the transmit frequency is going to be different than the receiver frequency.

The next two (9^th and 10^th digits) tells the microprocessor that a CTCSS tone is required for receive at a frequency of 100.0Hz (Tone Code 12).

The next two (11^th and 12^th digits) tells the microprocessor that a CTCSS tone is required for transmit at a frequency of 100.0Hz (Tone Code 12).

The last six are the transmit frequency.

Example 3:  Receive only  - the transmit frequency is disabled to prevent accidental keying of the microphone on a frequency not allocated to the user. 

1. When the display is blank enter the following digits, pressing each key momentarily:

464600  04 00

2. Momentarily press the ENT key.
3. Momentarily enter the channel number that you want the frequency data to be saved to. Channels 1 through 10 are a single keystroke. Channels 11 though 16 require a two digit entry – when one is selected it goes to the left display LED waiting approximately 3 to 4 seconds for a second digit. If no other digits are entered the data will go into channel 1. 

To review the channel for proper frequency and tone data select the MAN or manual key and then the channel number you want to check.

What do the digits mean?

The first six are the receive frequency.

The next two tells the microprocessor that the transmitter is disabled.

The last two tells the microprocessor that no tone is required for the receiver.

Example 4:  Transmit tone is different than the receiver

1. When the display is blank enter the following digits, pressing each key momentarily:

462625 80 19 12 467625 

2. Momentarily press the ENT key.
3. Momentarily enter the channel number that you want the frequency data to be saved to. Channels 1 through 10 are a single keystroke. Channels 11 though 16 require a two digit entry – when one is selected it goes to the left display LED waiting approximately 3 to 4 seconds for a second digit. If no other digits are entered the data will go into channel 1. 

To review the channel for proper frequency and tone data select the MAN or manual key and then the channel number you want to check.

Deleting a channel from memory:

Important note:  It is necessary to have all unused channels deleted from memory so that the radio operates at maximum performance.

While the display is blank:

1. Momentarily select the DEL or Delete key.
2. Momentarily select the ENT or Enter key.

3.      Enter the channel number to be deleted.

Features Programming

The features listed below affect all of the programmed channels.

Scan Delay

The amount of time the radio will stay on a received channel, after the signal goes away, before resuming scan.

Select one number from the chart.