User Manual

2-7

2.7 RECEIVE FREQUENCY SIMPLEX FUNCTION

The receive frequency simplex function allows you to quickly change the transmit frequency, when

operating on a split pair (repeater/semi-duplex mode), to the receive frequency to allow direct

communications. ie/ If you are transmitting on 152.000 MHz and receiving 152.555 MHz, press FUNC

then UP to transmit on 152.555 MHz. To return to the split pair condition, you must recall the memory

channel again. This is quickly done by pressing M.UP for one step up, then back down one step with

the M.DN key.

2.8 KEYBOARD LOCKOUT FUNCTION

The keyboard can be locked out so that accidental pressing of keys does not change frequency, etc.,

unknowingly to the operator. To lock the keyboard, press FUNC then LOCK. This will disable all

keyboard functions (except keyboard unlock) in the receive mode. The DTMF function during transmit

will not be affected. To unlock the keyboard, press and hold the LOCK key for two seconds until the

display indicates "UNLOCK".

2.9 VARIABLE FREQUENCY MODE FUNCTION

To enter variable frequency mode, press RCL, 0,0,0, then ENTER. The memory channel that you

were just in will still be valid but now you can manually adjust the frequency with the M.UP, M.DN, UP

and

keys. The

and

keys will make the frequency count up or down in steps of 2.5 kHz. The

M.UP and M.DN keys will make the frequency count up or down in steps of 1 MHz. You can not

change the label. The frequency in this mode can not be stored in memory. To exit this mode, recall

one of the 120 memory channels (ie. RCL, 0,0,1). Variable frequency mode is disabled when the

internal entry disable jumper is set.

2.10 LED DISPLAY VARIABLE DIMMING MODE

1. With the transceiver in normal operating mode press the

keys to increase or

decrease the intensity of the LED display.

2. Once maximum intensity of the display is acheived, the

key no longer functions.

Conversely once minimum intensity is reached, the DN key ceases to function.

2.11 90 SECOND TRANSMITTER TIME OUT FEATURE

A selectable 90 second transmitter time out feature is provided to prevent accidental continuous

transmission in the event of a faulty PTT switch. With this feature enabled the transceiver will stop

transmitting after the PTT is engaged continuously for 90 seconds. The timer is reset by releasing

then re-engaging the PTT switch.

Press the FUNC then the M.UP key. Use the M.UP and M.DN keys to select 90 SEC, which

enables the feature, or NONE which disables it.

2.12 QUICK GUARD PROGRAMMING FEATURE

A quick download of any of the 120 memory positions to either of the guard memory positions can be

accomplished. Select the memory position whose contents you desire to download to a guard

memory. Select either GD1 or GD2 memory channel as desired. Press FUNC then 7. The guard

memory channel will now contain all the same information as the selected memory position. This

feature is disabled when guard jumper (J15, pins 1&2) on the MCU board is removed.