From: marttanen@ds04.dco.ntc.nokia.com ( Kari 'Kama' Marttanen)
Subject: Extra functions for Standard C528/520
Organization: Nokia Data Communications
Date: Fri, 21 Aug 1992 21:45:42 GMT

           EXTRA FUNCTIONS FOR THE STANDARD C520/528
           -----------------------------------------

1). ADDITIONAL FUNCTIONS WHILST IN "SET MODE" 

    While holding the [FUNC] button press the [0/SET SB] button to enter
    set mode. (See Section 15 in manual).
    Whilst still in set mode the following btttons can be pressed, together
    with the [FUNC] button, to provide the these functions

BUTTON          FUNCTION
------          --------

[3/PO]          Changes band in use in extended coverage mode (UHF Only)
                i.e. 300 MHz / 400 MHz / 800 MHz / 900 MHz

[4/FL DM]       Displays a "." between 2nd & 3rd Digit. What else it does
                is a mystery, if anyone knows please let me know.

[6/STEP]        Toggles the tunning steps on the knob on top whilst [FUNC]
                is depressed, between 1MHz and 0.1 MHz.

[8/RPT]         Enables / Disables Cross band talk through mode. When Enabled
                a "." appears to the top right of the memory number position.

[9/REV]         Toggles UP and DOWN buttons between the normal steps and
                10 MHz steps.

[DWN/* PS]      Enter cloning mode. Transfers all memory data between
                2 x  C520/528`s. Tune both radios to the same frequency on one
                of the bands. Enter cloning mode on both radios. Press PTT on 
                hhe radio that contains the memory data, A series of DTMF
                tone will be heard for approx 2 minutes. The receiving radio`s
                memories will now be identical to the transmitting radio.


2). EXTRA MEMORY FUNCTIONS, 40 MEMORY CHANNELS or SEPARATE TX/RX FREQ`S

    Although the standard manual states that 20 memories are available 
    split between VHF and UHF bands, in fact there are 2 memory channels
    for each memory number on the VHF and UHF bands. These can be used in 
    2 ways. One way is to double the number of simplex channels availible,
    another is to provide programable RX and TX frequencies for each memory
    number.

    a)  PROGRAMMING SEPARATE RX & TX FREQUENCIES IN ONE MEMORY LOCATION

        1. In VFO mode select your RX frequency
        2. Press [FUNC] and [V/M ENT] buttons together
        3. Press the memory number to be programmed
        4. Press [V/M ENT] button to return to VFO mode
        5. Select your TX frequency.
        6. Press [V/M ENT] and [FUNC] buttons together
        7. Press [FUNC] button together with the memory number to program

        "+-" Will appear in the repeater shift display to indicate that the
        memory channel is now in split frequency mode. Once a memory location
        has been put into split frequency mode it cannot be changed back to a 
        simplex memory unless it is programmed as an extra channel (see below)
        or a RESET is carried out. 
        Pressing [FUNC] and [9/REV] will cause the RX and TX frequencies to be
        swapped.

     b) PROGRAMMING EXTRA MEMORY CHANNELS, EXTENDS TO 40 MEMORIES.

        Program the first 10 memories on each band as per the manual. To
        program the additional 10 memories on each band follow the instructions
        below.

        1. In VFO mode select the frequency required.
        2. Press [FUNC] and [V/M ENT] buttons together.  _
        3. Press [FUNC] and [A/CL] Buttons together. (an M will be displayed)
        4. Press the memory number to be programmed

        To recall these extra memories. Either use the rotary tunning control
        in memory mode, which will now cycle through all programmed memories.
        Or enter memory mode and press [FUNC] and [A/CL] together and the bar
        will appear above "M" indicator as when it was programmed, pressing 
        buttons 0 to 9 will then recall the extended channels.
        The extended memory channels can have repeater shifts and CTCSS tones
        programmed in to them in the normal way BUT the value of the repeater
        ofset and the frequency of the CTCSS tone will be the same for both of
        the channels stored in one memory location. i.e memory 1 and -1 will
        both have the same repeater ofset but if the ofset is not activated on
        channel -1 then it can be used as a simplex channel.

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