Pioneer FM1200 user manual Select Frequency, Select Ctcss tone, Tone squelch, Select Step Size

1. Select Frequency

The transceiver operates in one of three modes. Using the G button you may select between VCO and Memory mode. The third mode is the Priority Channel which may be switched on and off with the F key.

VCO mode

In VCO mode any frequency that complies with the selected step size (4) may be entered using the number keys on the keypad. The transceiver automatically rounds off the frequency to a valid entry. For example, of you want to listen at 435.012.500 MHz, at a step size of 12.5 kHz, all you need to do is enter ‘501’:

435.---.--- → 435.0--.--- → 435.012.500

If a step size of 25kHz is used, entering '501' will cause the transceiver to round off to 435.000.000.

Memory mode

Starting from VCO mode up to 100 preset frequencies per bank may be stored in memory, see Heading 5. These frequencies may be selected when in Memory mode while it is also possible to assign names to channel frequencies. If no frequency has been assigned to the selected channel the transceiver produces an error beep and ignores the number entered.

Priority Channel mode

Provided a frequency has been assigned to the Priority Channel (see Heading 6), this feature allows you to change to this frequency at the flick of a switch. The Calling Channel may be instantly selected by pressing the F key.

2. Select CTCSS tone

It may be undesirable for every transmission to be heard on a certain frequency. A system called CTCSS is therefore used to pass only those transmissions containing a sub-audible tone of a specific frequency. In the receiver a CTCSS decoder is used to open the squelch and make the transmission (speech) audible when a valid CTCSS tone is detected.

The frequency of the CTCSS tone may be selected as follows:

	Display:
- Press H	( Select Function )
- Press 3	( TX CT:	**)

The lowest frequency is 67.0 Hz, the highest,

250.3Hz. The quasi-value 'None' is available to disable CTCSS. Separate CTCSS frequencies may be used for TX and RX

3. Tone squelch

The squelch may be remain closed until a valid ZVEI 5-tone code is received. It is also possible to

transmit a ZVEI 5-tone sequence at the start of every transmission.

Activate:

The tone squelch is activated by pressing the E key. When receiving, the yellow LED lights. When transmitting, the symbol 'T' appears behind the frequency.

Adjust:

The code may be set as follows:

	Display:
- Press H	( Select Function )
- Press E	( RX:	)

Now set the tone for the squelch. The tone code has to be entered using the number keys. If a number flashes, this indicates a DTMF tone.

- Press H ( TX: )

Now set the tone to be transmitted.

1750 Hz tone burst

A tone burst is transmitted by pressing the PTT and Squelch Defeat buttons at the same time. The frequency of the tone burst may be adjusted in the Audio menu.

4. Select Step Size

	Display:
- Press H	( Select Function )
- Press 8	( Step size: ** )

The desired step size is selected by pressing the 0 and # keys (← or →). Confirm your selection by pressing any other key.

5. Store favourite channels

Up to 100 favourite channels per bank may be pre-set in the transceiver. A channel is stored as follows:

	Display:
- Select VCO mode	(43*.***.*** )

- Enter the desired frequency and choose SHIFT and/or CTCSS if required

- Press H	(Select Function )
- Press G	(Store in: xx)

-Select a number, if number has an arrow in front of it, it has been taken for another frequency. This is replaced.

(Store in: ￿xx)

-Press H

-If desired, give the channel a name.

(Name: )

See Heading 10 for text entry. - Press H again

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