Midland Radio 75-440 user manual Channel selection, Receiving, Monitor Button

75-440 User manual

Channel selection

Each channel is identified by 2 numeric digits. The FCC programmed into your radio as shown in the table below. radios.

assigned GMRS channel frequencies are Channels 1 through 7 are shared with FRS

Channel	Freq. MHz.	Channel	Freq. MHz.	Channel	Freq. MHz.
(FRS Ch.)				(Duplex)	Tx/Rx
1	462.5625	8	462.5750	16	467/462.5750
2	462.5875	9	462.6250	17	467/462.6250
3	462.6125	10 *	462.6750	18	467/462.6750
4	462.6375	11	462.5500	19	467/462.5500
5	462.6625	12	462.6000	20	467/462.6000
6	462.6875	13	462.6500	21	467/462.6500
7	462.7125	14	462.7000	22	467/462.7000
		15	462.7250	23	467/462.7250

*GMRS Emergency Channel (10) 462.675 MHz. To select a channel:

1) Press the key to increase the channel number or the key to decrease it.

Receiving

Your radio can be programmed to work, channel by channel, in “Open traffic” or “GROUP MODE (CTCSS/DCS)”. Group mode prevents other users of a channel from being heard on your radio. See “Setting Group Mode Codes” for programming instructions.

•OPEN TRAFFIC: in this case you will hear all communication which will be transmitted on the selected channel. When a message is received your squelch will un-mute, you will see the status LED glowing green and you will hear the message.

•GROUP MODE:

•CTCSS/DCS (Continuous Tone Code Squelch System / Digital Coded Squelch): are systems which use particular TX signaling as an access “key” to work a repeater (encoder) or to unlock the party’s signaling sensitive squelch. This last condition allows more radio networks to share the same frequency. In this case you will receive only messages coming from parties sending a proper TX signaling. During “CTCSS/DCS” operation, the radio may be set-up so that the appropriate CTCSS/DCS decoder enables the speaker.

,CTCSS/DCS If more than one station is transmitting at the same time, this will cause interference! Do not transmit if the status LED is glowing. Wait until the channel is clear before transmitting.

Monitor Button

The Monitor button can enable or disable “GROUP MODE (CTCSS/DCS)” if programmed for that channel.

1)To enable “GROUP MODE”. Press and release the“MON” button: “SAT” icon is displayed. A Sub Audible Tone mutes your speaker.

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