MIDLAND 575P GMRS Radio Instruction Manual

MIDLAND 575P GMRS Radio

Specifications

• Wide Band receiver 400-480MHZ
• Transmitter GMRS frequency
• Large screen display, rich display content
• Maximum programmable 199 channels
• Three power levels available: HI, M, LO
• Continuous tone coded squelch system: CTCSS 50 or digital code squelch DCS104
• Reject excess calls from other stations
• Wide and narrow band are optional
• Frequency step: 5.0k/6.25k/12.5k/25k
• Repeater function
• Call tone optional
• Busy channel lockout function

Product Usage Instructions

Unpacking and Device Inspection

Carefully remove the walkie-talkie from the box.

Check that the following items are present in the box:

• Radio Fixed base unit – 1 pc
• Microphone – 1 pc
• Microphone base – 1 pc
• User Manual – 1 pc
• DC lead Screw bag pack – 1 pc
• Complementary nameplate model labels – 1 pc

If any items are lost or damaged, contact the delivery person immediately.

Structure and Function Schematic

Front View of Mainframe:

Details of various interfaces and functions on the front side of the mainframe.

Rear View of Mainframe:

Description of interfaces and components located on the rear side of the mainframe.

Operation Description

Frequency Mode and GMRS Channel Mode Switching:

To switch between GMRS channel mode and VFO mode, press the Mode button on the panel or the ENR key on the hand-mic.

Frequency Mode Frequency Step Selection:

Use numeric keys to set the frequency directly or press the * key to select the frequency step (5k, 6.25k, 12.5k, 25k).

Memory Frequencies:

In frequency mode, to memorize a frequency, press the memory key followed by MX. Use M1/M2/M3 to record and quickly switch between frequencies.

Scanning Channel Scanning:

In Full Scan mode, all channels are scanned at a step frequency. In master channel scan mode, only the master channel is scanned.

Dual Frequency Standby:

To set dual frequency standby, press the hand-mic * key under any channel.

Frequently Asked Questions

Q: How do I reset the device to its initial state?

A: Press the Cancel key to return to the initial state from any other states or modes.

Q: Can I use this radio transmitter in narrow band mode?

A: Yes, wide and narrow band modes are optional and can be selected based on your preference.

Introduction

Thank you for purchasing CB radio. In order to use your radio in the best condition, please read this manual in detail.GMRS575P is a small and easy to operate car radio transmitter with good performance. The simple operating functions on the panel make it easy for customers to get started quickly.

Unpacking and device inspection

Please take the walkie-talkie carefully from the box.We recommend that you check that the following items are present in the box before discarding the packaging material.

Random Accessory List

pc

| ****

1

If any items are lost or damaged during handling, please submit a claim to the delivery person immediately.

The machine has the following main features

• Wide Band receiver 400-480MHZ （Transmitter GMRS frequency）
• Large screen display, the display content is rich, easy to understand
• Maximum programmable 199 channels
• Three power levels available：HI M LO
• Continuous tone coded squelch system（CTCSS 50）or digital code squelch（DCS104）Reject excess calls from other stations.
• Wide and narrow band are optional
• Frequency step（5.0k/6.25k/12.5k/25k）
• Repeater function
• Call tone optional
• Busy channel lockout function

Structure and Function Schematic

Front view of mainframe

Rear View of Mainframe

Microphone Schematic

Under normal circumstances, press any key, there will be a confirmation tone.When the machine is able to execute the command of the key, there will be a “B” response；When the machine fails to execute a key command, it responds with a “DU” response; The function of the “Cancel” key is to return to the initial state from the various states.

Operation description

Power on
Connect the machine to the boat’s power supply, after checking that there is no error, long press the power/volume knob, at this time to enter the main interface, indicating that it has been successfully powered on.Subsequently,if the power is abnormally disconnected, the power can be turned on automatically again.

Switching channel

1. Rotary encoder for channel switching
2. Channel plus/minus via hand-mic plus/minus keys
3. Setting the channel by using the hand-mic numeric keys

Frequency mode and GMRS channel mode switching

Press the “Mode” button on the panel to switch between GMRS channel mode and VFO mode.Press the “ENR” key on the hand-mic to switch between GMRS channel mode and VFO mode.

Frequency mode frequency step selection
Press the numeric keys to set the frequency directly, or press the “*” key to enter the frequency step setting menu (5k, 6.25k, 12.5k, 25k steps).

Memory frequencies
In the frequency mode in the frequency state you want to memorize, press the memory key display prompts “press MX to memorize the frequency”, at this time press M1/M2/M3 to record the current frequency, a short press on M1/M2/M3 can be quickly switched to the recording frequency.

Scanning
Channel scanning by scan: If the Scan Mode is Full Scan, all channels are scanned (at a step frequency); If the scan mode is master channel scan, the master channel is scanned.

Squelch Setting
Short press the “Squelch” key to set the squelch level, press the plus/minus key to adjust the level.Quick adjustments can also be made with the 0-9 numeric keys.When the setting is complete, you can press the “Cancel” button or press the “Squelch” button again to exit the setting.

Backlight Brightness Setting
Short press the “Brightness” button to set the backlight brightness level.Press the plus/minus key to adjust the level, or you can make quick adjustments with the 0-9 number keys.When the setting is complete, you can press the “Cancel” button or press the “Squelch” button again to exit the setting.

Call function
Call Press the Select Call key to make a Call. 1-5 different Call tones can be selected.

Menu Options
In standby mode, short press the encoder to enter the menu

1. Transmit power (low/medium/high)
2. Dual frequency standby
3. Repeater switch (15-22 channels)
4. Bandwidth (wideband/narrowband)
5. Subsonic（OFF/CTC/CDC）
6. BCLO (On/Off)
7. Key tone (on/off)
8. Call tone selection (0-5)
9. TOT 0-300S

Extended Channel Frequency Editor

• If you need to add an extended channel, you need to switch to the VFO mode to store the frequency point function. The maximum number of extended channels is 199.
• If the current frequency is extended frequency, press the hand-mic memory key to set the channel(Channels 1-30 are not editable for the main channel, only 031-199 can be set, beyond the range can not be entered).
• If the current channel is an extended channel, press the microphone # key to select Delete.

Channel name editing (length 8)：
Press MEMORY key to set the channel name, turn the knob (or hand-mic plus or minus) to modify the character, press ENCODER or MODE to switch to the next character, and press PTT to end the edit.

Dual frequency standby
Under any channel, press the hand-mic * key to set the dual-frequency standby channel,Press and hold the SCAN button to enter the dual-frequency standby screen.The main channel can be switched between each other through the hand- mic # key.

Channel Frequency Tables

Channel

Number

| GMRS Frequency

MHz

| Fixed

Privacy

| Band Width| TX Power
---|---|---|---|---
1| 462.5625|  | Narrow or Wide| Low
2| 462.5875|  | Narrow or Wide| Low
3| 462.6125|  | Narrow or Wide| Low
4| 462.6375|  | Narrow or Wide| Low
5| 462.6625|  | Narrow or Wide| Low
6| 462.6875|  | Narrow or Wide| Low
7| 462.7125|  | Narrow or Wide| Low
8| 467.5625|  | Narrow| RX
9| 467.5875|  | Narrow| RX
10| 467.6125|  | Narrow| RX
11| 467.6375|  | Narrow| RX
12| 467.6625|  | Narrow| RX
13| 467.6875|  | Narrow| RX
14| 467.7125|  | Narrow| RX
15| 462.5500|  | Narrow or Wide| High/Low
16| 462.5750|  | Narrow or Wide| High/Low
17| 462.6000|  | Narrow or Wide| High/Low
18| 462.6250|  | Narrow or Wide| High/Low
19| 462.6500|  | Narrow or Wide| High/Low
20| 462.6750|  | Narrow or Wide| High/Low
21| 462.7000|  | Narrow or Wide| High/Low
22| 462.7250|  | Narrow or Wide| High/Low
23| 462.5625|  | Narrow or Wide| High/Low
24| 462.6125|  | Narrow or Wide| High/Low
25| 462.6625|  | Narrow or Wide| High/Low
26| 462.7125|  | Narrow or Wide| High/Low
27| 462.55|  | Narrow or Wide| High/Low
28| 462.600|  | Narrow or Wide| High/Low
29| 462.650|  | Narrow or Wide| High/Low
30| 462.700|  | Narrow or Wide| High/Low

CTCSS Table

DCS Table

No| code| No| code| No| code| No| code| No| code| No| code
---|---|---|---|---|---|---|---|---|---|---|---
1| 023| 21| 125| 41| 245| 61| 356| 81| 506| 101| 732
2| 025| 22| 131| 42| 246| 62| 364| 82| 516| 102| 734
3| 026| 23| 132| 43| 251| 63| 365| 83| 523| 103| 743
4| 031| 24| 134| 44| 252| 64| 371| 84| 526| 104| 754
5| 032| 25| 143| 45| 255| 65| 411| 85| 532|  |
6| 036| 26| 145| 46| 261| 66| 412| 86| 546|  |
7| 043| 27| 152| 47| 263| 67| 413| 87| 565|  |
8| 047| 28| 155| 48| 265| 68| 423| 88| 606|  |
9| 051| 29| 156| 49| 266| 69| 431| 89| 612|  |
10| 053| 30| 162| 50| 271| 70| 432| 90| 624|  |
11| 054| 31| 165| 51| 274| 71| 445| 91| 627|  |
12| 065| 32| 172| 52| 306| 72| 446| 92| 631|  |
13| 071| 33| 174| 53| 311| 73| 452| 93| 632|  |
14| 072| 34| 205| 54| 315| 74| 454| 94| 654|  |
15| 073| 35| 212| 55| 325| 75| 455| 95| 662|  |
16| 074| 36| 223| 56| 331| 76| 462| 96| 664|  |
---|---|---|---|---|---|---|---|---|---|---|---
17| 114| 37| 225| 57| 332| 77| 464| 97| 703|  |
18| 115| 38| 226| 58| 343| 78| 465| 98| 712|  |
19| 116| 39| 243| 59| 346| 79| 466| 99| 723|  |
20| 122| 40| 244| 60| 351| 80| 503| 100| 731|  |

Main parameters

Frequency range ：   Receiver 400.000-480.000MHZ        Transmitter:GMRS frequency

Channel spacing ： 5KHz、6.25KHz、12.5KHz、25KHz

Supply Voltage ： 13.8V±15%

Transmitter| Receiver
output power| HI≥50W

M≈20W LO≈5W

| Reference sensitivity| 400-420≤0.30uV

420-470≤0.25uV

Carrier frequency

tolerance

| ≤2.5PPM| Threshold squelch on

sensitivity(ASQ2)

| ≤0.20uV
Modulation

limiting

| ≤5Khz| Audio Harmonic

Distortion

| ≤7%
Dissipation current| ≤10A| Modulated Receive

Bandwidth

| ≥2*5khz

Warning Statements

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:

1. This device may not cause harmful interference, and
2. this device must accept any interference received, including interference that may cause undesired operation.

Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment shall be installed and operated with minimum distance
114 cm between the radiator & body.

WARNING:
MODIFICATION OF THIS DEVICE TO RECEIVE CELLULAR RADIOTELEPHONE SERVICE SIGNALS IS PROHIBITED UNDER FCC RULES AND FEDERAL LAW.

Licensing Information

Use our radio in USA is subject to the rules & regulations of FCC. Changes or modifications not expressly approved by our may void the user authority granted by the FCC to operate this radio and should not be made. To comply with FCC requirements, transmitter adjustments should be made only by or under the supervision of a person certified as technically qualified to perform transmitter maintenance and repairs in the private land mobile and fixed services as certified by an organization representative of the user of those services. Replacement of any transmitter component (crystal, semiconductor, etc) not authorized by the FCC equipment authorization for this radio could violate FCC rules.

Note: Use of this radio outside the country where it was intended to be distributed is subject to government regulations and may be prohibited.

Important: Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate this device. Your radio is set up to transmit a regulated signal on an assigned frequency. It is against the law to alter or adjust the settings inside the radio to exceed those limitations. Any adjustments to your radio must be made by qualified technicians.

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