Products
Product name: Acoustic Tube Earphone for Walkie Talkie GP-328 Plug Two Way Radio Earphone
Brand: Earphonic
MOQ: 5 PCS
OEM/ODM: Yes
Compatible brand: Motorola, Hytera, Kenwood, Sepura, Icom, Vertex and so on
Product position: Walkie Talkie Earphone
Product Features:
Single-wire PTT Air tube walkie-talkie headset for Two-Way Radios
1. Plug Type: GP-328
2. Transparent tube earphone microphone for interphone;
3. You can listen and speak clearly without holding a walkie-talkie.
4. Transparent tube SPK, good concealment effect, is conducive to the confidentiality of communication;
5. This GP328 connector is compatible with Motorola walkie‑talkies. It features a threaded locking design that prevents accidental disconnection and ensures uninterrupted communication;
6. cable length:
1).Air tube cable: 35 CM
2).Main cable length: 95CM
Microphone Parameters:
| Electrical Parameters of The microphone | |
| Sensitivity: | -36dB≦S≦-32dB, At f=1kHz,S.P.L=1Pa,0dB=1V/Pa; |
| Output impedance: | Zout=2.2KΩ,At f=1kHz |
| Current Consumption: | IDss(Max)=500µA, At Vs=2.0V,RL=2.2KΩ |
| Directivity: | Omni directional |
| Signal to Noise Ratio: | S/N(Min)=55dB,At S:(f=1KHz.S.P.L=1Pa),N:(A-Weighted curve) |
| Decreasing Voltage: | (ΔS-VS)Max=-3dB,At Vs Reduces from 2.0 to 1.0 |
| Operating voltage: | 1≦V≦10; |
| Maximum input S.P.L: | 110dB,At f=1kHz,THD<1% |
Speaker Parameters:
| Electrical Parameters of Speaker | |
| Impedance: | 32Ω±5Ω; |
| Resonance Frequency: | 350Hz ±20% |
| Intelligent degree: | 115±3dB At 1000 Hz At 0.179V |
| Rated Power: | Rated Power Input 10mW, Max Power Input 15mW |
| Frequency scope: | 200HZ—20KHZ At 0.179 V |
| Ruzzes&Rattles: | Clear sound, no noise At 0.25V(50HZ-3KHZ) |
| Distortion: | Less Than 5% at 1500Hz |
| Polarity: | Positive Electrode,When an instantaneous DC voltage of 0.2V is applied to the positive electrode, causing the voice coil to move forward, the input terminal connected to the positive electrode is the "+" pole |
| Flux Density: | ±15% Guass (Surface) |
| Air Tube Shell Diameter: | Φ7.1mm±0.01mm; |
PTT Button:
Trigger Method: Push type (with feedback damping)
Lifespan: ≥ 100,000 presses
Wire Specifications:
Material: PU wear-resistant line
Length: 1.2m (regular) / 0.8m (compact)
Wearing style: Single earhook (left/right ear adjustable)
Certification Standards: Passed [CE/RoHS] certification, in line with [EARPHONIC] accessories quality standards.
Usage scenarios:
1.Public Safety & Law Enforcement
2.Business Services & Scheduling
3.Outdoor work and adventure
4.Property Management & Coordination
After-sales and service:
Warranty: 3-6 months.
Technical support: Provide [inspection video / remote after-sales service], 24-hour customer service to respond to interface adaptation problems.
Compatible Model :
|
Brand |
Connectors |
|
Motorola |
R7, M1, M2, M3, M4, M5, M6, M7, M8, M9, CLP, S1, DLR110 |
|
Hytera |
M1, M4, M5, M6, H1, H2, H3, TC700 |
|
Kenwood |
K1, K2, K3, K4 |
|
Speura |
Speura |
|
Icom |
S1, S3, S6, S6-WP, S8, S9 |
|
Vertex |
S1, Y1, Y4, Y5, Y6 |

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Xiamen Yuhong Export & Import Co., Ltd. was founded in 2023 with its independent brand LSENG. We specialize in providing one-stop solution for walkie-talkie accessories, focusing on the R&D and supply of high-quality walkie-talkie microphones and headsets. Our product portfolio covers walkie-talkie headsets, external speakers, wireless Bluetooth accessories and other supporting accessories. Tailored for multiple industry scenarios, our products consistently deliver outstanding audio performance.
Email : chris@accessoriesradio.com
Address: Address: 215-34, 2/F, Sihai Building, Fanghu West Rd, Huli Dist, Xiamen, Fujian, China Post Code:361006
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