What PTT works with PRC-152 and PRC-148 radios?

The Constant Able 6-Pin NATO PTT is designed for AN/PRC-152, AN/PRC-148 (MBITR), and AN/PRC-117G radios. It requires 3.3V accessory voltage enabled and mic set to Lapel Mic in the radio menu.

Do I need an amplified PTT for Peltor Comtac headsets?

Yes, Peltor Comtac headsets use dynamic microphones which require amplification. The Constant Able PTT provides automatic impedance matching and also handles NATO vs Peltor wiring differences automatically.

What connector do Baofeng radios use?

Most Baofeng radios (UV-5R, BF-888S) use the Kenwood 2-pin K1 connector. Waterproof models like the UV-9R use a different multi-pin connector. Our configurator will match you with the correct PTT.

100+ Radios Supported Auto Impedance Matching

System Configurator

Q: What PTT do I need for Motorola APX radios?

For Motorola APX radios (APX 6000, APX 7000, APX 8000, etc.), we recommend the Constant Able PTT with M9 GCAI connector. It features auto-sensing impedance that works with both dynamic and electret microphones.

Q: What is the difference between dynamic and electret microphones?

Dynamic microphones (low impedance) are standard in military headsets like Ops-Core AMP and Peltor Comtac. They require amplification. Electret microphones (high impedance) are common in civilian headsets and most earpieces. The Constant Able PTT automatically detects and adjusts for both types.

Impedance Matching // Connector Logic

Find the perfect push-to-talk (PTT) for your radio and headset. Works with Motorola APX, Harris XL, PRC-152, PRC-148, Kenwood, Baofeng, and more. Our Constant Able™ technology automatically matches impedance for Ops-Core, Peltor Comtac, and MSA Sordin headsets.

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Headset / Earpiece

Select your primary hearing protection or earpiece to ensure we match the microphone impedance correctly.

Tech Brief: Impedance

Dynamic Mics (Low Imp): Standard for Military headsets (Ops-Core/Peltor). They require amplification.
Electret Mics (High Imp): Standard for Civilian headsets and most Earpieces.

Connector Requirement
All PTTs below require a standard U-174/U (TP-101) downlead.

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Technical Breakdown

Impedance Match: Auto
Signal Path: Standard
Connector: U-174

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Standard Option: U94 PTT

Basic push-to-talk functionality.

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Popular PTT Combinations

Motorola APX + Peltor Comtac

Constant Able M9 GCAI

Auto-sensing for APX 6000/7000/8000 with dynamic headsets

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Motorola R7/N70 + Ops-Core AMP

Constant Able M16 Mini GCAI

For APX N-Series and MOTOTRBO R7

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PRC-152/148 + Comtac

Constant Able 6-Pin NATO

Military 6-pin for AN/PRC radios

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Harris XL-200P + Any Headset

Constant Able HA2

Universal PTT for L3 Harris XL/Unity series

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Baofeng UV-5R + Earpiece

U-94 Kenwood 2-Pin

Budget-friendly PTT for ham/amateur radios

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No Headset? Speaker Mic

Modular Speaker Mic (MSM)

Rugged speaker mic for patrol & duty use

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Constant Able™ Technology

Auto-sensing impedance matching works with ANY headset. No more guessing between amplified vs non-amplified PTTs.

Made in USA

All Disco32 PTTs are designed and manufactured in the United States. Trusted by military, law enforcement, and first responders.

Expert Support

Not sure what you need? Our team has decades of experience in tactical communications. We'll help you get the right setup.

Supported Radios & Connectors

Motorola APX
APX 6000, 7000, 8000, N30, N50, N70, R7

Motorola XTS
XTS 2500, 3000, 5000, HT1000, MTS2000

L3 Harris
XL-200P, XL-185P, XG-75, P7300, P5500

Military 6-Pin
PRC-152, PRC-148 MBITR, PRC-117G

Military 19-Pin
PRC-163, PRC-167 Falcon IV

Kenwood
TK Series, NX Series, 2-Pin

Baofeng
UV-5R, BF-888S, UV-9R, UV-82

Hytera
PD702, PD782, HP600, HP700

Icom
F3, F4, V80, F1000, F2000

Vertex/Yaesu
VX-6R, VX-7R, FT-60R, EVX-S24

MotoTRBO
SL300, XPR3300, DP2400, DP4600

Mobile/EUD
iPhone, Android, USB-C, 3.5mm

Frequently Asked Questions

What PTT do I need for Motorola APX radios?

For Motorola APX radios (APX 900, 1000, 2000, 3000, 4000, 6000, 7000, 8000), we recommend the Constant Able M9 GCAI PTT. It features auto-sensing impedance technology that works with both dynamic microphones (Ops-Core, Peltor) and electret microphones (civilian headsets). For the newer APX N-Series (N30, N50, N70) and MOTOTRBO R7, use the Constant Able M16 Mini GCAI connector.

What is the difference between dynamic and electret microphones?

Dynamic microphones (low impedance) are standard in military-grade headsets like Ops-Core AMP, 3M Peltor Comtac, and MSA Sordin Mil-Spec. They produce a weaker signal and require amplification in the PTT circuit.

Electret microphones (high impedance) are common in civilian headsets like Earmor, Howard Leight, and most earpieces. They produce a stronger signal and don't require amplification.

The Constant Able PTT automatically detects which type you're using and adjusts accordingly—no manual configuration needed.

What PTT works with PRC-152 and PRC-148 military radios?

The Constant Able 6-Pin NATO PTT is designed for AN/PRC-152, AN/PRC-148 (MBITR), and AN/PRC-117G radios. It uses the standard U-329/U 6-pin connector.

Important Setup: These radios require 3.3V Accessory Voltage ON and Mic set to "Lapel Mic" in the radio menu. Without these settings, audio transmission will not function correctly.

Do Peltor Comtac headsets work with all PTTs?

Peltor Comtac headsets use dynamic microphones and require an amplified PTT. Additionally, there are two wiring standards: US NATO wiring and European "Peltor Wired".

The Constant Able PTT handles both impedance matching AND wiring differences automatically. If you have a legacy U-94 PTT with European-wired Comtacs, audio will not work—you'll need either a Constant Able or a wiring adapter.

What connector does my Baofeng UV-5R use?

The Baofeng UV-5R, BF-888S, and most standard Baofeng radios use the Kenwood 2-Pin (K1) connector. This is the same connector used by Kenwood, Wouxun, TYT, Retevis, and AnyTone radios.

Note: Waterproof models like the UV-9R, UV-9R Plus, and BF-A58 use a different multi-pin connector and require a specific PTT variant.

What is a U-174/U connector?

The U-174/U (TP-120) is the standard NATO military headset connector used on virtually all tactical headsets including Ops-Core, Peltor Comtac, MSA Sordin, and OTTO NoizeBarrier. It's a 4-pole audio plug that carries microphone, earphone, and PTT signals. All Disco32 PTTs use this connector on the headset side, making them compatible with any standard military downlead.

Can I use one PTT with multiple radios?

PTTs are specific to each radio's connector type. However, with the Constant Able system, you only need to match the radio connector—the headset side is universal. So if you have multiple radios with the same connector (e.g., two Motorola APX radios), one Constant Able PTT works with both, regardless of which headset you're using.

Still Not Sure?

Our team has years of experience with tactical comms. Send us your radio model and headset, and we'll recommend the perfect setup.

Disco32 specializes in push-to-talk (PTT) switches, tactical headset adapters, and communication accessories for military, law enforcement, first responders, and amateur radio operators. Our products are compatible with Motorola APX, Harris, Kenwood, Baofeng, Hytera, Icom, Vertex, and military AN/PRC radios. Whether you need a PTT for Ops-Core AMP, Peltor Comtac, MSA Sordin, or any U-174/U compatible headset, our configurator will match you with the right solution.