ICOM
Product Description
At a Glance: The Icom OPC-589 is a genuine OEM microphone conversion cable that adapts standard 8-pin round chassis plugs to 8-pin modular (RJ45) transceiver jacks. It allows you to connect premium desktop base microphones like the Icom SM-30 and SM-50 directly to mobile and compact base transceivers without cutting or rewiring cables.
When setting up a high-performance dispatch console or permanent base station around compact mobile transceivers, standard handheld fist mics can restrict operator mobility and voice clarity. The Icom OPC-589 Adapter Cable solves this by bridging the gap between modular radio front panels and studio-grade 8-pin desktop microphones.
Built with factory-molded strain relief and premium RF-shielded copper wiring, the OPC-589 preserves low-noise audio, phantom DC power delivery, and PTT signaling. It lets operators use trusted desk mics such as the SM-30, SM-50, and HM-36 across popular modular transceivers like the IC-7100, IC-2730A, ID-5100A, and IC-706 series.
Key Features & Operational Benefits
- Plug-and-Play Conversion: Converts an 8-pin round Foster-type microphone plug into an 8-pin RJ45 modular plug with zero soldering required.
- Preserves DC Phantom Power: Passes DC microphone bias voltage directly through pin connections to power internal electret and dynamic preamps on SM-series desk mics.
- Supports Up/Down & PTT Signaling: Retains full push-to-talk locking and frequency UP/DOWN stepping functions when paired with compatible microphones.
- High-Density RF Shielding: Internal conductor braiding blocks stray RF energy and alternator whine, preventing feedback hum during high-power transmissions.
- Molded Strain Relief: Rugged, flexible boot collars protect wire ends from bending stress, pull fatigue, and broken internal leads.
Technical Specifications
| Manufacturer | Icom Inc. (Genuine OEM) |
| Model / Part Number | OPC-589 |
| Input Connector (Microphone Side) | 8-Pin Round Female Jack (Foster-style socket) |
| Output Connector (Radio Side) | 8-Pin Modular RJ45 Male Plug with locking clip |
| Overall Cable Length | Approx. 10.5 inches (27 cm) tip-to-tip |
| Conductor Shielding | High-grade shielded audio line |
| Color | Black |
| Warranty | Icom 1-Year Limited Manufacturer Warranty |
Hardware Compatibility Guide
The OPC-589 connects 8-pin round microphones to transceivers using 8-pin modular microphone ports:
- Compatible Microphones: Icom SM-30, SM-50, SM-20, SM-6, HM-36, and third-party desk mics wired to standard 8-pin round Icom pinouts.
- Compatible Transceivers: Icom IC-7100, IC-7000, IC-706 / IC-706MKIIG, IC-703, IC-2730A, ID-5100A, ID-4100A, IC-2820H, IC-V8000, IC-2300H, and IC-208H.
Frequently Asked Questions
Q: Can I use the Icom SM-30 or SM-50 with an IC-7100 using this cable?
A: Yes. The OPC-589 is specifically engineered to let you plug the 8-pin round connector of the SM-30 or SM-50 into the modular RJ45 microphone jack on the IC-7100 control head.
Q: Does this adapter introduce audio hum or RF feedback?
A: No. Unlike cheap generic adapters, this genuine Icom cable uses shielded internal conductors to prevent RF ingress and maintain clean, low-noise audio transmission.
Q: Will this cable work with Kenwood or Yaesu modular transceivers?
A: No. While the physical RJ45 modular jack looks identical, Kenwood and Yaesu use different internal pinout wiring and voltage standards. This cable is wired exclusively for Icom equipment.
HiTech Wireless is an authorized dealer for Icom commercial and amateur radio systems. For compatibility questions or station cable setups, call our specialists at 888-511-5162.
