Tkm-707 Mods: Kenwood

The Kenwood TK-M707 is a popular amateur radio transceiver known for its robust features and reliability. While it's a great radio out of the box, many enthusiasts enjoy modifying and customizing their equipment to enhance performance, add new features, or simply to personalize their radio. Here are some common mods for the Kenwood TK-M707:

Below is an extensive guide to the most common frequency expansions, performance tweaks, and essential circuit restoration techniques for the Kenwood TKM-707. 1. General Frequency Expansion (MARS/CAP & Ham Band Tx) Kenwood Tkm-707 Mods

Open the radio up and locate jumper JP5 on the main control board (near the front panel ribbon cable). On most units, removing this jumper opens the TX from 1.6 MHz to 24 MHz continuous (some later models require a diode matrix change). The Kenwood TK-M707 is a popular amateur radio

Before undertaking any modification, it is crucial to understand the significant legal and technical risks involved. Many listed modifications can make the radio illegal to operate on certain frequencies without the proper license, as the radio's frequency range may be altered from its original marine-band specifications. Before undertaking any modification, it is crucial to

: While the TKM-707 is a single-piece unit, some users adapt its mounting brackets or utilize third-party external speakers (via the 4Ω external jack) to improve ergonomics in tight shack spaces or vehicle cabins. Technical Specifications for Modding Current Requirement 30A at 13.6V DC for full 150W output Standard RX Range 500 kHz to 30 MHz (General Coverage) Standard TX Range 2 MHz to 30 MHz (Marine Bands) Output Power High (150W), Medium (50W), Low (25W)