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Chameleon Knowledge Base · The Complete Online HF Antenna Handbook

CHA URT1 Installation Guide: Remote Coupler

Install the URT1 Tuner Unit at the antenna end of the system and reserve the COUPLER connection for a direct coax run to the indoor Coupler Unit. That cable carries DC as well as RF.

Product Installation Guides CHA URT1 Remote Automatic Tuner Reviewed 2026-07-14
Start with the complete system: Install the URT1 Tuner Unit at the antenna end of the system and reserve the COUPLER connection for a direct coax run to the indoor Coupler Unit. That cable carries DC as well as RF.

What the product controls

For a single wire, use the beehive output and the documented ground or counterpoise connection. For a coax-fed antenna, connect its feed line to ANTENNA and leave the beehive empty. Weather-seal outdoor coax connections.

The boundary that prevents mistakes

An amplifier, switch, meter, diplexer, arrester, or other inline device between the two URT1 units can interrupt or short the bias-T path, damage the tuner, and void the intended connection architecture.

Use this field sequence

Mount the Tuner securely with connector drainage and service access, verify the protected coax for shorts before connection, keep optional station devices on the transceiver side of the Coupler, then power and tune at low level.

Source boundary

CHA URT1 User Guide 260524 and Applications Guide 260612. The current guide for the exact product and completed configuration controls. A shared connector or 3/8-24 thread does not prove electrical, power, or structural compatibility.

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