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Chameleon Knowledge Base · The Complete Online HF Antenna Handbook

CHA RXL Receive Loop System Overview

The discontinued CHA RXL remains a useful receive-only loop for existing owners who want continuous 135.7 kHz–30 MHz coverage in a compact, rotatable antenna. This page supports installed RXL systems; it is not a current-product sales page.

Product Installation Guides CHA RXL Receive Loop Reviewed 2026-07-14
Start with the real operating role: The discontinued CHA RXL remains a useful receive-only loop for existing owners who want continuous 135.7 kHz–30 MHz coverage in a compact, rotatable antenna. This page supports installed RXL systems; it is not a current-product sales page.

How the documented system works

Its 36-inch rigid loop feeds an active preamplifier. A protected coax run carries received RF and 12 VDC between the outdoor loop and indoor bias-T; the bias-T then connects to the receiver.

The boundary that prevents mistakes

Never transmit into the RXL: RF can permanently damage the preamplifier. Keep it at least 25 feet from another antenna transmitting 100 W or more, and put no switch, duplexer, controller, or other device between bias-T and preamplifier.

Use this field sequence

Choose mast, heavy-duty camera tripod, or tabletop mounting, assemble the loop flanges carefully, route a direct BNC coax to the bias-T, connect the receiver-side jumper, apply 12–14 VDC, and test receive operation only.

Source boundary

CHA RXL Operator’s Manual (discontinued-owner reference). The exact guide, product state, complete feed path, geometry, and safety limits control. Connector fit does not prove electrical or structural compatibility.

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