Chameleon Antenna CHA-M25-COIL

The Chameleon Antenna CHA-M25-COIL is a rugged, high-performance 40-meter loading coil built to expand the frequency coverage of your vertical antenna system. Purpose-built for the CHA SS25 25-foot telescoping whip, it transforms your MPAS-ready Basic Vertical (BV) configuration into a resonant, quarter-wave, base-loaded vertical antenna on 40 meters. Tool-free installation and a built-in bypass jumper let you switch instantly between 40M and 30-6M operation, no need to remove the coil between bands. Proudly built in Nevada, USA, the M25-COIL is a go-to choice for POTA/SOTA activators, emergency communicators, and HOA-restricted operators who need serious low-band performance from a stealth-friendly vertical.

Features:

• Enables 40M operation on your CHA SS25 vertical setup without reconfiguration
• Built-in bypass feature for instant switching to 30-6M operation via jumper (jumper not included)
• Purpose-built and optimized for the CHA SS25 25' telescoping whip
• Fully MPAS-Ready and compatible with the Chameleon MPAS ecosystem
• Quick, tool-free installation for portable, base, or emergency setups
• Rugged and compact construction, built in Nevada, USA
• Ideal for POTA and SOTA activations
• Well suited to emergency and tactical communications
• Stealth-friendly option for HOA-restricted operators

Specifications:

• Band: 40 Meters (bypass to 30-6M with jumper, not included)
• Power Rating: 200W SSB / 100W CW-Digital
• Compatible Radiator: CHA SS25 25' telescoping whip
• System Compatibility: Chameleon MPAS READY / Basic Vertical (BV)
• Installation: Tool-free
• Construction: Rugged, field-grade, USA-built (Nevada)
• Sold Individually

Setup Notes:

• Extend the SS25 fully when using the M25-COIL for 40 meters
• Use radials appropriate for the frequency. More and longer radials improve grounding on 40M
• Terrain, moisture, and nearby objects can affect tuning; check and adjust SWR periodically