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CHA PRV 2.0 Engineering Guide: Optimizing the MCC 2.0 Loading Coil

CHA PRV 2.0 Engineering Guide: Optimizing the MCC 2.0 Loading Coil works best as a controlled adjustment, beginning with the current guide setting and changing one variable at a time.

Product Installation Guides CHA PRV 2.0 Reviewed 2026-07-14
In plain language: CHA PRV 2.0 Engineering Guide: Optimizing the MCC 2.0 Loading Coil works best as a controlled adjustment, beginning with the current guide setting and changing one variable at a time.

A useful field setting is a starting point, not a magic number. The surrounding ground, mount, nearby metal, and deployed return wires all move the installed resonance.

The CHA PRV 2.0 is designed for the operator who wants a resonant 40–6 m antenna without carrying a separate antenna tuner. Its standard field system combines the MCC 2.0, SS58 whip, 27 in SINGLE EXT, CHA BLANK, PUCK HUB, four 12.5 ft counterpoise wires, choked coax, Band Keys, and a selected MPAS READY mount.

What matters in this configuration

  • Fully extend the SS58 for the 40–10 m loaded configurations. Set counterpoise count and length from the table, use the Band Key or published coil height as a starting point, then move the MCC 2.0 tuning tube one controlled step at a time until the installed antenna reaches resonance.
  • A tuner or low station-end SWR does not prove that the antenna is resonant, efficient, or using the intended return path.
  • Save the final setting for the exact band and site, then verify it again whenever geometry or hardware changes.

Why this choice matters

CHA PRV 2.0 is a compact, field-tunable resonant vertical system built around the continuously adjustable MCC 2.0 loading coil. The useful result comes from the complete documented system rather than any one threaded component.

The parts that make it a complete antenna

  • CHA MCC 2.0 continuously adjustable loading coil
  • CHA SS58 telescoping whip and 27 in CHA SINGLE EXT
  • CHA BLANK feed point and CHA PUCK HUB
  • Four 12.5 ft banana-plug counterpoise wires, winders, and tent stakes
  • 12 ft RG-58 coax with an integrated RF choke
  • Band Keys, tactical storage bag, CHA SS INSULATOR, and the selected mount option

Use the result in the field

Record the exact radiator, loading or feed-point hardware, return system, mount, feed line, band, dimensions, and final measurement. Repeatability is more valuable than a one-time low SWR reading.

Before you transmit

  • Confirm the exact radiator and whether the MCC 2.0 is base loaded, center loaded, or removed for the 6 m OCFD.
  • Use the documented counterpoise count and starting length for the selected band.
  • Keep the supplied feed-line choke in the coax path.
  • Set the MCC 2.0 from the guide or Band Key, then fine-tune the installed antenna.
  • Inspect every mechanical and RF connection before applying operating power.
Boundary: The current guide documents SS58, MIL WHIP, and SS17 MCC 2.0 configurations. It does not document SS25, so connector fit must not be presented as approval.
Use the current source before deployment.

This lesson explains the decision in plain language. The current product guide controls assembly, settings, ratings, and safety.

Open the CHA PRV 2.0 User Guide · View the current product page

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