JNCRADIO Ground Plate for MC-750 / JPC-12 M10 Portable Antenna – Chelegance

Summary

The Chelegance JNCRADIO ground plane is an essential accessory for mobile amateur radio operators using vertical antennas such as the MC-750 or JPC-12. This central hub allows you to set up an effective and tidy radial ground plane in a matter of seconds, guaranteeing superior DX performance compared to a simple connection to a ground stake. It is a sensible technical choice for stabilising your impedance and maximising your signal when operating on the move.

Key features

• Quick Deployment: Thanks to the 4mm banana plugs, the radials can be fitted and removed instantly without any fiddly screwing.
• Wide Compatibility: Designed specifically for the MC-750, it also fits perfectly with JPC-12 antennas and other systems using an M10 thread.
• Enhanced Performance: By increasing the number of contact points for the radials (up to 12), it creates a dense ground plane that lowers the radiation angle and reduces signal loss.
• Ultra-Portable: Weighing just 40g and measuring 5cm in diameter, it slips into any pocket of a radio rucksack.
• Customisable: Supplied with banana plugs, it gives you the freedom to create your own radials (length and type of wire) tailored to your preferred frequency bands.

Technical specifications

• Product type: Grounding plate
• Disc diameter: 50 mm (1.97 inches)
• Thickness: 11 mm (0.43 inches)
• Weight: 40 g (0.09 lb)
• Mounting thread: M10 x 1.5 (metric standard)
• Radians connectors: 12 x sockets for 4 mm female banana plugs
• Material: High-resistance conductive and insulating alloy
• Accessories included: 12 male 4mm banana plugs (to be soldered onto your wires)

Compatibility

• Chelegance MC-750 antenna: Direct native compatibility with the original spike.
• JPC-12 (PAC-12) antenna: Compatible with the M10 thread, BUT requires the use of the MC-750 earth spike (the JPC-12’s original spike is often too short to accommodate the thickness of the disc).
• Other antennas: Any vertical antenna system using a base with an M10 x 1.5 thread.
• Wire for radials: We recommend 0.75 mm² RV flexible wire (not supplied) for making the radials.
• Important note: Not compatible with the yellow radian strip supplied as standard with the MC-750 (designed for terminal block connection rather than banana plugs).

FAQ

Why choose the JNCRADIO Grounding Plate?

• Tidy set-up: No more tangled wires or makeshift connections with crocodile clips on the earth stake.
• Quick installation: The ‘Plug & Play’ banana plug system saves valuable time during SOTA or POTA activations.
• Chelegance quality: Robust construction suited to the demands of the field, drawing on JNCRADIO’s recognised expertise.
• Signal optimisation: This is one of the most cost-effective ways to genuinely improve the performance of your portable station.

Comparison