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Ground Disc for MC-750 Portable Antenna
Lightweight M10 × 1.5 radial connection disc with twelve 4mm connection points for building a custom portable ground-plane system.
The Ground Disc for MC-750 provides a simple way to add a larger, custom radial system to the MC-750 and other suitably configured portable antennas using an M10 × 1.5 mounting arrangement.
Twelve 4mm radial connection points are arranged around the 50mm disc, and twelve matching banana plugs are supplied so you can make radial wires to suit your own portable installation.
Rather than being tied to a fixed supplied radial length, this gives you the flexibility to choose the number, length and deployment pattern of the radial wires used with your antenna.
Twelve 4mm connection points allow multiple radial wires to be deployed around the antenna.
Designed around the mounting arrangement used by the MC-750 portable vertical antenna.
Make radial wires to the lengths required for your particular portable installation.
Compact 50mm disc adds very little weight to a portable antenna kit.
This accessory is not a plug-and-play replacement for the original yellow MC-750 radial.
The Ground Disc uses 4mm banana plugs. Suitable radial wire must be cut to length, stripped and securely soldered into the supplied plugs before the radial can be connected to the disc.
The Original Yellow Radial Does Not Fit
The yellow radial supplied with the standard MC-750 uses a 3mm connection format. The Ground Disc instead uses 4mm connections, so the original radial cannot simply be transferred to the disc.
The supplied 4mm plugs are intended to be fitted to newly prepared radial wires.
Make the Radial System to Suit Your Setup
The manufacturer's recommendation is 0.75mm² RV wire. Other suitable flexible copper wire can also be used provided the stripped conductor can be securely fitted and soldered into the supplied 4mm banana plugs.
Flexible antenna wire such as Messi & Paoloni DipoFlex can also be used for custom radial construction where its conductor can be correctly terminated in the supplied plug.
Preparing the Ground Disc
Use an MC-750 Spike
The standard JPC-12 spike is not long enough to accommodate the Ground Disc correctly. If using the disc with a JPC-12, replace the original spike with an MC-750 spike.
Supplied
- 1 x Ground Disc
- 12 x 4mm banana plugs for customer-prepared radial wires
MC-750 Ground Disc
Dimensions, connection information and installation requirements for the MC-750 portable radial connection disc.
Ground Disc
4mm Banana Plug System
Twelve matching 4mm banana plugs are supplied with the disc.
Radial wire is not pre-fitted. Each wire must be cut, stripped and securely soldered into a supplied plug before connection.
MC-750
The standard yellow MC-750 radial uses a 3mm connection system. The Ground Disc uses 4mm connections, so new radial wires must be prepared using the supplied plugs.
JPC-12
The original JPC-12 spike is too short for correct Ground Disc installation. Use an MC-750 spike when fitting the disc to a JPC-12 system.
Supplied
Shipping:
We have several shipping options for our products, including next-day and Saturday/Sunday delivery for certain items. Please see these options at checkout.
Returns:
If you have any equipment that needs to be returned to Martin Lynch & Sons, please fill out the form below:
Upon receipt of goods you have 14 days to return goods however the goods must be returned in original packaging and care must have been taken with the goods you wish to return. Under distance selling regulations you are not entitled to any refund on carriage charges or modification charges made at your request. Large items cannot be returned if they have been assembled, unless faulty.
Warranty Terms and Conditions
Outside of the 14 faulty return period, returned items cannot be accepted, unless covered by manufacturer's warranty. We will repair as much as possible on site however in exceptional circumstances products may have to be returned to the manufacturer of distributor.
For repairs/replacements under manufacturer’s warranty for any item please download a ML&S return form from the link above and return to ML&S with the faulty product.
International Warranty information
Warranty service for items we sell is available in the U.K. only, unless otherwise noted. It is your responsibility to pay freight for returned items to the U.K. and back to you for desired warranty coverage. All of our NEW products come with a minimum 12 month warranty, (Yaesu & Icom 24 months), with up to 90 days on second-hand equipment. Items returned for service must state "returned goods for repair" on the return air waybill or U.K. import customs duties apply and will be added to your invoice. For more info about returning items please contact our customer help desk, [email protected]