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The DX Commander 40m 4-Square Kit contains the main antenna hardware required to build a four-element 40m 4-square vertical array.
The kit includes four 10m DX Commander telescopic poles, ground and radiating plates, guy plates, SO-239 feed assemblies, and HCL clamps. It provides the mechanical foundation for building a directional 40m 4-square system while allowing you to choose your own wire, radial system, phasing lines, and switching arrangement.
Please note: this is an antenna hardware kit only. Phasing lines and the 4-square switchbox are not included.
What's in the Box
- 4 x 10m DX Commander telescopic poles
- 4 x Ground Plates
- 4 x Radiating Plates
- 4 x Retail Guy Plates
- 4 x DX Commander SO-239 assemblies
- 28 x HCL clamps for use as a stay-up kit
Additional Parts Required
To complete the antenna system you will also require:
- Antenna element wire
- Radial wire
- Guy lines
- Suitable 6mm nuts, bolts, and washers
- Phasing lines
- 4-square switching / phasing unit
The phasing lines and switchbox can either be home-built or sourced separately from a suitable 4-square system manufacturer.
Radial Recommendations
For effective results, DX Commander suggest either:
- 16 x quarter-wave radials, or
- 30 x eighth-wave radials
per antenna installation as appropriate to the chosen layout.
Tuning
For initial tuning, use an element wire slightly longer than required, approximately 11m, and fold the excess back down the pole after reaching the top.
Tune each of the four verticals individually for the required resonance and approximately 1:1 SWR before connecting the completed array to the 4-square switching system.
The element wire can be wound gently around the pole in a loose helix and secured periodically with suitable tape to help prevent the wire from flapping in the wind.
Important Note
This listing is for the DX Commander 40m 4-Square antenna hardware kit only.
The following are not included:
- Phasing lines
- 4-square switchbox
- Antenna wire
- Radial wire
- Guy lines
- General 6mm hardware
- Coaxial feeder
For the lightly loaded upper pole sections, tape and a cable tie may be used instead of HCL clamps. For permanent installations, a small amount of gel-based super glue may also be used, although this should be considered effectively permanent.
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]