DX Commander Signature 9 HF Multi-Band Vertical Antennas

DX Commander Signature 9 HF Multi-Band Vertical Antennas are an all new, heavy-duty free-standing DX Commander design that is built on the success of the original DX Commander Classic and Signature 12.4 designs. Efficiently resonant on every HF band of operation, featuring wide SWR bandwidth and low take-off angle, the Signature 9 covers the Amateur bands 40 to 10 meters, with 80 meters available by adding a horizontal Inverted-L wire. DX Commander vertical antennas are based on the same principles as a fan dipole, with several vertical wire elements of various resonant lengths connected to a common feedpoint. The wire elements and support ropes are arranged with spacer plates around the non-conductive fiberglass mast. When installed with an appropriate radial system, the Signature 9 achieves efficient quarter-wave vertical performance with natural resonance and low SWR on every band, without the need for traps, coils or antenna tuners. Band-hopping DXing and simultaneous multi-band multiplexed operations are supported. The Signature 9 antenna is rated at 1500W SSB/CW, 400W FT8 and other digital modes.

The Signature 9 antenna is only 29.5 ft. (9m) in total height, so it can be installed out the way from prying eyes in your backyard; perfect for HOA situations. SWR bandwidth is typically 300 kHz on any band delivering a perfect match with no tuner required. Since the 10m band covers a huge frequency range, users might consider sacrificing the 12m band to cover two segments of the 10m band with two dedicated elements. The Signature 9 is considered as an upgrade to the Classic with a larger mast. A similar wire element cutting chart shows the option of running an inverted L for 80m. The 30m band is operable in this configuration using an antenna tuner.

Order your Signature 9 HF Multi-Band Vertical Antennas from DX Engineering and get on the air!

DX Commander Signature 9 Features and Specifications:

Ground Post: Supplied with a 1.50 in. (38mm) Fiberglass Ground Post.

Alloy Plates: Aircraft-quality 5251 alloy, laser cut in England before deburring to give that “hammered” look, which eliminates sharp edges and provides a nice finish.

Spreader Plates: Marine-grade high-density polyethylene sheet material from USA, charcoal-gray, UV and environmentally stabilized to withstand the harshest of marine and high RF conditions. Spreader Plates are machine cut in England to DX Commander specifications.

Stay-Up Kit: Band style clamps, that keep the antenna mast sections extended, are molded in England in a black PA66 Nylon. Supplied in Hex or Wing Nut version depending on antenna model.

Shock-Cord: Marine grade shock-cord, with a UV and RF stable Dyneema woven exterior.

Spade Connectors: Kits include large spade connectors for best performance under tension.

Hardware: All nuts, bolts and washers are stainless steel.

Coaxial Connector: UHF female SO-239 coaxial connector, nickel plated brass with PTFE dielectric.

Fiberglass Poles: Made to DX Commander specifications in a spiral wound fiber, high-quality epoxy and paint finish.

DX10 Wire: Made in England for DX Commander, DX10 wire has an outstanding reputation for both strength and in particular, extreme flexibility. The insulation is “arctic grade” and still flexible down to -40° F. Originally designed for military use, this insulation is particularly strong but highly flexible and the stranded annealed copper wire is approximately 19 AWG and is made from 24 strands of 0.008 in. (0.2mm) wire.

NOTE: DX Commander antenna kits now include improved HCL EZ-Clamps and Dyneema Shock Cord instead of Carabiners.

* User assembly is required.

All DX Commander Signature 9 Antenna kits come with everything you need (except for guying stakes):

• Signature 9 Mast - 29.53 ft. (9m) Extended Height

• Supplied with a 1.50 in. (38mm) Fiberglass Ground Post.

• The DX Commander Ground Plate - 0.128 in. (3mm) thick laser cut 5251 alloy, with the hole for the included SO-239 assembly and 15 pre-tapped holes for ground radials. Use up to 4 radial wires per connector and you can double up on spade connectors to achieve a mind blowing 120 radials.

• The Driven Plate - 0.128 in. (3mm) thick laser cut 5251 alloy, laser cut with holes spacings to allow a selection of elements, as required. Choose 2 elements for say 80m and 60m. Perhaps a low-band special, say 80m, 60m and 40m. Perhaps an equidistant 4-hole pattern built into the template for folks who only want to run 4-elements, perhaps 80m, 40m, 30m and 20m. And finally, for those brave enough, run all six elements to give you the whole orchestra from 80m through to 6m.

• The kit comes with five 0.494 (10mm) thick plastic plates. The 4 lower plates are a massive 7.087 (180mm) in diameter. Each of the plates has a different hole pattern to fit snugly on the pole at just the right point. All the plates can be used as a guying point should the user want to protect their investment from severe weather. The fifth plate, near the top is 2.953 in. (75mm) in diameter and allows for a connection point for the 80m fold-over as well as the 60m element or 20m as a 5/8 element.

• 5 marine-grade high-density polyethylene Guy Plates and Spreader Plates

• 2 x 328 ft. (100m) Spools of DX10 Antenna Wire - cut all elements first, then cut radials with remaining wire

• SO-239 Coaxial Connector Assembly

• Selection of Spade Connectors

• HCL Stay Up EZ-Clamps Kit

• Marine Dyneema Shock-Cord 32.80 ft. (10m) 550 Paracord for element support

• Glue Lined Shrink-Wrap

• Stainless Steel Hardware