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The ULTIMAX DXTREME End-Fed Antenna covers 1.0 to 54.0 MHz and is rated at 2KW SSB.
The DXTREME is the Ultimate End-Fed Antenna with the capability of covering from 160-6 Meters.
All DXTREME Models are optimally designed to work the most efficiently with the length of wire sold. They do not just include a common transformer with any Random Length of Wire. To the contrary, careful detail is give to each model to maximize performance.
The Optional ULTIMAX counterpoise set enhances performance where a ground connection is not available. Just like all ULTIMAX models, the DXTREME it’s designed for the harsh and punishing weather abuse mother nature can throw at it.
(counterpoise set available as an accessory below)
(Most radio tuners work but highly recommend the use of a wide-range tuner)
ULTIMAX DXTREME-Instruction.pdf
The ULTIMAX DXTREME End-Fed Antenna covers 1.0 to 54.0 MHz and is rated at 2KW SSB.
The DXTREME is the Ultimate End-Fed Antenna with the capability of covering from 160-6 Meters.
All DXTREME Models are optimally designed to work the most efficiently with the length of wire sold. They do not just include a common transformer with any Random Length of Wire. To the contrary, careful detail is give to each model to maximize performance.
The Optional ULTIMAX counterpoise set enhances performance where a ground connection is not available. Just like all ULTIMAX models, the DXTREME it’s designed for the harsh and punishing weather abuse mother nature can throw at it.
(counterpoise set available as an accessory below)
(Most radio tuners work but highly recommend the use of a wide-range tuner)
ULTIMAX DXTREME-Instruction.pdf
The ULTIMAX 100 antenna is designed with the H.O.A., limited space amateur, and rapid deployment operator in mind. It provides for all-band operation from 80 to 6 meters continuously with just the use of an antenna tuner and no radials or grounding needed.
Need a high performance, multi-band, stealthy antenna system that is easy to setup and use? Get the Bullet antenna matcher with the antenna wire, insulator and feed line choke all in one convenient package (great for HOA restricted areas, camping and portable operations, etc.)
Why is this end fed OCF antenna a better choice than and End Fed Half Wave (EFHW)? More bands, shorter length and no dangerous high voltage at antenna feed point from VOLTAGE FED 49:1 TRANSFORMERS!!!
Off Center Fed (OCF) antennas are very convenient as they will allow multiple bands of operation with a simple wire antenna which is fed off center. The Palomar Engineers 4010 OCF is a very popular antenna and consists of an off center fed dipole with sides of 55 feet and 11 feet and it will work all bands from 40-6 meters.The BULLET-4006 uses the same dimensions but the wire section is 55 feet as in the OCF and the coax outer braid is used for the “other” part of the OCF dipole. We place a choke on the coax at the 12 foot distance from the matching unit and we essentially have an OCF antenna with its great frequency range, but with only a 55 foot wire length instead of the 66 feet required by the regular OCF or EFHW. You feed the antenna from one end which may be more convenient for some installations. This antenna will work on 40-30-20-17-15-12-11-10 and 6 meters. Most bands are under 3:1 SWR and easily tuned by your transceiver’s internal antenna tuner or external tuner used with an amplifier.
This antenna is a great stealthy primary or backup antenna and works exceptionally well for apartments, condominiums, homeowner, mobile home parks, RV applications and ARES, RACES, MARS, EMCOMM, NVIS, First Responders and Emergency Preparedness. Compact, Stealthy and Light weight for back packing and portable use.
The antenna is simple to deploy, folds up easily for transport, and with the 55 foot included wire, can work the 40-6 meter bands easily with the built in antenna tuner of most current day transceivers. Some bands may not even require a tuner if the antenna length and counterpoise choke position is adjusted correctly. (see SWR graph in gallery).
These antennas are MUCH BETTER PERFORMERS than End Fed Half Wave antennas because they work the WARC bands, DO NOT HAVE A DANGEROUS HIGH VOLTAGE at the antenna connection and are shorter to fit in smaller spaces yet provide more band coverage up to 6 meters!
Make the right choice - use and end fed OCF and enjoy the expanded band coverage, additional safety and smaller footprint!
BULLET-4006-500 for 500 watts PEP/350 watts digital
The antenna can be used as a up or down sloper, “L” with a vertical section (at either end) and a horizontal section, or as a horizontal antenna between two trees or supports. Zig-zag and 90 degree bends horizontal are also ok.
BULLET Matching Unit
Our antenna matching network is called the “Bullet” because of it shape and its effectiveness at taking down or contacting distant (DX) stations all over the world under the right conditions.
For best results we recommend that the coax feed line be at least 25 feet. We also recommend a coax noise filter near radio end of the coax feed line to reduce RFI common mode current from interfering with the radio operation.
For best results raise the Bullet matching unit as high as possible (use a tree or vertical support) and then extend the antenna wire horizontally or as an “L” (horizontal with vertical end drop). The antenna may also be deployed as a sloper with the Bullet matching unit at the top (best) with the wire sloping toward the ground (with the end high enough to avoid contact by humans or animals), or at the bottom of the sloper with the antenna wire rising to a higher point.
Any length of 50 ohm feed line ok (over 25 feet minimum recommended) but longer feed lines over 50 feet may show reduced SWR on some bands due to soil conductivity, nearby objects, etc. Due to local ground conditions, antenna height and feed line length, SWR may vary and an antenna tuner may be required or some bands to bring SWR at end of feed line to acceptable levels. Position a feed line choke (part# SOFLC) 12 feet from the matching unit.
Use a good quality 50 ohm cable adequate for the power level of your station.The Bullet matching unit is rated for 500 or 1500 watts PEP (depending on model) for SSB and 50% for CW or digital modes. If the matching unit becomes warm to the touch after transmitting at high power, reduce the power output or the internal matching unit may become damaged.
NOTE: The matching unit output is DC grounded to bleed off static electricity, however it is not RF grounded.
Need a shorter antenna for portable or stealth installation? Check out the BULLET-2006 at 25 feet length and still works 20-6 meters!
NOTE: due to the nature of antenna systems and the modifications many users perform and the transmitter power levels that may be applied higher then the specifications, the antenna systems are NOT RETURNABLE unless they are unused, in the original packing with the original invoice and a return request is made withing 30 days of original purchase.
SWR TECH NOTE:The SWR graphs shown are specific to the conditions listed including antenna height, configuration (flat top, inverted V, inverted L, etc.) and direction, feed line length and type, geographic location and soil condition, calibration and accuracy of SWR instruments used. Your SWR measurements will probably be different and manufacturer takes no responsibility or liability for these differences beyond the purchase price of the antenna.
LMR-400/RG213/RG8 (1/2" coax users): Use 3 turns thru included choke which should be enough choking for 40-6 meters. If you find you need more choking, use a second SOFLC with an additional 3 turns in series with the first choke as shown in the pictures.
Need a high performance, multi-band, stealthy antenna system that is easy to setup and use? Get the Bullet antenna matcher with the antenna wire, insulator and feed line choke all in one convenient package (great for HOA restricted areas, camping and portable operations, etc.)
Why is this end fed OCF antenna a better choice than and End Fed Half Wave (EFHW)? More bands, shorter length and no dangerous high voltage at antenna feed point from VOLTAGE FED 49:1 TRANSFORMERS!!!
Off Center Fed (OCF) antennas are very convenient as they will allow multiple bands of operation with a simple wire antenna which is fed off center. The Palomar Engineers 4010 OCF is a very popular antenna and consists of an off center fed dipole with sides of 55 feet and 11 feet and it will work all bands from 40-6 meters.The BULLET-4006 uses the same dimensions but the wire section is 55 feet as in the OCF and the coax outer braid is used for the “other” part of the OCF dipole. We place a choke on the coax at the 12 foot distance from the matching unit and we essentially have an OCF antenna with its great frequency range, but with only a 55 foot wire length instead of the 66 feet required by the regular OCF or EFHW. You feed the antenna from one end which may be more convenient for some installations. This antenna will work on 40-30-20-17-15-12-11-10 and 6 meters. Most bands are under 3:1 SWR and easily tuned by your transceiver’s internal antenna tuner or external tuner used with an amplifier.
This antenna is a great stealthy primary or backup antenna and works exceptionally well for apartments, condominiums, homeowner, mobile home parks, RV applications and ARES, RACES, MARS, EMCOMM, NVIS, First Responders and Emergency Preparedness. Compact, Stealthy and Light weight for back packing and portable use.
The antenna is simple to deploy, folds up easily for transport, and with the 55 foot included wire, can work the 40-6 meter bands easily with the built in antenna tuner of most current day transceivers. Some bands may not even require a tuner if the antenna length and counterpoise choke position is adjusted correctly. (see SWR graph in gallery).
These antennas are MUCH BETTER PERFORMERS than End Fed Half Wave antennas because they work the WARC bands, DO NOT HAVE A DANGEROUS HIGH VOLTAGE at the antenna connection and are shorter to fit in smaller spaces yet provide more band coverage up to 6 meters!
Make the right choice - use and end fed OCF and enjoy the expanded band coverage, additional safety and smaller footprint!
BULLET-4006-100 for 100 watts PEP/100 watts digital
The antenna can be used as a up or down sloper, “L” with a vertical section (at either end) and a horizontal section, or as a horizontal antenna between two trees or supports. Zig-zag and 90 degree bends horizontal are also ok.
BULLET Matching Unit
Our antenna matching network is called the “Bullet” because of it shape and its effectiveness at taking down or contacting distant (DX) stations all over the world under the right conditions.
For best results we recommend that the coax feed line be at least 25 feet. We also recommend a coax noise filter near radio end of the coax feed line to reduce RFI common mode current from interfering with the radio operation.
For best results raise the Bullet matching unit as high as possible (use a tree or vertical support) and then extend the antenna wire horizontally or as an “L” (horizontal with vertical end drop). The antenna may also be deployed as a sloper with the Bullet matching unit at the top (best) with the wire sloping toward the ground (with the end high enough to avoid contact by humans or animals), or at the bottom of the sloper with the antenna wire rising to a higher point.
Any length of 50 ohm feed line ok (over 25 feet minimum recommended) but longer feed lines over 50 feet may show reduced SWR on some bands due to soil conductivity, nearby objects, etc. Due to local ground conditions, antenna height and feed line length, SWR may vary and an antenna tuner may be required or some bands to bring SWR at end of feed line to acceptable levels. Position a feed line choke (part# SOFLC) 12 feet from the matching unit.
Use a good quality 50 ohm cable adequate for the power level of your station.The Bullet matching unit is rated for 500 or 1500 watts PEP (depending on model) for SSB and 50% for CW or digital modes. If the matching unit becomes warm to the touch after transmitting at high power, reduce the power output or the internal matching unit may become damaged.
NOTE: The matching unit output is DC grounded to bleed off static electricity, however it is not RF grounded.
Need a shorter antenna for portable or stealth installation? Check out the BULLET-2006 at 25 feet length and still works 20-6 meters!
NOTE: due to the nature of antenna systems and the modifications many users perform and the transmitter power levels that may be applied higher then the specifications, the antenna systems are NOT RETURNABLE unless they are unused, in the original packing with the original invoice and a return request is made withing 30 days of original purchase.
SWR TECH NOTE:The SWR graphs shown are specific to the conditions listed including antenna height, configuration (flat top, inverted V, inverted L, etc.) and direction, feed line length and type, geographic location and soil condition, calibration and accuracy of SWR instruments used. Your SWR measurements will probably be different and manufacturer takes no responsibility or liability for these differences beyond the purchase price of the antenna.
LMR-400/RG213/RG8 (1/2" coax users): Use 3 turns thru included choke which should be enough choking for 40-6 meters. If you find you need more choking, use a second SOFLC with an additional 3 turns in series with the first choke as shown in the pictures.
HF ‘Plug-and-Play’ - Just connect to your radio/coaxial lead & operate in seconds
Antenna has an incorporated 5’ quality flexible UV-resistant coaxial cable terminated with select ferrite beads and a PL-259. An SO-239 double female barrel adapter is included for connecting a PL-259 terminated extension cable.
HOA, Home, Condo Better performance is generally seen with antenna one or two floors above ground level such as in an attic or closet and about 10 feet or more from metal/RF-interactive structures.
If your home has undesirably high RF noise (such as from electrical appliances, switching power supplies of electric devices, even light bulbs, etc.) that you aren’t able to reduce sufficiently with such as grounding, ferrite beads, antenna location, etc. or your home is made of RF absorbing/reflective/interactive material (walls/roof), consider placing the antenna outside.
(see INSTALLS page of COMPACtenna.com for helpful ideas)
All materials and construct are weather/UV resistant.
Consider placing the antenna in/on a wooden, fiberglass or PVC, other non-RF Interacting material structure such as a shed/barn, gazebo, pergola, archway, trellis, patio roof, patio over-head structure, or even (temporary, as appropriate) a fiberglass ~10’ step-ladder.
Better performance is generally seen with antenna about 10 or more feet above ground/water and about 10 or more feet from metal/RF-interactive structures.
No ground plane counterpoise needed
No ground stake needed
No metal mast needed (do not use – see above)
No wires needed
Each antenna manufactured is precisely tested/tuned before shipment.
Low SWR: nominal <2:1
The entire 20 Meter Band 14-14.35 MHz
On the 40 Meter Band 7.1-7.2 MHz; much of/entire band with tuner
With internal tuners choose center frequency with SWR<3:1 and then activate internal tuner
Proximity to metal/RF-interactive structures/materials can affect SWR
Maximum Power Rating: 100 Watts SSB voice; 15 Watts other modes
Under normal use and conditions
Always check SWR; operate only per transmitter/amplifier specifications
Antenna Type: Unique Electric/Magnetic Field Diversity Science & Technology Patented Design Patent No. US 9,407,001
Special design construct of spiraled metal sheeting including ‘extended flat monofilar spiral Tesla-like coils’
“Magnetic Field Resonator”: This built-in resonating matching system is an effectual component of the electromagnetic E & H fields
production, resulting in better performance than expected for such a small antenna.
Antenna is omni-directional (works in all directions)
Ionosphere propagation including NVIS
is supported by broad hemispheric elevation coordinate pattern, phase delay, and elliptical polarization.
With a particularly strong magnetic near field, proximity noise is reduced.
Follow applicable RF-Exposure Regulations.
Follow local building codes including NEC grounding/lightning/etc. and NFPA guidelines.
Don’t touch any part of antenna structure, support, feedline, grounding,
lightning arrestor components/systems nor any other part of installation and related parts/structures while transmitting.
[Design and specifications subject to change without notice.]