Bullet End Fed OCF Antenna System, 100-5000 Watt Options, 55 Feet, 40-6 meters Including WARC, Vertical Radiator for Easy DX, POTA, SOTAProduct DetailsBrand: Palomar EnineersMPN: BULLET-4006-100, -500, -1500, -5000Frequency Band(s): 40-6 metersPower (PEP watts):: 500/1500Length (ft):: 55 feetPalomar Engineers BULLET-4006: Compact 40–6 m OCF Antenna for SOTA, POTA & Stealth HF
Want reliable multi-band HF from 40 through 6 meters without bulk or feedpoint drama? The Palomar BULLET-4006 is an end-fed, off-center-fed (OCF) wire antenna that delivers wide band coverage, quick setup, and a compact footprint — ideal for SOTA, POTA, EMCOMM, RV/camping, and HOA/stealth installs. It uses a 55 ft radiator while your coax braid forms the other leg of the OCF system, giving you the range of a classic OCF dipole with simpler deployment.
Why OCF (and not EFHW)?
- Safer feedpoint: avoids the high-voltage 49:1 transformer typical of EFHWs.
- More bands, shorter wire: 40–6 m coverage with just 55 ft of wire.
- Cleaner operation: reduced RFI and simple portable deployment.
Key specifications
Feature
Details
Frequency Coverage
40, 30, 20, 17, 15, 12, 11, 10, and 6 meters (most bands typically ≤ ~3:1 SWR; touch up with rig ATU as needed).
Radiator Length
55 ft wire; coax outer braid used as the other OCF leg.
Coax Choke Placement
Place a feed-line choke at approximately 12 ft from the matching unit.
Recommended Feed Line
25 ft+ of 50 Ω coax; longer runs may affect SWR depending on soil/nearby objects.
LMR-400 / RG213 / RG8X Users
Use 3 turns through the choke; if more choking is needed, add a second SOFLC with another 3 turns in series.For RG-8X use 5-6 turns thru a SOFLC snap on choke.
Deployment Styles
Sloper, Inverted-L, horizontal between supports; zig-zag and 90° bends (horizontal) are acceptable.
Portable & stealth friendly
Raise the matching unit as high as practical, route the radiator as a sloper or inverted-L, and keep it clear of metal or wet foliage. Add the choke at ~12 ft on the feed line and run at least 25 ft of coax back to the rig.
Setup (5 quick steps)
- Mount the BULLET matching unit on a mast/tree or convenient tie-off.
- Run the 55 ft radiator as a sloper, inverted-L, or horizontal path.
- Install a coax choke ~12 ft from the matching unit (SOFLC).
- Feed with 25 ft+ of 50 Ω coax; longer runs can modestly affect SWR.
- Check SWR across bands; touch up with your transceiver’s ATU where needed.
Recommended accessories
- SOFLC ferrite choke (12 ft from the BULLET matching unit).
- Coax noise filter near the radio to reduce common-mode noise/RFI.
- UHFMBNCF adaptor for BNC-input radios.
Notes & operating guidance
- DC grounded (not RF grounded): the matching unit bleeds static but is not an RF ground.
- Duty cycles: reduce power if the matching unit becomes warm during extended operation; plan lower duty for CW/digital.
- SWR caveat: SWR varies with height, ground, layout, and feedline length; gallery SWR plots are examples, not guarantees.
Choose Your Power Rating
Model
Max Rated Power
Typical Use
BULLET-4006-100
100 W PEP / 100 W digital
Portable rigs up to 100 W; SOTA/POTA
BULLET-4006-500
500 W PEP / 350 W digital
Mid-power base/field use; longer duty sessions
BULLET-4006-1500
1500 W PEP / 1000 W digital
Full-power HF amplifiers; contest/expedition durability
BULLET-4006-5000
5000 W PEP / 2000 W digital
High-power systems; includes CU-4-5000 (approx. 3 lb; 4 in × 4 in × 2 in)
Note: Only the matching unit power rating differs among variants; band coverage, radiator length (55 ft), and installation are the same. If the matching unit warms during extended transmit, reduce power to prevent damage.
Helpful resources
📘 Download the BULLET-4006 Quick Setup Guide (PDF)
Get on the air — anywhere
From HOA stealth installs to SOTA/POTA activations, the Palomar BULLET-4006 makes 40–6 m portable HF a breeze.
FAQs
What bands does BULLET-4006 cover?
40, 30, 20, 17, 15, 12, 11, 10, and 6 meters. Most bands are typically ≤ ~3:1 SWR; your rig’s tuner can touch up quickly as needed.
How long is the wire, and where does the choke go?
The radiator is 55 ft. Place a coax choke ~12 ft from the matching unit. Use at least 25 ft of 50 Ω coax to the radio.
LMR-400 / RG213 / RG8 feed line — how many turns?
Start with 3 turns through the choke. If more choking is needed, add a second SOFLC with another 3 turns in series.
Do higher-power models tune better or add bands?
No — coverage and tuning behavior are the same across variants; only the matching unit power rating changes.
Is the matching unit grounded?
The output is DC grounded (helps bleed static) but not RF grounded.
Which layouts work best for limited space?
Sloper and Inverted-L are fast and effective; a horizontal run between supports works too. Zig-zags and 90° bends (horizontal) are acceptable where space is tight.
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Bullet End Fed OCF Antenna System, 100-1500 Watt Options, 25 Feet, 20-6 meters+WARC, Vertical Radiator for Easy DX, SOTA, POTABullet End Fed OCF Antenna System, 100-1500 Watt Options, 25 Feet, 20-6 meters+WARC, Vertical Radiator for Easy DX, SOTA, POTASKU BULLET-2006-100List price $179.95 Save 33%$119.95On Sale
Bullet End Fed OCF Antenna System, 100/500/1500/5000 Watt Options, 95 Feet, 80-6 Meters + WARC, Vertical Radiator for Easy DXBullet End Fed OCF Antenna System, 100/500/1500/5000 Watt Options, 95 Feet, 80-6 Meters + WARC, Vertical Radiator for Easy DXSKU BULLET-8006-100List price $239.95 Save 25%$179.95Super-Choker™ Common Mode Feed Line Chokes
Palomar Engineers BULLET-4006: Compact 40–6 m OCF Antenna for SOTA, POTA & Stealth HF
Want reliable multi-band HF from 40 through 6 meters without bulk or feedpoint drama? The Palomar BULLET-4006 is an end-fed, off-center-fed (OCF) wire antenna that delivers wide band coverage, quick setup, and a compact footprint — ideal for SOTA, POTA, EMCOMM, RV/camping, and HOA/stealth installs. It uses a 55 ft radiator while your coax braid forms the other leg of the OCF system, giving you the range of a classic OCF dipole with simpler deployment.
Why OCF (and not EFHW)?
- Safer feedpoint: avoids the high-voltage 49:1 transformer typical of EFHWs.
- More bands, shorter wire: 40–6 m coverage with just 55 ft of wire.
- Cleaner operation: reduced RFI and simple portable deployment.
Key specifications
| Feature | Details |
|---|---|
| Frequency Coverage | 40, 30, 20, 17, 15, 12, 11, 10, and 6 meters (most bands typically ≤ ~3:1 SWR; touch up with rig ATU as needed). |
| Radiator Length | 55 ft wire; coax outer braid used as the other OCF leg. |
| Coax Choke Placement | Place a feed-line choke at approximately 12 ft from the matching unit. |
| Recommended Feed Line | 25 ft+ of 50 Ω coax; longer runs may affect SWR depending on soil/nearby objects. |
| LMR-400 / RG213 / RG8X Users | Use 3 turns through the choke; if more choking is needed, add a second SOFLC with another 3 turns in series.For RG-8X use 5-6 turns thru a SOFLC snap on choke. |
| Deployment Styles | Sloper, Inverted-L, horizontal between supports; zig-zag and 90° bends (horizontal) are acceptable. |
Portable & stealth friendly
Raise the matching unit as high as practical, route the radiator as a sloper or inverted-L, and keep it clear of metal or wet foliage. Add the choke at ~12 ft on the feed line and run at least 25 ft of coax back to the rig.
Setup (5 quick steps)
- Mount the BULLET matching unit on a mast/tree or convenient tie-off.
- Run the 55 ft radiator as a sloper, inverted-L, or horizontal path.
- Install a coax choke ~12 ft from the matching unit (SOFLC).
- Feed with 25 ft+ of 50 Ω coax; longer runs can modestly affect SWR.
- Check SWR across bands; touch up with your transceiver’s ATU where needed.
Recommended accessories
- SOFLC ferrite choke (12 ft from the BULLET matching unit).
- Coax noise filter near the radio to reduce common-mode noise/RFI.
- UHFMBNCF adaptor for BNC-input radios.
Notes & operating guidance
- DC grounded (not RF grounded): the matching unit bleeds static but is not an RF ground.
- Duty cycles: reduce power if the matching unit becomes warm during extended operation; plan lower duty for CW/digital.
- SWR caveat: SWR varies with height, ground, layout, and feedline length; gallery SWR plots are examples, not guarantees.
Choose Your Power Rating
| Model | Max Rated Power | Typical Use |
|---|---|---|
| BULLET-4006-100 | 100 W PEP / 100 W digital | Portable rigs up to 100 W; SOTA/POTA |
| BULLET-4006-500 | 500 W PEP / 350 W digital | Mid-power base/field use; longer duty sessions |
| BULLET-4006-1500 | 1500 W PEP / 1000 W digital | Full-power HF amplifiers; contest/expedition durability |
| BULLET-4006-5000 | 5000 W PEP / 2000 W digital | High-power systems; includes CU-4-5000 (approx. 3 lb; 4 in × 4 in × 2 in) |
Note: Only the matching unit power rating differs among variants; band coverage, radiator length (55 ft), and installation are the same. If the matching unit warms during extended transmit, reduce power to prevent damage.
Helpful resources
📘 Download the BULLET-4006 Quick Setup Guide (PDF)
Get on the air — anywhere
From HOA stealth installs to SOTA/POTA activations, the Palomar BULLET-4006 makes 40–6 m portable HF a breeze.
FAQs
What bands does BULLET-4006 cover?
40, 30, 20, 17, 15, 12, 11, 10, and 6 meters. Most bands are typically ≤ ~3:1 SWR; your rig’s tuner can touch up quickly as needed.
How long is the wire, and where does the choke go?
The radiator is 55 ft. Place a coax choke ~12 ft from the matching unit. Use at least 25 ft of 50 Ω coax to the radio.
LMR-400 / RG213 / RG8 feed line — how many turns?
Start with 3 turns through the choke. If more choking is needed, add a second SOFLC with another 3 turns in series.
Do higher-power models tune better or add bands?
No — coverage and tuning behavior are the same across variants; only the matching unit power rating changes.
Is the matching unit grounded?
The output is DC grounded (helps bleed static) but not RF grounded.
Which layouts work best for limited space?
Sloper and Inverted-L are fast and effective; a horizontal run between supports works too. Zig-zags and 90° bends (horizontal) are acceptable where space is tight.
Sometimes you need a high power common mode choke that is super effective and the Super-Choker™ products fill this need very well. All Super-Choker™ chokes use multiple turns through ferrite cores for higher choking impedance compared to our multi-bead sleeve chokes which only use one turn through multiple cores. Different ferrite mixes and turns ratios are used to optimize choking impedance in the selected product frequency range.
Super-Choker™ chokes are manufactured with 1/2″ 52 ohm coax cable (rated for full amateur radio legal limit of 1500 watts continuous (or the capacity of the coax cable at the selected frequency – good for over 5KW on 4 MHz into a matched load for example) with PL-259 connectors that can be connected to your coax feed line with simple double female barrel connectors.
Super-Choker™ chokes are ideal for high power stations and are very effective for keeping common mode current off the feed line on verticals, dipoles, and loop antennas at their feed point and also for choking coax lines at the station input to reduce common mode noise picked up by the outside of the coax braid between the feed point and the station entrance.
Ferrite core kits are available separately if you want to supply your own coax feed line.
Super Choker™ Case History:
I run an 80 meter loop antenna about 30 feet in height and have previously been using a coaxial balun common mode choke of 25 turns of RG-213 on a 6 inch form attached about 6 feet under the corner feed point of the loop (configured in a triangle). Using a Dentron 3000 antenna tuner I was able to tune all the ham bands and the lowest SWR was about 1.4 on most bands. The antenna feed line was led away from the corner of the loop and was not under the loop. Feed line length was about 105 feet as measured on the Aim 4170-TDR function.
I first placed a Super Choker™ 8010 at the antenna tuner leaving the coaxial balun in place. As I retuned the antenna tuner, the first thing I noticed was that I could now tune down to 1.1:1 on 80, 40 and 20 meters and I could not do that before. The noise level which had been running about S7 on 40 meters during the day had dropped to about S6 on my TS-870 receiver. I was pleased that the reflected power was now almost nil and the noise level was lower.
I then took the next step and replaced the coaxial balun and Super Choker 8010 with a Super Choker™ 16040 in series with a Super Choker 4010 for maximum choking power from 80-10meters. The antenna tuning was about the same but now the SWR was 1.0:1 on 80-10 meters and the noise level on 40 was down to S5. I tuned up on 20, 15 and 10 meters and worked a couple of JA’s and noticed that the noise level on 10 and 15 was not even S1 – something I had not experienced before on the 5 acre plot of land we call home.
What a welcome relief to find such a simple solution to RF feedback I had experienced and I got a lower noise level to boot!
Now to plan that 160 meter loop! I wonder what Krusty ole Kurt would use?
Bob, AK6R