4-Band: 40, 20, 17, 12, 10, & 6 meters. 68 feet (23'+45') long.
This antenna can be used as an off-center fed shortwave antenna to provide continuous coverage from 500 kHz to 60 MHz SWL.
This antenna is handcrafted with materials carefully tested & selected by Chris Ni4L for quality & durability, based on its intended use and price point:
- Wire: #14 AWG 7 STRAND Copper Hard Drawn with .030 High Density PE Black Jacket. Nominal OD .133”. NOTE: This is not the regular Home Depot #14 house wire, but a rugged hard drawn stranded copper wire.
- Balun: Manufactured by Unadilla, the W2AU 4:1 balun is power rated at 1.5 kilowatt SSB, with a heavy-duty built-in center insulator and a large eyebolt to support the antenna without placing undue strain on the BALUN or terminals. The W2AU is the preferred Balun of Amateurs worldwide. W2AUs operate at a low VSWR from 1.8 to 40 mHz, and handle power up to 2 KW PEP (at SWRs of less than 3:1). W2AU Baluns are transformer designs with ferrite cores to provide 95% minimum coupling efficiency. Each has a built-in lightning arrestor, hang up hook, and 600 lbs of pull-apart strength in a weatherized, rugged package using only stainless steel hardware and quality materials. The 4:1 balun matches 50(75) ohm unbalanced coax to 200(300) ohm.
- Each wire is swaged with 1/8" aluminum double ferrules-sleeves at the balun and at the ends.
- Each connection to the balun is crimped and covered with adhesive-lined heat shrink.
No trimming needed - fully assembled, complete and ready to go with end-insulators, crimped center, and end connections. Add your 50-Ohm coaxial feed line, suspension rope, and away you go! It can be hung Flat or as an Inverted V configuration.
Some of the advantages of the OCF antennas:
- Eliminate send/receive tuner loss – Quickly switch bands and eliminate a tuner as one more thing to adjust. (NOTE: Always check the SWR BEFORE using this with any antenna tuner).
- Since one wire leg of the antenna is shorter, the OCF is more convenient to erect than a regular center-fed dipole.
- Less coax is required.
Remember to stay away from power lines!
Reviews Hide Reviews
OCF 4 bands 40-6 HF window antenna Copper Hard Drawn
I'm impressed with the build quality of the NI4L windom. I bought this antenna for my Daughter. Last year I bought a buxcomm for myself that fell down after a week. The end crimps were extremely cheap. When I emailed buxcomm about the problem they never replied. I vowed to never buy anything from them again. After seeing the NI4L antenna I knew I made the right decision! Thank you for a solid antenna. It works as advertised.
So Far, So very Good!
Just got the new OCF 4 Bands 40-6 HF Windom Antenna Copper Hard Drawn, installed this early evening (April 8th). Just for a "test run," I tuned it up on 17 meters with the ATR-20 (and, utilizing a Yaesu FT 450D combined with an AL-811) and immediately had a very solid 5.9 QSO with a nice gentleman in Santa Cruz, ARUBA! It's up only 20' at one end and 17' at the other. And, barely clears and crosses one peak of my roof, near the center of the antenna by about 2 feet... Not the best of antenna locations... HOWEVER, it worked! I can't wait to get back on-the-air late tomorrow for "Test Run, Part 2." Also, I don't know if it is good band conditions early this evening or the antenna... or, using some new RG-213/U coax... but, the noise level is the lowest I've ever heard. I'll send another report, in a few days. The first impressions are great! 10 meters is the one I've had the most difficulties with tuning on my older G5RV. So, 10 meters will be part of the next test on your antenna. (UPDATE) Since April 8th, was able to easily tune antenna to 10 meters. However, band conditions have not been good to make a contact. Then, went to 15 meters, for the first time ever, and had my first time QSO on 15 with COSTA RICA. Looking forward to expanding the DX horizons. Have enjoyed the contacts with Chris Fox, he quickly responds to his emails, questions, etc... and, provided first rate service.