EFLW-1K End Fed Long Wire Antenna
This is an End Fed Long Wire wire antenna that will cover all bands from 160 to 6 meters, including the WARC Bands, as well as 60 meters and MARS frequencies. It utilizes a 9:1 UNUN transformer in order to bring the impedance of the antenna to more manageable values for your antenna tuner. For some frequencies, a wide range antenna tuner might be needed.
This is an affordable wire version of popular 43 feet vertical antenna. Our wires start at 44 feet but longer lengths are recommended for coverage of 80m or even 160m band. It all depends on of available room you have to install this antenna.
It is a great antenna for HAM radio operators living in HOA controlled housing, hams desiring a very stealthy RV antenna, Field Day operations, sailboats, portable operating, attic and backyard installations, ARES and RACES, etc.
- Frequency coverage: 1.8-54MHz
- Non-Resonant on any amateur radio band, TUNER is needed.
- Wire lengths 44, 53, 73, 88 or 117 feet available
- Stranded Marine #18 AWG wire with end insulator.
- Power Handling: 1kW I.C.A.S
- Stainless Steel hardware
- Connector: PTFE SO-239
Terminated into 450 Ohms load, VSWR on 9:1 UNUN is almost flat from 1-30Mhz ( see the measured diagram in the gallery)
- 9:1 UNUN has very low Insertion loss, from less than 0.1dB at 1.8MHz to 0.25dB at 28MHz, additional loss of whole antenna system could be expected from mismatch on coaxial cable and Tuner losses (see the diagram at the gallery of S21 measurement of two back to back 9:1 UNUNs)
- The transformer is wound with PTFE (Teflon wire) on 2.4-inch diameter Ferrite toroid in order to handle 1kW at any frequency.
- It takes only moments to deploy the antenna. Pull the wire end into a tree, hang it off the balcony, lay it on the roof, hook it to a pole, hook it to a building and you are on the air making contacts.
- Most HF ham bands can be tuned by the tuner in your radio. NOTE: to tune all HF ham bands an external tuner may be required.
- It could work without counterpoise (Coaxial cable has to be at least 25feet long) but grounding at wingnut next to connector is recommended.
- This antenna can be hung in many different configurations. It can be hung as a sloper, an inverted L, hung in a straight line, zigzagged, vertical, horizontal, etc.
- Antenna polarization is determined by your installation. Vertical, horizontal, or both can be accomplished.
- Due to possible common mode currents on your feeder, we recommend using CMC-Common Mode Choke/Line isolator such as CMC-154-3K to keep RF away from you and your equipment. It will also help you on receive by filtering induced noise from various sources.