EF-SWL

PAR EndFedz are now being manufactured exclusively by LNR Precision. Please contact them for pricing/availability.

The Par Electronics EF-SWL is an end-fed short wave antenna optimally designed for 1-30 MHz reception. The radiator is 45 feet of genuine #14 black polyethylene coated Flex-Weave wire.

The radiator wire is custom made for us. It is a stranded #18 copperweld with a slippery polyethylene jacket. Breaking strength is 280 pounds. Very flexible yet small diameter. The black polyethylene jacket is also very abrasion resistant. The UV resistant matchbox houses a wideband 9:1 transformer wound on a binocular core. Unlike other transformers, external stainless studs on the matchbox allow the user to configure the primary and secondary grounds for best noise reduction at their particular location. Examples are given in the manual. Output is via a silver/Teflon^® SO239 UHF connector (ready to accept a PL-259). Lead-in coax cable is not provided.

The radiator also attaches via a stainless stud allowing it to be removed, or replaced with a different length radiator for experimental purposes. The included manual shows typical radiation patterns for selected frequencies through out the HF spectrum. (This is a receive-only antenna).

See the Monitoring Times review of the EF-SWL.

See the EHAM reviews of the EF-SWL.

For a better understanding of low noise and grounding, look at the following links:

http://web.archive.org/web/20030701222251/anarc.org/naswa/badx/antennas/low-noise_antenna.html

http://groups.google.com/group/rec.radio.shortwave/msg/5fd8fe1179a5c6c8

EF-SWL SPECS
DESIGN FREQUENCY	1-30 MHz
TRANSFORMER	9:1 RATIO
GROUNDING	USER CONFIGURABLE
RADIATOR LENGTH	45’
RADIATOR MATERIAL	168 STRANDS #36 BLACK POLY COATED FLEX WEAVE
CONNECTOR	SILVER/TEFLON SO-239
HARDWARE	STAINLESS STEEL
POLARITY	USER CONFIGURABLE

Custom machined no-snag end insulator

EF-SWL

EF-SWL Box