Instructions

ENDFEDZ



EF-20QRP

20M END FED HALF WAVE ANTENNA

ENDFEDZ ARE MONO BAND ANTENNAS. USE ON BANDS OTHER THAN

THE DESIGN BAND WILL RESULT IN SIGNIFICANT COAX RADIATION

AND MAY RUIN THE MATCHBOX

PACKING LIST OF INCUDED ITEMS:

 EF-20QRP antenna

 PL-259 to BNC male adapter (to use BNC equipped coaxial cable if desired)

 End insulator, manufacturer Spiderbeam

 Tuning stub

 This manual

ASSEMBLY

1. This antenna is essentially a half wave dipole with one important difference– the feedline

is at the end of the antenna.

2. In order to have the least possible influence on the antenna, insulated lines are

recommended for attachment to the insulators. The antenna may be suspended

horizontally, vertically or sloping. Portable operation is easily accomplished by

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ENDFEDZ EF-20QRP 20M END FED HALF WAVE ANTENNA ENDFEDZ ARE MONO BAND ANTENNAS. USE ON BANDS OTHER THAN THE DESIGN BAND WILL RESULT IN SIGNIFICANT COAX RADIATION AND MAY RUIN THE MATCHBOX PACKING LIST OF INCUDED ITEMS:      EF-20QRP antenna PL-259 to BNC male adapter (to use BNC equipped coaxial cable if desired) End insulator, manufacturer Spiderbeam Tuning stub This manual ASSEMBLY 1.
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suspending the far end from a tree limb and letting the matchbox hang just above the ground. 3. The antenna has been used from hotel rooms by hanging the matchbox end just outside the window and letting the far end hang, or preferably pulling it away from the building with a guy attached to the end insulator. 4. Tuning is best accomplished by using an antenna analyzer attached to the far end of the coaxial cable that will be used with the antenna.
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Fig.
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SPECIFICATIONS Polarity: Design Z: Frequency of operation: V.S.W.R. Bandwidth: Power Handling: Weight: Length: Hardware: Connector: Radiator: Depends on mounting configuration 50 Ohms 14.0-14.350 MHz. 300 kHz 1.5:1 25 watts SSB/CW, 12.5 watts digital 5 ounces 33’0” Stainless Steel Silver/Teflon SO-239, PL-259 to BNC male adapter included #22 AWG Poly Stealth EndFedz ® Vibroplex LLC 1001 N. Broadway St. Knoxville, TN 37917 (865) 309-5073 www.vibroplex.com vibroplex@vibroplex.