sloper trap

Shortened dipole for 10 & 40m bands - A shorten Dual-Band Dipole with overall length of about 11 m. For this antenna traps are substituted by inductors, in order to cover the 10 & 40 m. Bands.

40/20 Trap Dipole - An easy to make trap dipole antenna for 40 and 20 meters

Trapped dipole for 80 and 40 m - This article explores a theoretical model for the losses of an 80m / 40m trapped inverted V dipole antenna system using a bootstrap coax trap, but does not examine the pattern of the antenna.

Trapped dipole for 40 80m - I0SJC trapped dipole for 40 and 80 meters, traps done with 170 turns 1 mm diam, on a 3.2 mm cilinder in Italian.

Antenna Trap Calculator - Design your own antenna trap online

An Improved Multiband Trap Dipole Antenna - This improved multiband trap dipole introduces a new trap design and a change in trap location. The antenna features double-coaxial-cable-wound traps having lower reactance and a higher quality factor (Q) than earlier coax-cable traps by W8NX

Feeding an End-Fed Antenna  ^pop - End-Fed antennas are NOT balanced systems; but neither are verticals, ground planes, discones, windoms, zepps, Marconis, half-slopers, et al. Additionally, the low-impedance antenna port of your transmitter/receiver is not balanced.

Easy tuning an building of traps - A new and simple method for tuning traps. You need 2-3Watt of your TRX and two homemade coupling coils by DK7ZB

6-Band Windom antenna  ^pop - Theory and construction of a novel trapless center-loaded off-center-fed (cl-ocf) dipole or windom antenna for the 80, 40, 30, 20, 15 and 10m hf amateur radio (ham) bands

Offset multiband trapless antenna - Simple, easy to build, low cost, compact, multiband By Robert Wilson, AL7KK

Another vertical antenna for 30, 40 and 80 meters - This article is to describe a multi band DX-dedicated antenna offering a minimum of compromises (such as lossy traps), for the hams not having any high-support

Sloper SWL antenna - A slooper design as a HF antnena by John Beattie, California. USA

80 m sloper - KC4HW show mounting hoardware of his 80 meters sloper antenna

Sloper Antenna Tests - Mark Connelly - WA1ION tests on slooper antennas

IK4DCS 80-160 mt Sloper antennas - My Sloopers antennas for 80 and 160 meters

Base Loaded 160M Half-Sloper Antenna - K0EMT 160 meters sloper antenna

ARRL Sloper Antenna - Members only techical pages about Sloper antennas

Coax Traps from a Modeling Perspective - About Coax Traps, NC4FB examine the operation of coax traps through modeling.

PA3HMP Antenna Traps - An original way to build antenna traps

Traps for 40/80 m dipole - I6DVX article on hoembrewing traps, using vetrnonite instead of common coax cable.

Building traps with coax cable - Tips on how to build a trap using common coaxial cable and coax trap software, by F5JTZ in french

Vertical trapped antenna - An HF multiband trapped antenna in french

W3DZZ multiband dipole - The multi-band trapped dipole is resonant on approx 3.7, 7, 14, 24 7 28.5 Mhz. The overall top length needs to be approximately 32.9 Meters

Extra Class Question Pool - Valid until June 30, 2008

Adur Communications - Specialist in the design and supply of Radio Communications Equipment and Systems. West Sussex England. Antennas, traps and baluns inline isolators, Outbacker Antennas, Mobile Mounts and Accessories