HIGH PERFORMANCE

 HF RECEIVING SYSTEMS & COMPONENTS

 FROM THE HEART OF CENTRAL OREGON.

Hi-Z Antennas

8125 S.W. Larch Dr.     Culver OR  97734   USA

  A receiving high-pass filter for use with array systems. This filter is designed to provide protection for preamps and receivers from high levels of A.M. broadcast signals.

Click on the filter image for more details

A receiving band-pass filter for use with array systems. This filter is designed to provide protection for preamps and receivers from high levels of A.M. broadcast signals and higher frequency signals.

Click on the filter image for more details

   A four square array controller. This controller is designed to connect four Hi-Z antenna elements together to form a high performance receiving array for the lower amateur bands. This unit operates from a +13.8 Volt supply and will switch its major response in 4 directions with the use of 2 control wires.

Click on the controller image for more details

   The array builders friend. This is a battery operated signal source. It was designed to connect to cables or Hi-Z amplifiers for injecting a fixed signal.

The self contained unit has two modes. You can feed coaxial cables with the low Z mode or feed Hi-Z antenna amplifiers with the Hi-Z mode.

When fed directly into a Receiver input the signal is an S-9 level at 1.8432 MHz.

Click on the signal source image for more details

         Available Now!  High impedance amplifiers for shortened vertical antennas. Suitable for driving 75ohm cables and systems.

Proven K7TJR design usable in arrays of multiple elements.

Available  fully assembled and tested.

 Also available as Bare etched circuit board only, kits, or parts.

Click on the amp image above for more details.

   Available Now! Array matched and Optimized 15dB Preamplifier. Suitable for voltage amplification in 75 ohm antenna arrays.

Available fully assembled and tested.

Also available as Bare etched circuit board only, kits, or parts.

 Proven design usable in multi element precision arrays.

Click on the Preamp image above for more details.

see an actual operating array documented at www.k7tjr.com under Lees Radios

Phase measured cable assemblies available.