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Arrays of K9AY Loops RX Antenna Solutions


With the low bands benefitting from the current sunspot minimum, receive antennas are important forDXers


Arrays of K9AY Loops RX Antenna Solutions



Antennas Receiving Links

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Invisible DX Antenna for the Low Bands
This paper describes a multi-band DX antenna for the 160m-40m amateur radio bands

Dual-Flag Receive Antenna
The antenna is made up of two rectangles 30-feet long by 20-feet tall

Un'antenna in ferrite per 40/80 metri
The simple simple design includes two BFX89, one potentiometer and a variable air condenser, plus a handful of resistors and capacitors

An active passive for rtl-sdr up converter
Receiving antenna for lf/mf/hf as well a passive transmission and reception antenna for vhf/uhf


Linear-loaded-short-dipole-21mhz

Linear loaded short dipole 21Mhz For my amateur radio activities on the HF bands I only have a 3.6 m wide balcony available for antennas. After some study I decided to experiment with a shortened dipole for the 15 m band

Rx antennas 4Square Rx Vertical Array

Rx antennas 4Square Rx Vertical Array My frequency design of 1.825 MHz a 90 degrees line would be 33,70 metersinstead of the previously calculated 33,27 m

A simple SWR Meter is to be used at HF

A simple SWR Meter is to be used at HF An SWR meter provides information about how well matched is your antenna with the transmitter and how well power is being radiated