About the project It’s a portable dual-band antenna working principally on 10 meters but also close to the 30 meter band. It’s compact, light, economical and doesn’t need any radial.If you would like to repeat my experiment you will first need a big plastic flower pot (around 70cm high, 60 top diameter and 30 cm…
Category: HF Antennas
How antenna traps work
Article by VE3GK I was assembling a HY/GAIN, TH6DXX, a 10 – 15 and 20 meter beam the other day and thought there might be some interest in the function of the traps. I have also included some practical information on howto build traps for a multi-band, 10-15-20 meter antenna. RESONATE PARALLEL NETWORKS REVIEWED: When…
K9FD Receiving Loop
RECEIVING ANTENNAS The K9FD Receiving Loop The Answer To Suburban DXing On the Low Bands – by K9FD Editor’s note: Merv Schweigert, K9FD, has been working jusl about everything on the 40, 80 and 160 meter band” this season. In this article he shares some of his experiences with receiving antennas. lf you live on…
Make a magnetic loop antenna for 7-21 MHz
This antenna has several advantages, not least being only 1 metre diameter! This loop relies on being horizontally polarised and receives only the magnetic wave, thus as most noise in the domestic environment is vertically polarised and electrical wave, it delivers low noise to your transeiver/receiver, which makes for nice clean listening. In addition any…
160 meters antennas problems and solutions
Article by Bill Orr W3SAI on solving problems on 160 meters band antennas
80 Meters 2 Element Quad Antenna
Introduction A rotating quad for 80 meters are you crazy? well i did it and it worked well. now i’m not saying that i think anyone else be as nuts as me but it seemed to fun be idea at the time. i remember calling into a local 80 meter net on 3.755 mhz asking…
HF Receiving loop antenna
Receiving HF signals at my location is a compromise situation due to the antennas I use and the high noise environment in the city. Although my transceiver has good selectivity and excellent filters, I suffer from high noise conditions that at times make receiving a chore. This is true for both weak-signal DX as well…
4 Elelemt Yagi Beam Antenna for 20 meter
On picture 1 you can see the GK 4 element 20m yagi on a 40ft boom on the construction pedestal for the 20m stacks All of the yagis were built on the pedestal you see under the beams. Omega match on this new yagi for the 4X4 stacks has been adjusted using a TS-50 and…
End Fed antenna
This end fed type of antenna was marketted in the UK and is a useful system for the portable set-up. Being a half wave, no radials or counterpose wires are needed. As the impedance will be high at the end of the wire, some form of matching unit is needed and a simple parallel tuned…
The RockLoop Antenna
W9SCH described this small loop in Sprat 60 and it has proved useful to the QRPer, especially where space is at a premium. It is basically a variant of the usual magnetic loop, using a toroid balun to get a reasonable match on the three bands. A slow motion drive would prove useful on the…