28mhz 21mhz

ZL antenna for 15 meters - Production of a ZLspecial antenna (for 21MHZ).It explains about the way of making a 2el ZLspecial antenna by ja6hic

Cubical quad 4 elements for 28MHz - Quad antenna for 10 meters band in french by F6ITS

Homebase10 Antenna for 28MHz - The Homebase10 is a simple to make wire halo antenna for 10m (28MHz) built using parts available from the local DIY store.The resulting antenna is very effective on 10m despite its small size and light weight.

5el 28MHz OWA Yagi Priority listing - 28-29MHz with an SWR less than 1:1.1 and good performance

6 element 28 MHz LFA Yagi - Six elelemt yagi for ten meter band, designed with the very latest PSO computer optimisation engine.

A 6 element OWA Yagi for 28MHz Priority listing - This is a high-gain, wideband OWA Optimised Wideband Array Yagi which covers the 10m band with an SWR of less than1.1:1 from 28-28.900MHz.

HF Copper Loop  ^pop - A small transmitting loop antenna for 14MHz and 21MHz. This is an antenna you might consider if you have limited space, by Lloyd Butler VK5BR Based on material originally published in Amateur Radio, 11 1991

HF Copper Loop for 20 and 15 meters - A Small Transmitting Loop Antenna for 14MHz and 21MHz. This is an antenna you might consider if you have limited space, by Lloyd Butler VK5BR

Small loop antenna for 15 and 20 meters - A Small Transmitting Loop Antenna for 14MHz and 21MHz. This is an antenna you might consider if you have limited space by Lloyd Butler VK5BR

21Mhz 4el Yagi Antenna Priority listing - A simple to build OWA Yagi with direct 50 Ohm feed. Easy to build with limited tools. 4 elements yagi for 15 meters band by G0KSC

7elements 21MHz OWA Yagi - An Excellent 15M compact 7el OWA Yagi for the 21MHz band. SWR remains below 1.1:1 from 21-21.45MHz. Tapered elements in Metric and USA sizes

6 elements OWA Yagi for 21 MHz Priority listing - Optimised with the very latest Particle Swarm Optimisation techniques, a superb 15M OWA Yagi with excellent all-round performance.

A vertical dipole for 7MHz - A vertical dipole for 7MHz and 21MHz by OH3GGQ

Dual Band Yagi 28Mhz and 50Mhz Priority listing - NO Traps or coils, NO matching required. Direct 50 Ohm feed. Easy to build and nothing else like it! Enjoy 50/28 with one feedline to a dual band high gain Yagi by G0KSC

Inverted V Dipole for 10 15 20 meters - Inverted V Trapped dipole antenna for 14MHz, 21MHz and 28MHz ham radio bands.

Antennas for HF mobile operation  ^{updated  pop} - The following description should give you guidance on how to build a mobile antenna for HF bands yourself, using a very cheap CB-mobile whip antenna base. Antennas for mobile operation 7Mhz ,10Mhz, 14Mhz, 18Mhz, 21Mhz, 24Mhz,28-430Mhz

4 element LFA Yagi for 28MHz  ^updated Priority listing - The lastest PSO (Particle Swarm Optimisation) techniques where used to produce this fantastic 10m antenna. Excellent performance from a short boom. USA/UK and European tube sizes.

K6FRC Beacons - 50Mhz 28Mhz 13.5Mhz amateur radio propagation beacons by K6FRC

F6ITS ham blog - F6ITS ham blog with detailed description of quad antennas for 432, 144 and 28MHz band

Operating the 28MHz (10m) Band - Excellent page on operating 10 meters band by G3XBM

KN-Q10 Manual in English - KN-Q10 Assembly Manual four band (3.5, 7, 14 & 21MHz) 5W SSB/CW transceiver kit Translated by BD6CR/4,

JA3MHV Amplifiers - 4CX1000A x2 AB1GG Power Amplifier, 21MHz 15W and 3.5/7MHz 20W SSB Transceiver by JA3MHV, 50/144/435MHz 80W Linear Amplifier

10 11 meters RF Power Amplifier - AM/FM/CW QRP RF Power Amplifier for the HF 10 or 11 meterband (28MHz/27MHz)

The Ideal 28MHz Beacon - What constitutes the ideal 28MHz beacon from the listener's perspective by G0AEV

Antenna pre-amplifier for 10 m - A simple & effective antenna pre-amp for 10m. Band (28-29.7 MHz)