21 meg yagi

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

5 Element yagi for 10 meters - A directional 5 element yagi antenna for 28.5 Mhz in spanish

A 2 elements yagi antenna for 28 Mhz - An inexpensive antenna for 10 meters band in spanish

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

A 7el VHF yagi - DK7ZB'7 element yagi beam

K7HC Mega HexBeam - Pictures taken during the construction of a Hexbeam antenna for 30 and 40 meters

40M 3 element beam - History project and dimensions of a 3 element yagi beam for 40 meters band

The YU7EF Duo Band Antenna - The original project of a dual band yagi antenna for 50 and 70 mhz, published on dubus 2/2007 by YU7EF

G7CNF dual band yagi for 4 and 6 m - A 5 Element dual band, single feed solution for 4m and 6m built by Nigel Coleman.

Antenna construction hints - Hints about Jpole Yagi and Quad antennas

1.8 to 21 Mhz Magnetic Loop antenna - Magnetic loops are a compromise antenna and performance will be down on a full size-wire antenna particurlarly on lower HF Bands. This article compare this magnetic loop with a full-sized wire antenna on 80 meters by VK3YE

Handheld Yagi - This is the handheld yagi can be used for working satellites when mobile. Offer 420 - 450 MHz 70cm bandwidth and the worst SWR is 1.3:1

The VHF Quagi - There have been many half-hearted attempts to combine a Yagi and a Quad. Most have produced questionable results. Well, here are the "true" facts, the real dope, the hot scoop. K6YNB in QST April 1977

AO-27 yagi antenna design - A 7 elements yagi antenna for the AO-27 satellite reception

Corner reflector antenna - Do you need a high gain antenna? Have you suffered on picking up interference from unwanted direction? You need a directional antenna but a 12 element Yagi will be too attractive!

1200Mhz 40elements YAGI - A table with element size and spacing for a 40 Elements yagi antenna for 1200 Mhz

Building VHF antennas - An article with notes on home-brewing a 2 meter yagi antenna, a 70 CM "potato masher" and a 70 cm yagi antenna

6 Element Yagi for 432 Mhz - U6YRN 6 element yagi antenna for 430-450 Mhz in spanish

IZ3DVW/B - 21,145.7 MHz from JN55VF

i1-21171's blog - SWL and amateur radio by IZ1CRR

YAESU FL-2100Z Amplifier Repairs - The FL-2100Z amplifier referenced in the following images is the 6-Band model covering 10m thru 160m (no WARC bands) and not the 9-Band version that included the WARC bands. Modifications, schematics and manual

Icom 821H vs Yaesu FT-847 - A thread about Icom 821H and Yaesu FT-847

Yagi-logper - Yagi-logper is a linux GPL program to model a Yagi or Log-periodic antennas with horizontal cylindrical dipoles.

NiCad battery charger - A basic nicad battery charger using a single medium power transistor.

Homebrew Butterfly Capacitor - Butterfly capacitors are hard to find, expensive but they can be home made by PY1AHD