trap vertical roof

10 meter Verticals Comparison - A comparison of 10 meter vertical antennas using elnec

TX Four Square Antenna - A 220-ft tower that has five catenary lines, each about 500 feet long. Four of these lines, running NE, SE, SW, and NW support four 1/4-wavelength wire verticals used in a 160-meter four-square antenna.

Double-L Antenna For 80 and 160 - A vertical antenna for 80 and 160, fed with a single feed line that is simple, effective, and requires no ground system.

Trap Dipole for 17 and 20 - M0XDX trap dipole for 17 and 20 metres made from two fibreglass telescopic 5 metre long fishing poles.

Aerial Calculations - G4URH calculations to design your own antennas, ground plane, half wave antennas, Quad Antennas and 5/8 verticals

The Sloping Vertical Dipole - The radiating part is the vertical half of the dipole. You get nearly radiation in all directions, the second half must not be in 180°. The table below show how we get an impedance for direct feeding of 50Ohm coax. by DK7ZB

80m / 40m Dipole - Build instructions for the 80-40 dipole antenna including Ugly Balun 40m trap and 80m Dipole

End-fed Vertical and J-pole - Understanding Gain differences, j-pole and end-feed vertical antennas.

Stealthy HF multi-band Antenna - This is a design for a stealthy HF multi-band vertical wire antenna using a tree as a supportby G7AQK

Horizontal vs Vertical Antennas - CX2UA article on differences of vertical and horizontal antennas in spanish

Tuning HF Coaxial Antenna Traps - The problem with making your own trapped HF antennas is usually getting the coaxial traps tuned to frequency.

Portable Antennas for 2 m and 70 cm - Comparing SWR of vertical HT antennas for VHF and UHF

The W4INF Multiband Vertical - HF antenna for any band you desire, you build yourself. Is a basig ground plane antenna

Ground Plane Verticals - Ground Plane antennas and common mode

Home Brew a 80 40 meter Vertical antenna - YF1AR 80 to 40 meter vertical antenna project

The vertical Double-Zepp - The vertical Double-Zepp 2x7 m is a very simple, effective 8-Band-antenna. The end of the Dipol must be 5-10 m above the ground

Antenna Engineering - Antenna Engineering specialise in producing a range of high quality aluminium HF verticals ranging from mono band single element verticals to multi element phased arrays.

LZ Antenna - LZ Antennas LTD is specializing in manufacturing antennas HF multiband Yagi and vertical antennas. LZAntenna is based in Bulgaria

MALtronix - Maltronix, HF antennas, dipoles and verticals, switching power supply, power distribution, antenna switch

Telegraph Key Collection of Tim Watson - Telegraph Key Collection, ham radio telegraphy, cw, radio telegraphy, ham radio key, morse code key collection, key collecting, El-Key, Nikey, Vibroplex Champion, Vibroplex Blue Racer 2000, Bug, J-38, J-47, Navy Flame Proof key, Bencher, CT 599 MB key, amateur radio, amateur radio history, cw history, morse code history

FT2000 Filter Installation - Step by Step - Installing the NS Roofing Filter into the FT-2000

FTdx5000 Filter Setup and MARS mod - Installation of the 300 Hz Roofing Filter in the Yaesu FTdx5000 and MARS modification

Assembling GAP Titan DX Antenna - Pictures of GAP Titan DX vertical antenna assembled by IW5EDI

X7 Cushcraft at E73m - Cushcraft X7 antenna design is based on Log periodic-Yagi and has real advantage over conventional multiband trapped tribanders.

Homemade Antenna Rotator Controller - The Antenna Rotator Controller is unique in that it senses, displays, and controls to the earth’s true magnetic field. The compass sensor, mounted in a waterproof enclosure, is attached to the mast and sends its signal to a microcontroller. By kg4jjh