vertical 25

160 Meter Antennas at W8JI - 160-meter vertically polarized transmitting antennas center around this 200-foot tower

KE4UYP Linear loaded vertical antenna - This is a vertically and horizontally polarized antenna the Linear loaded 1/4 wave length vertical radiator introduces very little loss for 80 or 160 meters

Dual Band Vertical On Autopilot - A good 20 & 40 meter dual band vertical using a novel tuning method that provides automatic band switching.

40 M. triangular full wave vertical loop

YLRADIO - Full wave delta loop - This Delta Loop is a three-sided antenna suspended high in the air by vertical supports, such as tall evergreen trees. Recommended height is 40 feet or more at highest point, but higher is better.

80 m 3/4 wave LLV - This is a vertically polarized Phased array. The left Vertical wire is 180 degrees out of phase

80m L Antenna. RSBEV's - Reduced Size Broad Elevation Verticals

The Bazooka vertical  ^pop - This is a deviation from the wonderful antenna the Double Bazooka.

Build a bazooka dipole  ^pop - Build Your Own Bazooka Dipole: A VHF/UHF vertical dipole made from coax

The full-wave loop antenna - These omnidirectional antennas offer Horizontal polarization, and about 2.1 dbd of gain. They are much quieter than a dipole or a vertical, have a broader bandwidth and will usually out perform a dipole antenna.

An automatically tuned 7-30MHz mobile antenna - This is a base-loaded vertical antenna that mounts on the car's roof. The loading coil is designed as a variable inductor, with a three-legged chariot that travels up and down inside the coil, with grooved brass wheels running on the coil turns, and driven by a slotted rotor tube.

Multiband vertical antenna - An article with pictures on a 80-10 mt vertical antenna with an Unbalanced-Unbalanced balun in italian

NVIS: Near Vertical Incidence Skywave - Introduction to NVIS advantages and disvantags.

Radial systems and ground - Radial systems for elevated and ground mounted vertical antennas by SteppIR

W5AJ Towers - Some of the interesting shots of the W5AJ Rohn 25G tower

DK7ZB 144 mhz Yagis - High gain, good pattern and acceptable bandwidth. These aims can be realized with a radiation-resistance of 25-35Ohms, because the 28-Ohm-feedpoint is very simple to match.

Cross-Yagi antennas - For two purposes a Cross-Yagi can be useful Satellite work or if you need both vertical and horizontal polarization for terrestrial contacts

6m Half wave vertical - This antenna is very useful for receiving or scanning purposes, but you can use it for transmitting, too. It is 2,94m long and has a pi-configuration (Collins-Filter) for the matching.

Sound samples of digital transmissions - Sound samples of the transmission modes recorded at 11025 samples per second, mono and the message in all of the samples is the same: "the quick brown fox jumps over the lazy dog 1234567890".

ON0MTV Streaming ATV - Live ATV video streamning 1255 Mhz

ZeroFive Antennas - Vertical antennas for all HF bands, expecially 80 40 20 meters bands

NEC4WIN - NEC4WIN is a 32 bits commercial antenna simulation software based on MININEC3 developed by the Naval Ocean Systems Center in the 70s and 80s. It runs under Windows and can be used to simulate, analyze and optimize wire antennas, beams, verticals, etc. NEC4WIN has limitations. They are the same as Mininec3 on which the engine is based.

Javascript antenna calculations - Javascript online calculators for dipole 5/8 verticals with radials, and delta loop antennas

11 KW Linear amplifier by I0JX  ^pop - Use 4CX10000D / 8171, RF output power of 11 KW in key-down carrier on all bands. Power was measured with a Bird 4712 wattmeter and a 25 KW slug

VHF linear amplifier pictures - 4CX250B X2 K2RIW style 2m amplifier