2 meter pa

234 links

2 Element Wire Yagi for 10 meters band - A page with an embedded video about a two elements yagi antenna for 28 MHz based on the original antenna design by VE7CA
[ Hits: 283 | Votes: 1 | Rating: 8 ]

VHF Bi-Square Beam Antenna - 2 Wavelength ,2 Meter Bi-Square Beam , 5dbd gain. This antennas are very cheeap to build and their radiation pattern is similar to a figure 8 with maximum signal through the loop but they may be used as a near-omnidirectional antenna
[ Hits: 188 | Votes: 2 | Rating: 9 ]

Half-Length Dipoles for 40 Meters - Complete collection of the four main parts of this excellet research on modelling and designing half wave dipole antennas for 40 meters band, covering all aspects beginning from full wave length antennas, to shortened, loaded and reshaped dipoles
[ Hits: 386 | Votes: 2 | Rating: 10 ]

Square Halo Antenna for 10 and 20 Meters - How to build a limited space 10 and 20 meter band Square Halo DX antenna. A horizontally polarized antenna for 10 and 20 meter band, which is suitable for a limited space.
[ Hits: 241 | Votes: 1 | Rating: 9 ]

Quad Loop Antenna for 50 MHz - Building A Full-Wave Quad Loop Antenna for 6 Meters. This is an easy antenna to build and the materials cost about $15-20. It exhibits 1.8dB gain over a 1/2-wave dipole. Using an open-wire parallel feedline (commonly called ladder line) with an antenna tuner, it tunes up on the 10m band as a 5/8-wave loop as well
[ Hits: 200 | Votes: 1 | Rating: 1 ]

Magnetic Loop HF antenna - An homebrew HF Magnetic loop made with 2m length of 6mm diameter copper pipe formed into a near circle as the low loss inductor, a short length of coax as a capacitor,a short length of mains cable, again as a fixed tuned capacitor, a tunable 365pF air spaced capacitor, and a small Jackson C804 airspaced variable with a small 3-35pF trimmer in parallel
[ Hits: 131 | Votes: 0 | Rating: 0 ]
Portable magnetic loop antenna - A portable loop antenna, made with a 3 meter loop resonates with the chosen capacitor from just below 7MHz to about 28.300MHz which makes it usable on the bands from 40m to 10m.
[ Hits: 167 | Votes: 2 | Rating: 9 ]
2 meter Magnetic Loop Antenna - VHF Antenna in a Lunchbox, The Magnetic Loop on Two Metres. The two metre magnetic loop is a compact antenna which can easily be hung up under the eaves, the carport, or any other place where space is limited including indoors
[ Hits: 525 | Votes: 1 | Rating: 1 ]

Short Antenna for 40-30-20 Meters Band - This page describes an entirely simple, One-Knob matchbox that will match this antenna efficiently on 40, 30 and 20m, using a simple circuit that can be switched between series-resonant and parallel-resonant with just one banana jumper
[ Hits: 238 | Votes: 1 | Rating: 7 ]

Homebrew an OCF Off-Center Fed Dipole Antenna - This type of antenna is a popular antenna design as the performance is very good across the HF bands and requires little or no tuning. It’s a dipole fed off center with a 4:1 balun at the offset feed point. The antenna shown covers 80, 40, 20 and 10 meters. The formula can also be used to adjust the overall length to cover more or fewer bands and the resulting overall length. 160-10m, 80-10m or 40-10 meters depending on your available space. Other bands will require a tuner.
[ Hits: 198 | Votes: 3 | Rating: 6.67 ]

2 Meter Portable Yagi Antenna - 144MHz 2m Portable Yagi VHF Beam Antenna. This page contains construction details on a 2 metre 144MHz VHF Yagi beam antenna, designed for portable use.
[ Hits: 135 | Votes: 0 | Rating: 0 ]

IAT Interactive Antenna Table - IAT is an excel sheet table evaluate parameters of VHF UHF antennas edited by Vladimir UR5EAZ. The difference between this tool and the existing VE7BQH Antenna Table is the use of G / T and C / N instead of the G / Ta parameter. In this table, Vladimir applies the ITU recommendations to assess the noise properties of a radio receiving system and shows the advantage of the G / T concept over the G / Ta concept when choosing an antenna.
[ Hits: 106 | Votes: 4 | Rating: 9.5 ]

AGCW-DL QRP Contest - The AGCW-DL invites all radio amateurs to participate in the annual QRP CONTEST. Annually on the second Saturday in March from 1400 to 2000 UTC. 80-10 meters bands except WARC
[ Hits: 46 | Votes: 0 | Rating: 0 ]

OK1WC Memorial MWC Contest - A CW contest running every Monday, from 1630 UTC to 1729 UTC on 40 and 80 meters band
[ Hits: 107 | Votes: 2 | Rating: 10 ]

HD8R Galapagos 2021 - DX Pedition to Galapagos will be active from October 26th to November 7th, from 6 to 160 meters (including Warc bands) on CW, SSB and Digi modes with at least 4 stations on the air at the same time.
[ Hits: 112 | Votes: 1 | Rating: 10 ]

PY2GN SDR Brazil - WebSDR Pardinho SP Brazil providing access to HF bands 160 80 40 20 15 11 meters bands.
[ Hits: 136 | Votes: 2 | Rating: 7.5 ]

Unpredictable Aspects of 160 meter Propagation - Come learn why it is very difficult to predict propagation on the top band. Ionospheric Variability, Time Variations of Ionospheric Parameters, Atmospheric Gravity Waves, Ionospheric Absorption and The Role of Negative Ions.
[ Hits: 65 | Votes: 0 | Rating: 0 ]

Daily Sunspots groups - All daily drawings of the sunspot groups and USSPS produced by INAF - Catania Astrophysical Observatory from 2009 up today are available in this page. The drawings of sunspot groups and pores are maken by a Cooke refractor (150mm/2230 mm) on a 24.5 cm diameter projected image of the Sun.
[ Hits: 80 | Votes: 0 | Rating: 0 ]

Cigarette Pack for 20 meters Revised - Revision of the Cigarette Pack 14MHz SSB QRP Micro-Transceiver
[ Hits: 138 | Votes: 1 | Rating: 10 ]

A Simple Field Strength Meter - Mad your own simple FS meter. It is the simplest thing to make and is good enough to see if the antenna under test is radiating more power than your old ground plane, old mobile vertical or just radiating at all in a particular direction or in all directions.
[ Hits: 160 | Votes: 0 | Rating: 0 ]