80 meter

303 links - and 2 categories

80 Meter Shortened Ground Plain Antenna - This antenna is a vertical loop antenna mounted on a 8 meters high grounded mast with an input impedance of 50 Ohms without a matching device - by DL2KQ
[ Hits: 446 | Votes: 1 | Rating: 5 ]
Top Loaded Vertical Antenna for 80 Meters Band - Top Loaded Vertical Antenna 3,5 MHz 80m and a 14 MHz Trap for the 20m band. The weight of this portable vertical antenna is less than 1 kg, including the ground network. The weight of the telescopic fiberglass fishing rod is another 1kg. The rod expands from 1.5 meters to 8 meters. - by DJ9RB
[ Hits: 268 | Votes: 0 | Rating: 0 ]
Dedicated 80m Vertical - A dedicaed vertical antenna for 80 meters band based on a 40 meter vertical experiment - by M0MCX
[ Hits: 223 | Votes: 1 | Rating: 4 ]

Quad Band Inverted V Antenna - An inverted V Dipole antenna for HF bands, working on 10 20 40 and 80 meters band. PDF Presentation - by AC7II
[ Hits: 385 | Votes: 1 | Rating: 7 ]
80m-40m Loaded Dipole - A dual band dipole antenna for 40 and 80 meters band. Total lenght of 26 meters, foreseen two coils at aprox 11 meters distance from center feed. - by VK5HW
[ Hits: 255 | Votes: 4 | Rating: 5 ]

Multi-band End-Fed Antenna - An excellent guide to homebrewing multi band end-fed antennas. The article, embed several drawings including diagrams and detailed pictures, illustrating the basic funcionality of end-fed antennas. The author gives some basic hints on how to build a half size antenna for 80 40 to 10 meters and a 6 meter to 40 meter configuration. It is also well described how to build the impedance transformer and the loading coils for lower bands. - by F. Dorenberg
[ Hits: 1105 | Votes: 6 | Rating: 4.5 ]

End Fed Half-Wave Antennas - An interesting article on end fed half-wave wire antennas with a couple of original experiments. Author illustrate the role of the QRP matchbox, and a 40/20 meter antenna with a center stub making it a large bandwidth antenna for 40 and 20. Includes also an 80/40 end fed with the typical coil to make it available on 80 merts band. - by Joe
[ Hits: 289 | Votes: 2 | Rating: 10 ]
End Fed Antenna with a 1:64 Matching Network - In this experiment the autor is going to explore the use of a 1:64 matching network on the End Fed Long Wire Antenna. Experiment will consist in build a 80-40-20-15-10 meter End Fed Long Wire Antenna with a 1:64 matching network from the documentation available on the internet - by buildthings
[ Hits: 872 | Votes: 15 | Rating: 6.73 ]

RX Loop Antenna for 80 and 160 Meters - Four or Five turn one meter loop antenna for 80 and 160 meter band. This home made receive only antena can be assembled in a small place. - by G1EXG
[ Hits: 248 | 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 - by G3XBM
[ Hits: 131 | Votes: 0 | Rating: 0 ]

Portable NVIS Loop for 80m to 40m - A portable (15.5 foot diameter) NVIS loop for 3.5 to 7.3 MHz. Performs well at high and low takeoff angles, and has smaller footprint than most NVIS antennas. - by Mark E. Cantrell (AE7TO)
[ Hits: 367 | Votes: 0 | Rating: 0 ]

Half Sloper Multiband Antenna - A presentation of a HF multi-band sloper antenna. This antenna project is for low band operations, and antenna presented in this article works on 40 80 and 160 meters band. Article is in Polish. - by SP5JXK
[ Hits: 795 | Votes: 5 | Rating: 7 ]

Improve your Antennas for Low Solar Activity - How to improve your transmitting antennas for very low solar activity periods, vertically polarized 160 meter antennas, horizontally polarized 80 to 10 meter antennas, single or stacked yagis, multi-tower stations - by CTU
[ Hits: 424 | Votes: 0 | Rating: 0 ]

Semi-automatic antenna tuner project - Thsi article describes a microcontroller driven semi-automatic antenna tuner capable of handling power levels up to 150 watts. The device is a low pass filter tuner manually tuned by setting the optimized L/C combination by hand and then storing the values into the EEPROM of the mictrocontroller to recall them later (seperately for each band from 80 to 10 meters including WARC bands) - by DK7IH
[ Hits: 291 | Votes: 0 | Rating: 0 ]

Build your own Windom Antenna - Building a Windom HF Antenna. A PDF file presentation about homebrewing a windom antenna for the HF bands with formulas for 40 and 80 meters bands and step by step guide on making a 4:1 balun to feed the antenna. - by N7RXE
[ Hits: 772 | Votes: 2 | Rating: 10 ]

WebSDR Wismar ^updated - This WebSDR is located in Wismar in the north of Germany JO53RV and operated by Frank Goehling DO7AX. There are four RTL2823U USB dongles with three Ham It UP up-converters for 80m/40m/20m and a RTL2832U for the 2m Band. The Antenna for 80/40/20m is a 84 meters Delta Loop. - by DO7AX
[ Hits: 466 | Votes: 5 | Rating: 10 ]

Field Day Operations in Australia - A page with lots of pictures of John Moyle Field Day 2012 operating from 80 meters to 70 centimeters - by VK4ADC
[ Hits: 98 | Votes: 0 | Rating: 0 ]

A Three-Band One-Tube Novice Transmitter - A homebrew radio transmitter project, based and inspired by the original 30 Watts input on 80 50 and 15 meters band transmitter by W11CP - by KC9KEP
[ Hits: 345 | Votes: 2 | Rating: 10 ]

QRP Portable Rig for 80-40 meters - A home made portable QRP transceiver designed to work on 40 or 80 meters SSB band. - by VK3YY
[ Hits: 196 | Votes: 0 | Rating: 0 ]

A 3.5MHz Receiver for SSB and CW - Homemade receiver for 80 meters band. The receiver works very well (in fact better than some of its successors), especially the AGC makes listening to 80m QSOs a real pleasure. Sensitivity is not cutting-edge, but on a full-size short-wave antenna it is by fare sensitive enough. - by DL5NEG
[ Hits: 250 | Votes: 2 | Rating: 6.5 ]