out of band

126 links

Shortened dipole for 10 & 40m bands
A shorten Dual Band Dipole with overall length of about 11 m For this antenna ...

[ Hits: 4138 | Votes: 1 | Rating: 1 ]

W5GI Mystery Antenna - W5GI ^pop
W5GI Mystery Antenna is a multi band wire antenna that performs exceptionally well even though ...

[ Hits: 139403 | Votes: 123 | Rating: 7.55 ]

JA7KPI Windom antenna for 40-80 - JA7KPI
The total length of this antenna is 41m height is about 11m and diameter of ...

[ Hits: 7716 | Votes: 8 | Rating: 6.25 ]

Echelon-Log Beverages - W8JI
About beverage antennas Enhanced F B Beverages Bandwidth of Directivity arrays This article describes two ...

[ Hits: 1861 | Votes: 1 | Rating: 10 ]

Open Wire Feed Line a second look - N1II
Put up the longest dipole you can fit feed it with open wire line connect ...

[ Hits: 2682 | Votes: 8 | Rating: 6.69 ]

The G5RV Multiband Antenna
A French translation of the ARRL antenna compendium chapter about the G5RV Multi band antenna ...

[ Hits: 1639 | Votes: 0 | Rating: 0 ]

W4JOH Cobra Antenna
The original Cobra antenna is a multiband 160 or 80 to 10 meter designed by ...

[ Hits: 1711 | Votes: 1 | Rating: 10 ]
What make the carolina windom so good
The off center fed CAROLINA WINDOM provides outstanding performance on all bands This includes all ...

[ Hits: 6615 | Votes: 3 | Rating: 4.67 ]
Some plain facts about multiband vertical antennas
There is considerable confusion as to what exactly a multiband vertical antenna is The confusion ...

[ Hits: 1912 | Votes: 1 | Rating: 7 ]
A Stealthy HF Coat Hanger Antenna
A multiband stealth antenna Tuner is required The antenna is made from a 15 500 ...

[ Hits: 7403 | Votes: 5 | Rating: 9.4 ]

Windom Antenna with 4:1 balun
The Windom is an Off center wire multiband Antenna The old version was fed just ...

[ Hits: 8028 | Votes: 9 | Rating: 6.89 ]

ZS6BKW variant of the G5RV - richard
The ZS6BKW variant of the G5RV claims to offer multi band coverage without the need ...

[ Hits: 7998 | Votes: 12 | Rating: 7.75 ]

Southern California Repeater and Remote Base Association
SCRRBA is a volunteer organization providing coordination of a number of heavily utilized amateur radio ...

[ Hits: 741 | Votes: 0 | Rating: 0 ]

Russian VHF Trophy - Aleksej UA3PNO
For carrying out of bilateral QSOs on band of 2 meters 70 and 23 centimeters ...

[ Hits: 652 | Votes: 0 | Rating: 0 ]

Sights and Sounds of Digital Signals
Preview the waterfall signature of various digital signals and listen to the sound of the ...

[ Hits: 1047 | Votes: 3 | Rating: 6.67 ]

Near-Real-Time F2-Layer Critical Frequency Map
This map can be used to determine the frequencies that will always be returned to ...

[ Hits: 5271 | Votes: 24 | Rating: 4.84 ]

Is HF propagation reciprocal
Some test circuits using the ACE HF System Simulation Visualization software about reciprocal propagation on ...

[ Hits: 524 | Votes: 1 | Rating: 7 ]

FilterCAD
A free computer aided design program to help users without special expertise in filter design ...

[ Hits: 11771 | Votes: 28 | Rating: 5.03 ]

11 KW Linear amplifier by I0JX
Use 4CX10000D 8171 RF output power of 11 KW in key down carrier on all ...

[ Hits: 24613 | Votes: 33 | Rating: 7.86 ]

Interdigital bandpass filter designer
Fill out the form to design a bandpass filter as described in the January 1985 ...

[ Hits: 1118 | Votes: 6 | Rating: 7.67 ]