df antennas

df antennas

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• Isolation chokes for 160m verticals - An article on how much impedance you really need and how small can be a chooke for top band vertical antennas by N6LF
  [ Hits: 631 | Votes: 0 | Rating: 0 ]

• Stacking Yagis - An interesting PDF file presentation made by N6BV on Stacking Yagi antennas
  [ Hits: 738 | Votes: 1 | Rating: 4 ]

• Multiband end fed antennas - This is a 200 Watt PEP step up transformer for end fed full and half wave antennas without radials, designed as a 200 Watt PEP
  [ Hits: 2274 | Votes: 9 | Rating: 7.32 ]

• 160-RV - Top Band G5RV Antenna - How to turn a G5RV antenna into a 160 meter band antenna with easy to find parts. A G5RV adapter for tob band by Thomas AD1B
  [ Hits: 2915 | Votes: 5 | Rating: 5.8 ]

• Magnetic Loop Antennas - A presentation about magnetic loop antennas, includes components, differences among small loop and resonant loops, advantages and electrical characteristicsof mag loop antennas
  [ Hits: 993 | Votes: 1 | Rating: 10 ]

• HF Multiband end fed antennas - A multiband end-fed antenna that cover 3.5 to 30 Mhz using a 1:64 Balun based on a FT240-43 core
  [ Hits: 3725 | Votes: 6 | Rating: 4.67 ]
• 5 Band Telescopic Vertical Antenna - 5 Band 1/4 wave Telescopic Antenna. The 20m to 10m, antenna is simple and cheap to make, and has a performance that matches commercial antennas but at cost considerably lower. The design was purposely based on a telescoping fibre glass fishing rod as this allows it to be easily stowed away in the car.
  [ Hits: 3608 | Votes: 3 | Rating: 9.33 ]

• NVIS Antenna Design - A presentation on designing Near-Vertical Incidence Skywave (NVIS) antennas and all related EZNEC models in a single zip file or the single presentation in PDF File
  [ Hits: 489 | Votes: 1 | Rating: 9 ]

• The Basics of Patch Antennas - This article explores the basic concepts of patch antennas. Topics include principles of operation, impedance matching, radiation pattern, circular polarization, bandwidth, efficiency, alternative feed types, stacked patches and higher mode behavior.
  [ Hits: 805 | Votes: 1 | Rating: 9 ]

• Portable or Emergency VHF Antennas - Ground Plane - 1/4 wave vertical, J-Pole, 3 Element Yagi Beam and simple antenna supports
  [ Hits: 1010 | Votes: 1 | Rating: 8 ]
• Antennas for portable operations - Article describing various type of portable antennas, from verticals, to dipoles, vertical dipoles, random wire with tuners, and end-fed antennas
  [ Hits: 500 | Votes: 0 | Rating: 0 ]

• Revisiting the Resonant Feedline Dipole - An article on RFD antennas, resonant feed-line antennas
  [ Hits: 679 | Votes: 2 | Rating: 10 ]

• All About Antennas - A free five part series on antennas that covers many aspects of antennas, from radio wave propagation, to feed lines, type of antennas, connectors, adaptors and antenna switches by Bob Grove, publisher of Monitoring Times
  [ Hits: 1180 | Votes: 3 | Rating: 7.5 ]

• The Yagi-Uda Antenna - An interesting presentation on history and characteristics of Yagi-UDA antennas
  [ Hits: 661 | Votes: 0 | Rating: 0 ]

• LNR Precision - LnR Precision Inc. is a North Carolina based company that specializes in Par EndFedz amateur radio antennas and MantiZ QRP Transceivers. Their most popular products include End-Fed QRP portable antennas and HF FX Series QRP Transceivers.
  [ Hits: 959 | Votes: 0 | Rating: 0 ]

• HF Antennas for Beginners - 30 Meters and Below - An interesting article for beginners that guide new hams to find what kind of antenna to install, evaluating wire aerials, commercial verticals and how to setup antennas in restricted lots
  [ Hits: 858 | Votes: 1 | Rating: 4 ]

• TW4040 Manual - PDF manual of the TW4040 The Adventurer MonobanderTM TransWorld Antennas
  [ Hits: 632 | Votes: 0 | Rating: 0 ]
• TW2010L Manual - TW2010L The Adventurer Lite TransWorld Antennas instruction manual PDF file
  [ Hits: 461 | Votes: 2 | Rating: 5 ]

• Vector network analyzer comparisons - Test comparison of different Vecto network analyzers, like N2PK VNA , AIM4170 by W5BIG , TenTec TAPR VNA , IW3HEV miniVNA , MFJ 259B using a HP 3577A VNA as reference by Rudy Severns N6LF
  [ Hits: 791 | Votes: 0 | Rating: 0 ]

• PL259 Surge Arrestor - Limiting static surges on dipoles, verticals or end fed antennas
  [ Hits: 904 | Votes: 0 | Rating: 0 ]

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