1 6 balun

1 6 balun

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• 50:450 Ohm (9:1) Balun for vertical antennas - A page describing how to home made a custom 9:1 balun for a common portable wire antenna. The author suggest to use 4C65 or FT140-61 toroids instead of the common Amidon T200-2
  [ Hits: 516 | Votes: 11 | Rating: 6.72 ]
• Choking balun for 160-30 meter band - Choking balun for lower HF and MF bands. (1.8MHz - 10MHz). Requiring a choking balun to isolate the potential RF pick up on the coax cable as it runs past equipment such as computer within the radio room at lower HF and MF frequencies a simple method of winding RG58 coax onto a Powdered Iron Toroid Core was constructed.
  [ Hits: 196 | Votes: 3 | Rating: 6 ]
• BalUn for Delta-loop & Quad-loop antennas - This Guide helps you to build the 1:2 BalUn 600 Watts DIY kit step by step. If a delta-loop or quad-loop antenna is powered with a coax cable from the transceiver it is necessary to use a 1:2 BalUn. This 1:2 BalUn uses a symmetrical 1:2 impedance transformer.
  [ Hits: 286 | Votes: 1 | Rating: 9 ]
• How to Blow Up Your Balun - In this article, author examine stresses placed on common-mode chokes (aka baluns) as hams use/abuse them, examine the efficiency of simple dipole multi- band antennas and their feed systems. Stressing a Balun.
  [ Hits: 388 | Votes: 0 | Rating: 0 ]
• Measuring HF Balun Performance - If you thought you knew everything about balun performance characteristics, there is an important figure of merit you may have neglected
  [ Hits: 259 | Votes: 0 | Rating: 0 ]

• The 1: 4 Current balun - A 1:4 current balun made with 2 4C65 cores by PA1G in Dutch
  [ Hits: 775 | Votes: 1 | Rating: 2 ]
• 4:1 QRO Balun - A home made 4:1 Ferrite QRO Bal-un with a FB 241-61 Type K
  [ Hits: 813 | Votes: 5 | Rating: 6 ]
• 4 to 1 Balun - 4:1 FB 3061 ROD x 2 balun can handle 125 Watts
  [ Hits: 915 | Votes: 6 | Rating: 6.5 ]

• Cobweb Antenna - A home made cobweb antenna project made with easy to find parts 2-14 AWG speaker cables which are cut to 1/2 wavelength for each band and junction box with 4:1 Balun
  [ Hits: 265 | Votes: 4 | Rating: 10 ]

• W3EDP Antenna - W3EDP antenna for 16 - 160 Meters, works by attaching the antenna to a balun and use coax to connect the antenna to the tuner.
  [ Hits: 2146 | Votes: 2 | Rating: 10 ]

• 20m end-fed Antenna - An end-fed halfwave antenna for 20 meters band with balun pictures and description by PD7MAA
  [ Hits: 1668 | Votes: 2 | Rating: 1 ]
• 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
  [ Hits: 872 | Votes: 15 | Rating: 6.73 ]

• OCF Dipole - This is a popular antenna design as the performance is very good across the HF bands and requires little or no tuning. It is a dipole fed off center with a 4:1 current balun at the offset feedpoint. The antenna shown covers 80, 40, 20 and 10 meters with 15 meters and WARC bands
  [ Hits: 2560 | Votes: 7 | Rating: 9.43 ]
• 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 ]

• T2FD Antenna - Terminated and twisted folded dipole - T2FD is a 600-900 ohms folded dipole, terminated with resistor. Feed impedance is coupled with 50/600 ohms voltage balun. It is a wide band antenna with rather low SWR over the full designed frequency range: antenna tuner is seldom needed.
  [ Hits: 488 | Votes: 0 | Rating: 0 ]

• The Easy Way Antenna Systems - This document is a must read for anyone considering building a good low cost HF multi-band antenna system. The author combine in this document four important ingredients to produce simple but effective antenna system, like antennas of non resonant length, line attenuation, the transmatch and the balun
  [ Hits: 632 | Votes: 2 | Rating: 4.5 ]

• Windom Antenna 3.5-30 MHz - A windom multiband antenna project with pictures and diagram for the 6:1 balun
  [ Hits: 3472 | Votes: 10 | Rating: 6.7 ]

• Balun_cmr Calculate common-mode impedance - This EXCEL Program Worksheet calculates the common-mode impedance of a 1:1 Guanella (current) balun which is placed at the feed point of a balanced antenna system fed via coax.
  [ Hits: 404 | Votes: 1 | Rating: 10 ]

• mini Ring-Core-Calculator - Calculate windings on ferrite cores - The program can be used to calculate inductors (coils) and their number of turns on ferrite cores, ferrite shells and air coils. These can be used for baluns, Ununs, bandpass filters, low pass filters, resonant circuits, and more. The technical specifications of the cores are already integrated in the program. Application is free and runs on Windows 32 bit versions only. To make it run on Windows 10 64 bit need to be unzipped in a single folder.
  [ Hits: 398 | Votes: 1 | Rating: 1 ]

• The myth of SWR causing coax radiation - There are several reasons that can cause coax line radiation, most of them are related to wrong or missing use of a balun, but none can be imputed to load mismatch.
  [ Hits: 752 | Votes: 2 | Rating: 6 ]

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