q transformer

38 links

Balun Construction - The design of Ruthroff broadband voltage transformers
[ Hits: 2364 | Votes: 10 | Rating: 6.5 ]
RF Balun Transformers - This application note is designed to help the reader understand how balun transformers can be used in today's RF/Microwave communication applications.
[ Hits: 2141 | Votes: 1 | Rating: 3 ]
Switchable MTFT for Wire-Antennas - A switchable Magnetic Transformer for Transmitting for various impedances
[ Hits: 1216 | Votes: 89 | Rating: 7.98 ]
Antenna Balun - What is an antenna balun, why and when do you need it, type of transformers, impact on SWR and feed line efficiency.
[ Hits: 1328 | Votes: 1 | Rating: 8 ]

Beverage Antennas - So you want to build a Beverage Antenna. This article offers insights on building a two-wire Beverage antenna for better reception. Key points include using long wire (at least a wavelength, ideally two), keeping it straight and away from vertical conductors, and sloping ends for noise reduction. The author recommends copper clad wire and mentions transformer design considerations for later discussion.
[ Hits: 6543 | Votes: 5 | Rating: 7.2 ]
K1FZ Beverage Antenna Transformers - The K1FZ series of beverage antenna transformers are what you need to utilize your beverage antenna to its full potential
[ Hits: 3238 | Votes: 5 | Rating: 8 ]
Beverage transformer notes - In this article, the author discusses the importance of good transformers for Beverages, especially for common-mode isolation. The author recommends #43 ferrite for the transformer, and provides the turns required for different core types. The author also recommends using lower permeability ferrites for better performance at lower frequencies.
[ Hits: 1319 | Votes: 1 | Rating: 10 ]
Beverage and transformers - Why Beverages need good transformers by VK3APN
[ Hits: 2240 | Votes: 2 | Rating: 9 ]

End-Fed 6-40 M Multiband Antenna - This project produces an inexpensive, multiband, end fed HF antenna matchbox, quick and easy to setup. This project creates a trifilar wound, 9:1 UNUN toroid matching transformer. Handles 100W and need an antenna tuner.
[ Hits: 1996 | Votes: 4 | Rating: 8.25 ]

The quarter wave transformer - A transient analysis of an inpedance transforming device, by W9DMK, in pdf format
[ Hits: 1005 | Votes: 1 | Rating: 1 ]

Receive 4 square antenna - N6RK receive 4 square antenna with transformer coupled antennas and true hibrid combiner
[ Hits: 1680 | Votes: 1 | Rating: 7 ]

QRP Z-Match Tuner 40-10m - The Z Match is really a basic L Match consisting of a series capcitor and variable shunt inductor, coupled to the antenna using the RF transformer action.
[ Hits: 1801 | Votes: 0 | Rating: 0 ]

OH7SV Matti Hohtola Ham Projects - The most modern QRP transceiver in 2004,Direct Conversion HF Transceiver with DDS LO, 50 ohm to 200 ohm HF wide band transformers, Wilkinson splitter for RX measurements, Windom baluns 2001/2004, Ferrite rod antenna for 80 meter, Magnetic Loop Antenna for 80 m, Mascot Switched PSU 9320 modification to 8A peak current, 150W MOSFET linear amplifier for 80m, 80 m HF SSB/CW Transceiver
[ Hits: 20374 | Votes: 36 | Rating: 8.11 ]
The FD4 (FD3) Windom Antenna ^updated ^pop - The 4-band Fritzel model FD4 is a special version of a Windom antenna. It is a half-wave long on the lowest frequency, and is fed from a coax cable through a transformer inserted in the wire at one-third from one end
[ Hits: 53320 | Votes: 96 | Rating: 5.37 ]

Antenna Europe - Antenna Europe is an Lithuanian ham radio HF antenna manufactured specialized in Quad Antennas. Makers of Cubical Quad Antennas, Yagi Antennas, Antenna switches, Transformers and Robinzon Antennas
[ Hits: 1277 | Votes: 1 | Rating: 1 ]

Peter W. Dahl Co. - Quality amateur radio transformers and electrical supplies
[ Hits: 1043 | Votes: 2 | Rating: 4.5 ]

Variacs - Variable Autotransformer - Use these Variac auto transformers for specific application requirements that include, but are not limited to, home coffee roasting, tube amps, and more.
[ Hits: 337 | Votes: 0 | Rating: 0 ]

Electronix Express - Online shop for all electronics needs. Cables, Buzzers all kind of electronic components capacitors, inductors, relays, resistors crystals transformers, hardware like knobs screws nuts and washers, opto electronics, diodes and transistors, soldering desoldering products, test equipmemt and tools
[ Hits: 1066 | Votes: 2 | Rating: 8.5 ]

Antique Electronic Supply - Antique Electronic Supply has a complete line of vacuum tubes. We feature Svetlana vacuum tubes for amateur radio, broadcaasting and audio applications. We have over 700,000 new old stock tubes to choose from. We also have a complete line of transformers, featuring Hammond and One Electron. Capacitors, resistors, parts, books, etc. Most orders shipped within 24 hours. Major credit cards accpeted. E-mail for free catalog!
[ Hits: 11730 | Votes: 31 | Rating: 4.72 ]