transformer

87 links - and 1 categories

Rectangular Loop antenna for 2 meter band - VK1NAM
An interesting and easy to build loop antenna for VHF bands that present a feedpoint ...

[ Hits: 279 | Votes: 1 | Rating: 1 ]

BalUn for Delta-loop & Quad-loop antennas - hfkits
This Guide helps you to build the 1 2 BalUn 600 Watts DIY kit step ...

[ Hits: 286 | Votes: 1 | Rating: 9 ]
9:1 Unun Impedance Transformer - VK1AD
A 9 1 unbalanced to unbalanced unun impedance transformer based on a published design by ...

[ Hits: 195 | Votes: 1 | Rating: 4 ]
9:1 Balun and Unun - ON7IR
Homebrew a 9:1 transformer and measurement for testing purposes with a miniVNA

[ Hits: 109 | Votes: 0 | Rating: 0 ]

A Reversible Beverage at ZL3IX - ZL3IX
How do two wire reversible direction Beverages work an excellent document that explains fundamentals of ...

[ Hits: 524 | Votes: 0 | Rating: 0 ]
Matching transformers for Beverage - VA7ST
Building some proper matching transformer for loop on ground and Beverage antennas

[ Hits: 76 | Votes: 0 | Rating: 0 ]

The Pop-Up Vertical 2.0 - WB3GCK
Basically this antenna is a 23 foot wire fed through a 4 1 un un ...

[ Hits: 254 | Votes: 0 | Rating: 0 ]
8010 Enfed Antenna - F5NPV
With this antenna the coverage is 80 40 20 15 and 10 meter band without ...

[ Hits: 142 | Votes: 0 | Rating: 0 ]
TEFV Terminated End Fed Vee Antenna - VU3DXR
The Terminated End Fed Vee Antenna TEFV is a travelling wave antenna with constant current ...

[ Hits: 188 | Votes: 2 | Rating: 6.5 ]

1:49 unun for end fed half wave antennas - vu3dxr
1 49 UNUN using two stacked FT240 43 cores for end fed halfwave antenna To ...

[ Hits: 399 | Votes: 10 | Rating: 8.1 ]
End-Fed Half-Wave Antenna for 20m 40m 80m - VA3KOT
How to Design and Build a Field Expedient End Fed Half Wave Antenna for 20m ...

[ Hits: 142 | Votes: 1 | Rating: 4 ]

The Quarter-wave stub - LA8OKA
The Quarter wave stub can be used for many purposes If it is left with ...

[ Hits: 136 | Votes: 1 | Rating: 8 ]

Transformers for low-bands antennas - IN3OTD
Transformers can be used as part of a hybrid combiner or as phase inverters for ...

[ Hits: 153 | Votes: 2 | Rating: 5.5 ]

Outdoor 80m/40m bands Magnetic loop antenna - PA0NHC
No matching adjustments needed Directly perfect match to 50 Ohms using a remotely switched wideband ...

[ Hits: 225 | Votes: 0 | Rating: 0 ]

The Classic Beverage Antenna Revisited - HH Beverage
This is a QST Article published in January 1982 by W1FB D Demaw and HH ...

[ Hits: 567 | Votes: 1 | Rating: 6 ]

Performance of 49:1 Ferrite Core Transformers - AF7NX
There are quite a few recipes for building a suitable transformer for an end fed ...

[ Hits: 151 | Votes: 4 | Rating: 7 ]

The Squid Pole Wire Antenna Re-visited - VK4ADC
The author explores enhancing the performance of a 7 meter fiberglass squid pole wire antenna ...

[ Hits: 91 | Votes: 0 | Rating: 0 ]

OM0ET Antennas - om0et
Maker of small and compact multiband QRP UltraLight Magnetic Loop Antennas and UnUn transformer for ...

[ Hits: 313 | Votes: 7 | Rating: 7.57 ]

SM1000 FreeDV Adaptor - rowetel
The SM1000 allows you to run FreeDV without a PC Connect the SM1000 to your ...

[ Hits: 129 | Votes: 0 | Rating: 0 ]

WIFI Remote FUCHS ATU for EndFed Antenna - F5NPV
The Fuchs Antenna tuner with a resonant circuit as a coupler The Fuch Antenna Tuner ...

[ Hits: 117 | Votes: 0 | Rating: 0 ]