Sudden TVI Problems – Solved

Posted on by Simone

Recently my apartment building decided to change the TV antenna system because of the latest upgrade of TV broadcasting to the DVB-T2 (Digital Video Broadcasting – Second Generation Terrestrial) standard. My 10-year-old samsung LCD TV stopped receiving signals during last summer. Surprisingly, my TV was known to support the new digital broadcast signal, and also…

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70cm Quadruple Quad

Posted on by Simone

Quadruple Quad by Richard Price BSc. MSc. GW0VMW A suitable high gain 70cms antenna for SOTA operation was sought that did not have the drawbacks of a long Yagi antenna, principally a narrow beamwidth and bandwidth. This is important as operating from a hilltop on a relatively under used band requires as broad a catchment…

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1:4 Current Balun

Posted on by Simone

Article by N5ESE Here’s yet another handy little Altoids QRP project. This makes a great travel companion to the 1:1 current balun and is intended to aid in tuning a balanced antenna or feedline that has a high impedance (100-600 ohms). I’ve even used it successfully to tune a 20 meter, 1/2-wave vertical with 4…

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1:1 Current Balun

Posted on by Simone

Article by N5ESE Here’s another handy little Altoids QRP project. For Field Day 2002, I wanted to use my new Elecraft K1 (which has an automatic antenna tuner built-in) to feed a full-wave loop on 40 meters, to use on all bands 40 – 15. To preserve the feedline balance (I used 300-ohm ladder line),…

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N5ESE’s 87 ft Inverted L Portable Antenna?

Posted on by Simone

Here’s one of my favorite antennas for QRP portable operation. It provides easy setup in the field, is extremely compact, and provides excellent performance on all bands 80 thru 15 Meters. It’s a non-resonant antenna, but don’t think for a minute that you lose anything from that. Using a field-radial system as shown, the feedpoint…

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