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Author Topic: Looking for suggestions for a circa 4100 kHz directional antenna  (Read 353 times)

Offline ChrisSmolinski

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I'd like to build an antenna for the 4100 kHz unlicensed beacon band, with directivity towards the desert SW where most of these beacons are thought to live. While I've got a fair bit of room for large antennas, I don't really have the adequate space to install a long Beverage (my first choice) aimed that direction (about 270-280 degrees based on great circle maps), without running a *lot* of coax into the woods to locate the feedpoint there.

So looking for suggestions for some potential antenna designs. One thought is a KAZ/D-KAZ (or another MWDX antenna) scaled down for that band. Any input on the feasibility of that, or other antennas I should be considering?
Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
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Offline RobRich

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I would say flag or pennant, but since it can be stationary with fixed directivity for your purpose, perhaps even just an EWE antenna. Tweak the terminating resistor value to peak your desired band.
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Offline redhat

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Some folks have had good luck with the D-Kaz on lower frequencies, especially medium wave.  Perhaps this could be scaled down slightly for 4 MHz?
http://durenberger.com/wp-content/uploads/2019/11/D-KAZ-COOKBOOK-Pt1.pdf

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Offline M R I

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After you implement your antenna choice. Let us know your results.
Mix

Offline Ray Lalleu

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Look at the design of reversible Beverage antennas :
they use a double wire, and components to reverse the beam,
so you could get a feed point near your house.
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Offline syfr

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2 element inverted vee array?
Kiwsdr x 2. TenTec Paragon/NRD535