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Author Topic: Par end fed EF-SWL antenna  (Read 866 times)

Offline IZS4

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Par end fed EF-SWL antenna
« on: August 20, 2019, 1621 UTC »
I was just reading reviews for this antenna and all were great. I was thinking this might be a good choice for portable operation. $75.00 isn't outrageous, but I'm just wondering what makes this antenna better than a piece of wire and what is in the box where the SO239 is located. Could this be engineered easily? Thanks
Listening on an Icom-718 with a 135' OCF dipole or a RSP2.  Grundig G3 and MLA-30 when portable. When QRP I use a Hendricks PFR-3 I built. Coverage is 20,30 and 40 meters.

Offline ChrisSmolinski

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Re: Par end fed EF-SWL antenna
« Reply #1 on: August 20, 2019, 1646 UTC »
Looks to be a 9:1 transformer in the box on the end, standard binocular core.  Basically one of my 450 ohm cyclops antenna transformers :)

https://www.blackcatsystems.com/rf-products/cyclops_rf_ham_shortwave_radio_matching_transformer.html
Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
netSDR / AFE822x / AirSpy HF+ / KiwiSDR / 750 ft horizontal loop / 500 ft northeast beverage / 58 ft T2FD / 120 ft T2FD/ 300 ft south beverage / 43m / 20m / 10m  dipoles / Crossed Parallel Loop / Discone in a tree