Antennas By N6LF

Multi-turn loop receiving antennas for LFMF

For the next edition of the ARRL Antenna Book (the 25th) I've written a section on Multi-Turn Loop Antennas for LFMF reception.  It will be many months before this published and available from the ARRL.  I felt the topic might be of more immediate interest to the LFMF gang and have permission to post a copy of the draft: Download Chap 22 LFMF RX loops .

The ARRL note mentions direct experimental measurements of self resonant frequency.  Here is a note with more detail on the measurements and modeling comparisons between different versions of NEC:  Download Loop excerpt 2

Loop RX antennas

Multi-turn loop antennas are popular LF-MF receiving antennas and while there is lots of info on them I've recently turned up a really neat technical paper on "Coil Antennas", circa 1919 which may be of some interest.  Download Coil Antennas 1919

Comments on the WD8DSB Bow-Tie RX

Don Kirk (WD8DSB) has developed a "Bow-Tie" terminated loop receiving antenna which is interesting.  I have some comments on it: Download WD8DSB Comments. 

160m-2200m receiving antenna

The March 2015 QST article on a loop receiving antenna by DK6ED set me to thinking about a much larger version for 2200m and up.  In the process of scaling the antenna to my needs I realized that there several different operating modes (patterns) were possible which might be helpful in some situations.  The different patterns could be implemented with some simple switching in the shack.  I built that antenna and wrote an article published in Sept/Oct 2016 QEX: Download Sept-Oct 2016 QEX article .