Monday, June 20, 2011

Collinear antenna for FM transmitter



This collinear antenna works perfectly after the installation. The antenna is basically two dipoles excited in-phase and theoritically exhibits 3 dB of gain when compared to a dipole. 3/8" aluminum tubing was used here but i suggest 1/2" will do the job even better. The quarterwave stub is made of #12awg stranded wire and is grounded at the center(null). When properly tune, this antenna should have SWR value of 1:1.1  to 1:1.2.   73 de hevir

1 comment:

  1. your first antenna the turnstile had diagram, its nice to have one for this collinear, thanks anyway.. : )

    ReplyDelete