Loop Antenna on Ferrite Rod. https://dl.dropbox.com/u/77650969/preamp%20loop%20BF998.JPG
Channel: franjordio
Date: 29/07/2012

Antena activa de ferrita sintonizada. Cubre desde 1MHz a 28MHz aproximadamente en dos bandas y usa dos bobinados independientes sobre una barra de ferrita. El loop de 0,8m recibe mejor, pero en cambio ésta es mucho más cómoda de transportar.


Tuned active antenna for 1-28MHz prox.  Two coils on Ferrite rod. One for MW and low bands, and other for high bands. 0,8m loops has better reception, but the size of this makes a better choice for handing. Gain control is made attenuating input to the MOSFET instead Starving current, so better strong signal perrfomance. The noise of this method is not a problem due to inherent noise in HF bands.