LF: My active whip antenna has gone noisy and insensitive

[Chris Wilson <chris@chriswilson.tv>]

30 July 2016


I have a a clone PA0RDT active mini whip antenna atop a wind up mast
that used to work well, but has recently become insensitive and very
noisy. I will pull it down later and first check the co ax. If I
remove its in shack power source the noise stops though, and I have
tried it on a battery in case the PSU had gone noisy, but no
difference in noise on battery power is seen. The circuit is at
http://dl1dbc.net/SAQ/Mwhip/pa0rdt-Mini-Whip.pdf Can anyone say if the
front end FET may have gone faulty, or what to check please? Thanks!



-- 


Best regards,
 Chris  2E0ILY                           mailto:chris@chriswilson.tv

 My        part        time        LF        grabber       is       at
 http://www.chriswilson.tv/grabber.html