BF981 VHF preamp by CT2GQV Not happy with the airband receiver and with some free time I decided to change the frontend mixer from the NE602 to an SBL-1; without any preamp the SBL-1 is only goo to listen to local FM boadcast stations or shortwave transmitters.
http://speakyssb.blogspot.com/2010/02/bf981-vhf-preamp.html