Two new modifications have been quietly released at: www.elecraft.com/K3/k3_app_notes.htm * K3 VFO Noise Mod * K3 Extreme Signal RX Protection Mod Both modifications are presently 'preliminary' and require beta firmware release 3.24, but the latest public version is still at 3.19. -- 73 from Ian GM3SEK http://www.ifwtech.co.uk/g3sek