HF active antenna MFJ-1020C

Active antenna with preselector for 300kHz to 40MHz, ith adjustable amplification -5 to 15dB. Preselector with 6 overlapping ranges from 0,3 to 40MHz. To be used indoors with the included whip antenna, or with an outdoor antenna (not included) which is connected to the PL input jack. Power supply either with internal 9V battery (not included) or with external 12V DC supply (not included). Size 5 x 15 x 13cm.