B1MM91
Dual-core ferrite core, current type, 9:1, 1.5 to 30 mHz,

cat#    B1MM91

Dual-core ferrite core, current type, 9:1,  1.5 to 30 mHz,

The 9:1  Multiple ferrite cores, current type, BALUN is most often used with antennas fed with 450 ohm ladder-line, Long Wire antennas, and antennas having approximately 450 ohms impedance at the feed point; 1.5 to 30 mHz. 1200W SSB, Not rated for FSK/RTTY/AM Be sure to seal all terminals with Coax Seal Cat #  CS 104.   Case is High-Impact, light weight, UV resistant, Poly-vinyl composition.

*Style and color may vary.    Performance per above specs.