FB240-61
Large 2.4 inch, 61 ferrite mix. Type K,. Recommended use in HighPower HF BALUNs.

cat#    FB-240-61     Similar to: FT-240-61  

OD 2.40 inch, ID 1.400 inch, Ht 0.500 inch, Material 61 µ =125

This core is 2.4 in. OD x 1.4 in. ID x .5 in. high and is
constructed of # 61 ferrite, material type K, which has a
permeability of 125. Recommended use in HighPower
HF BALUNs.

* MATERIAL 61 (µ = 125 )  High 'Q' and Temperature stability
performance for frequencies 0.2 to 55 MHz . Use in broad band
BALUNS to 200 MHz and frequency attenuation above 200 MHz

The A_L of this core is 173.  We have found this core to
have the best broadband impedance performance
range within the frequency range, 1.5 to 55 MHz.

Used primarily in HF transmission line transformers
(BALUN) .2 to 55 MHz.

OD = 60.33mm, (2.4 inch)
ID   = 36mm (1.4 inch)
Ht   = 12.70mm (0.500 inch)