BF Series Balun Transformers
50U:135B, 10kHz-30MHz

The 0409BF Balun Transformer is designed specifically to enable accurate longitudinal unbalance measurement of cables and circuits in the 0.01 to 30MHz frequency range using the techniques given in CCITT recommendations G.117 and 0.9. The exceptionally good inherent longitudinal balance in the frequency range of interest ensures reliable measurement of other transmission parameters such as attenuation, crosstalk, and return loss at higher frequencies.