FT240-52, ID=1.4", 10 Pack, RFI Range 200-1000 MHz, FREE USA SHIPPING!
Product Details
RFI Range (MHz): 200-1000 Mhz
ID-B (in/mm): 1.4/35.6
OD-A (in/mm): 2.4/61
Height-C (in/mm): .5/12.7
Weight (oz/gm): 106 grams
Initial permeability: 250
A(L): 325
Inductor Range (MHz): < 30
Transformer Range (MHz): 1-60
Case/Box lot size: 100
for transmission line transformers, RFI suppression - Jerry Sevick book most used mix
50 ohm coax to 75 ohm balanced output baluns are useful for low (< 1 wavelength) dipoles exhibiting 75 ohm characteristic impedance or for matching to balanced ladder line whose endpoint impedance is near 75 ohms.
50 ohm coax to 75 ohm CATV coax connections are easily done with a 1.5:1 unun with SO-239 connectors on input and output. Likewise 50 ohm coax to unbalanced verticals or loads near 75 ohms can be matched with a 1.5:1 unun.