HF Impedance Transformer Kits

977476497 - HF Impedance Transformer Kits
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FT400-3I, ID=3", RFI Range 1-300 MHz

Store/Ferrite Core Products/Mix 31/Ring - Mix 31 - RFI Range: 1-300 MHz
SKU F400-31-1
$39.95
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FT400-3I, ID=3", RFI Range 1-300 MHz
Store/Ferrite Core Products/Mix 31/Ring - Mix 31 - RFI Range: 1-300 MHz
Product Details
MPN: F400-31
RFI Range (MHz): 1-300 MHz
ID-B (in/mm): 3/76.2
OD-A (in/mm): 4/101.6
Height-C (in/mm): 1/25.4
Weight (oz/gm): 420 grams
Initial permeability: 1500
Case/Box lot size: 25
Frequency (MHz)/Single turn impedance (ohms): 1MHZ:14 ohms, 5 MHz: 31 ohms, 10 MHz: 45 ohms, 25 MHz: 76 ohms

(4″ OD, 3″ ID hole), available in mix 31 only

Excellent for large cables or multiple cables – use multiple cores for higher choking. Also useful when you need high turns count for high choking with large cable - works on AC or DC power lines and also coax cable lines.

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These impedance transformer kits have been designed for the Do-It-Yourself (DIY) enthusiast and Instructor workshops on baluns and ununs for antenna matching and RFI use.

The impedance transformers are classified in ratios of 2:1 (100:50 ohm) to 16:1 (800:50 ohm).  The outputs can be configured as balanced (Balun) or as unbalanced (unun) with respect to the inputs which are considered all unbalanced coax at 50 ohms.  All impedance transformers are designed for 1.8-31 MHz unless otherwise specified.