5:1 Baluns/Ununs

5:1 CUBE™ Unun – Model CU-5-1500 (50:250 Ohm, 1.8-61 MHz, 1.5KW PEP)

Application. For traveling wave, end fed or portable 20-31 foot vertical antennas the 5:1 unun makes a good transformer for converting 50 ohm coax to a 250 ohm feed point. If you use the antenna on multiple bands, the feed point impedance may not always be 250 ohms and use of the unun at high (>350 ohms) or low (<100 ohms) will require reduced power input or the unun may have its power ratings exceeded and damage to the unun may occur. The (5:1 conversion ratio will change for loads other than 250 ohms unbalanced.

Typical application:

CU 5 1500 antenna - 5:1 Baluns/Ununs

Also available as a balanced output – CB-5-1500

442300435 - 5:1 Baluns/Ununs
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FSB75-1/2, ID=1/2", RFI Range 150Khz-10 MHz, Bulk Pack of 10

Store/Ferrite Core Products/Mix 75/Snap On - Mix 75 - RFI Range 150 KHz-10 MHz
SKU FSB75-1/2-10
$114.95
10
$16.50
1
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FSB75-1/2, ID=1/2", RFI Range 150Khz-10 MHz, Bulk Pack of 10
Store/Ferrite Core Products/Mix 75/Snap On - Mix 75 - RFI Range 150 KHz-10 MHz
Product Details
Country/Region of Manufacture: USA
Initial Permeability (@ 10KHz): 5000
Material: MnZn
Max cable size - in/mm: .5/12.7
OD (A) - in/mm: 1.14/29
ID (B) - in/mm: .514/13.1
Length (C) - in/mm: 1.14/29
Z (ohms per bead - single turn 200 KHz): 20
Z (ohms per bead - single turn 500 KHz): 58
Z (ohms per bead - single turn 1 MHz): 102
Z (ohms per bead - single turn 2 MHz): 70
Z (ohms per bead - single turn 5 MHz): 50

Ferrite Snap On, ID = .514in/13.1 mm, Mix 75, Bulk pack of 10

Excellent for AC/DC power cables on switching power supplies and data/audio/video cables for AM broadcast RFI suppression.

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