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

FB200-43 - 1" ID, RFI Range 10-250 MHz - Excellent for high power impedance transformers, common mode chokes

SKU FB200-43
$13.95
On Sale
List price $23.50 Save 41%
Bulk pricing available for quantities of 2 units or more
1
Buy more, save more
QuantityPrice per itemDiscount
2 items$11.9514% off
10 items$10.9522% off
100 items$9.9529% off
Save this product for later
Customer reviews
No reviews yet. Only signed-in customers who bought this product can leave reviews. To leave a review, sign in
Share this product with your friends
FB200-43 - 1" ID, RFI Range 10-250 MHz - Excellent for high power impedance transformers, common mode chokes
Product Details
MPN: FB200-43
Initial Permeability (@ 10KHz): 850
Material: MnZn
Max cable size - in/mm: 1/25.4
OD (A) - in/mm: 2.0/50.8 (+/- 1.3mm)
ID (B) - in/mm: 1.0/25.4 (+/- .8mm)
Length (C) - in/mm: 1.5/38.1 (+/- .75mm)
Z (ohms per bead - single turn 10 MHz): 118
Z (ohms per bead - single turn 25 MHz): 193
Z (ohms per bead - single turn 100 MHz): 336
Z ohms (per bead - single turn 250 MHz): 280

Ferrite Slip On Bead, ID = 1in/25.4mm, Mix 43

Application Note: use 9 turns of 1/4" coax for good feed line choke from 3-54 MHz, 5KW

Also useful for choking DC cables, large coax sleeve chokes, and impedance transformers