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

1042221011 - 5:1 Baluns/Ununs
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50:450 ohm (9:1) CUBE™ Balun, 1.8-61 MHz, 1.5 KW, SO-239 UHF Input, BBTD, Traveling Wave Antennas

Store/Antenna Products/CUBE Impedance Transformers (<1:1, 1:1, >1:1)/50:450 ohm (9:1) Transformers
SKU CB-9-1500TS
$119.95
Bulk pricing available for quantities of 2 units or more
Output Connectos
1
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QuantityPrice per itemDiscount
2 items$111.957% off
10 items$103.9513% off
100 items$99.9517% off
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50:450 ohm (9:1) CUBE™ Balun, 1.8-61 MHz, 1.5 KW, SO-239 UHF Input, BBTD, Traveling Wave Antennas
Store/Antenna Products/CUBE Impedance Transformers (<1:1, 1:1, >1:1)/50:450 ohm (9:1) Transformers
Product Details
MPN: CB-9-1500TS (top studs), CB-9-1500EB (eyebolts)
Country/Region of Manufacture: USA
Input ohms/Output ohms: 50 in / 450 output
Frequency Range < 2:1 SWR (MHz): 1.8-61
PEP Power Rating (watts): 1500
Input Connector: SO-239
Output Connector(s): Top Studs/Side Eyebolts
Hardware Type: Stainless Steel
Enclosure Size: 4" x 4" x 2"
Weight (pounds): 3
Antenna Compatability: Folded Dipole, T2FD, BBTD, ALE

Model CB-9-1500 is a 9:1 multi-core, balanced output balun housed in a water resistant enclosure with top stud/wingnuts (TS) or Eye bolts (halyard top hoist, side eye bolts/outputs) used to translate a 50 ohm input up to 450 ohms at RF power levels up to 1500 watts PEP when used with a matched load. With matched 450 ohm load the SWR over the frequency range 1.8 to 61 MHz is less than 2:1 on the coax feed side. Actual SWR is under 1.25:1 from 1.8-180 MHz so very useful for 30-150 MHz also - see graphs for specific details

Features

* Wide Frequency Range 1.8-161 MHz, usable to 180 MHz < 1.25:1 into resistive load

* High Power, 1500 watts PEP (up to 61 MHz)

* Convenient side tab mounting feet

Many designs for BBTD antennas using 9:1 baluns at HFLINK.COM

We also have the 9:1 with the built-in 1:1 choke/balun in part# CB-9-1-1500EB


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