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:
Also available as a balanced output – CB-5-1500
Ferrite Flat Cable RFI/Noise Filter, 1.35" wide slot RFI Range 10-500 MHz, 1 Piece
FSB43-1.35-1
$5.95
In stock
1
Product Details
Initial Permeability (@ 10KHz):
850
Max cable size - in/mm:
1.4" wide,
Dim
mm
mm tol
nominal inch
inch misc.
A
49.5
+/- 2.5
1.948
_
B
33.70
_
1.327
_
C
32.3
+/- 1.6
1.272
_
D
7.70
+/- 0.5
0.303
_
Cable Information
Max Diameter
Max Dimension
Solid Equivalent
Flat Cable Cores
0
0
33.70mm x 1.30mm
_
-
Excellent for reducing RFI/Noise into/from flat data,/video cables up to 34mm wide and 1 mm thick. Very useful suppression up to 500 MHz using mix 43 material.
Save this product for later
Ferrite Flat Cable RFI/Noise Filter, 1.35" wide slot RFI Range 10-500 MHz, 1 Piece
FSB43-1.35-1
$5.95
In stock
1
Product Details
Initial Permeability (@ 10KHz):
850
Max cable size - in/mm:
1.4" wide,
| Dim | mm | mm tol | nominal inch | inch misc. |
| A | 49.5 | +/- 2.5 | 1.948 | _ |
| B | 33.70 | _ | 1.327 | _ |
| C | 32.3 | +/- 1.6 | 1.272 | _ |
| D | 7.70 | +/- 0.5 | 0.303 | _ |
| Cable Information | |||
| Max Diameter | Max Dimension | Solid Equivalent | Flat Cable Cores |
| 0 0 |
33.70mm x 1.30mm | _ | - |
Excellent for reducing RFI/Noise into/from flat data,/video cables up to 34mm wide and 1 mm thick. Very useful suppression up to 500 MHz using mix 43 material.
Save this product for later