6:1 Balun and Unun for 300 ohms antenna to 50 ohms co-axial. Jerry Sevick

Description

CWS  6:1 Balun and Unun Combination. Current Type. Custom Designed by Jerry Sevick W2FMI Series
High Power K-type Powder Coated  Core 6:1 ratio;
Can be used to match either a 300-ohm balance antenna to a 50-ohm co-axial input, or a 300-ohms unbalanced antenna to a 50-ohm coaxial input.
Frequency Range: 1.5 - 30 Mhz.
Built using Weatherproof box for outdoor use. Designed for used in outdoor with rain, snow, or sunny hot weather condition. Note that it is not water proof and there is no need for waterproofing. All the parts used will not corrode or oxidize when exposed to the environment. Most of our customers have been using our balun and unun outdoors for over 20 years without any problems with the weather.
Specifications:
Frequency Range:
1.5 - 30 MHz
Ratio: 6
:1
Termination Impedance (Ohms):
3
00 balanced or 300 unbalanced
Termination Location:
Top
Termination Type:
Ceramic feedthrough
Enclosure Type:
Weatherproof box
Enclosure Material:
Metal, powder coated
Core Type:
K-Type High Power Ferrite core
Power Handling (CW/SSB):
1 kW / 5 kW
Power Efficiency
: 97%
Enclosure Height:
5.500 in. (6.8 inch with flange)
Enclosure Width:
3.800 in.
Enclosure Depth:
2.300 in.
Lowest Band of Operation:
200 meters
Highest Band of Operation:
10
meters
Antenna Mounting Type:
Antenna wires
Details:
This balun/unun combination was personally designed by the late Dr. Jerry Sevick for our company. Custom K type core is used to obtain the widest bandwidth. UL rated 200 deg C thermoleze coated wires used. The wires are sleeved through teflon tubing for high voltage breakdown.
Highest voltage breakdown ratings.
Typically insertion loss is less than 0.2 dB with an efficiency of 97 percent.
BALUN is "
Current" type
Powder coated
Aluminum case with SO 239 connector and 2 ceramic feed through post as outputs.
Application:
Off center fed antenna with 300-ohm unbalanced load to a 50-ohm unbalanced line.
Folded Dipole Antennas using 300 ohms ribbon at 0.22 wavelength above ground.
QUESTIONS ARE TYPICALLY ANSWERED BETWEEN THE HOURS OF 9AM -5PM PST MON - FRI. QUESTIONS AFTER THOSE HOURS WILL BE RESPONDED TO AT OUR EARLIEST CONVENIENCE.