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
Off Center Fed Dipole Antenna, 40-6 Meters, 500/1.5KW/5KW PEP rated - FREE shipping in USAProduct DetailsBrand: Palomar EngineersFreq Range (MHz):: 7-54 MhzPower (PEP watts):: 500/1500/5000 watts digitalLength (ft):: 55 + 12 FEETThe PAL-OCF4010 covers 40-30-20-17-15-12-10 and 6 meters in a length of 66 feet. In most cases, no antenna tuner is needed and switching bands is as easy as changing the band on the radio. Super convenient and quick – great for contest operation! Choose 500, 1500 or 5000 watts PEP power levels.
Uses hybrid balun containing wide band 4:1 transformer + 1:1 common mode feed line choke to keep all your power on the antenna and off the feed line coax outer conductor!
Unlike Buckmaster OCF antennas (at twice the price, and no WARC band or 15 Meter operation), you can transmit and receive on 6, 12, 15 and 17 meters with our OCF - Better engineering and lower price - only from Palomar Engineers!
Also much quieter than end fed antennas!
INSTALLATION
For best results support balun at 30+ feet and ends over 15 feet. Angle of feed each side must be great than 45 degrees or 120 – 180 degrees total between each side preferred. Any length of 50 ohm feed line ok but longer feed lines over 50 feet may show reduced SWR on some bands due to losses in feed line and soil conductivity, nearby objects, etc. Due to local ground conditions, antenna height and feed line length, SWR may vary from samples shown and an internal or external antenna tuner may be required or some bands to bring SWR at end of feed line to acceptable levels. Overall length is 66 feet (11 feet and 55 feet sides).
FREE USA Shipping on orders over $100
NEED and END FED antenna covering the same bands and only requiring two supports rather than three? Check out the BULLET-4006
Off Center Fed Dipole Antenna, 40-6 Meters, 500/1.5KW/5KW PEP rated - FREE shipping in USA
Product Details
Brand: Palomar Engineers
Freq Range (MHz):: 7-54 Mhz
Power (PEP watts):: 500/1500/5000 watts digital
Length (ft):: 55 + 12 FEET
The PAL-OCF4010 covers 40-30-20-17-15-12-10 and 6 meters in a length of 66 feet. In most cases, no antenna tuner is needed and switching bands is as easy as changing the band on the radio. Super convenient and quick – great for contest operation! Choose 500, 1500 or 5000 watts PEP power levels.
Uses hybrid balun containing wide band 4:1 transformer + 1:1 common mode feed line choke to keep all your power on the antenna and off the feed line coax outer conductor!
Unlike Buckmaster OCF antennas (at twice the price, and no WARC band or 15 Meter operation), you can transmit and receive on 6, 12, 15 and 17 meters with our OCF - Better engineering and lower price - only from Palomar Engineers!
Also much quieter than end fed antennas!
INSTALLATION
For best results support balun at 30+ feet and ends over 15 feet. Angle of feed each side must be great than 45 degrees or 120 – 180 degrees total between each side preferred. Any length of 50 ohm feed line ok but longer feed lines over 50 feet may show reduced SWR on some bands due to losses in feed line and soil conductivity, nearby objects, etc. Due to local ground conditions, antenna height and feed line length, SWR may vary from samples shown and an internal or external antenna tuner may be required or some bands to bring SWR at end of feed line to acceptable levels. Overall length is 66 feet (11 feet and 55 feet sides).
FREE USA Shipping on orders over $100
NEED and END FED antenna covering the same bands and only requiring two supports rather than three? Check out the BULLET-4006
