Name: 50:450 ohm (9:1) CUBE™ Unun, 1.8-31 MHz, 5 KW PEP, End Fed Antenna
Brand: Palomar Engineers
SKU: CU-9-5000
Price: 149.95 USD
Availability: InStock

2908446667 - Power Splitters & Combiners

50:450 ohm (9:1) CUBE™ Unun, 1.8-31 MHz, 5 KW PEP, End Fed Antenna

Store/Antenna Products/CUBE Impedance Transformers (<1:1, 1:1, >1:1)/50:450 ohm (9:1) Transformers

Product Details

Input ohms/Output ohms: 50 in / 450 out

Frequency Range < 2:1 SWR (MHz): 1-31 MHz

PEP Power Rating (watts): 7500

Model CU-9-5000 is a 9:1 multi-core unun housed in a NEMA enclosure box (4″ x 4″ x 2″) with top stud/eyebolt output used to translate a 50 ohm input up to 450 ohms at RF power levels up to 5000 watts PEP (SSB) when used with a matched load. Usable to 61 MHz under 2:1 SWR with matched load.

Great for end fed antennas - FT-8 and digital mode power ratings are approximately 30% of PEP ratings into a matched 450 ohm load. For non-resonant end fed antennas, you will need a feed line choke on the coax. See typical antenna configuration notes below for details.

Non-Resonant End Fed Antenna Configuration Notes

Combiners and splitters (CS) are very useful devices in receive and transmit applications where signals need to be combined (from several antennas for example)or signals need to be split (into two amplifiers for example). They can provide equal voltages, equal current, or equal power to matched or unmatched loads. How it works depends on the product selected.