The CU-25-1000VLFN is a 25:1 quad core, Unun housed in a NEMA enclosure box (4″ x 4″ x 2″) with top coax connector output of 1250 ohms used to translate a 50 Ω unbalanced coax input to 1250 Ω unbalanced output at RF power levels up to 1000 watts PEP. With a matched 600 ohm load the SWR over the frequency range 100 KHz to 4 MHz is less than 2:1 (return loss <-10 dB) on the coax input.
Input and output connectors are type "N".
Also includes ground lug/wingnut connected to input and output shield connectors.
Note: Picture shows unun with 9:1 ratio which is shown for illustration of the form factor. Actual 25:1 unun will have the proper label and frequency range and no ground connector..