These are ~49:1 ratio (~2500:50 Ohms)/~70:1 (~3500:50 Ohms) UNUN transformers for EFHW (End-Fed Half-Wave) antennas, simply choose a model and add a half-wave length wire for your chosen frequency of interest.
Note that it will also work on its harmonics for example 3.5 MHz x 2,3,4. etc.
Due to continued unprecedented demand in April and May, going forward we are extending our handling and assembly period for each order to 5-7 business days to accomadate volume. We thank you for your patience and understanding! 73 Dismiss