can i use an ft37-43 in a hybrid combiner for 1.8-30mhz?

[ssbothwell KJ6RSG]

i desire a hybrid combiner for splitting a signal so i can send one path to a device under test and the other path to my scope so i can make before and after DUT comparisons.

i found a hybrid combiner design in the ARRL handbook but it uses a ft23-77 core. i dont have any of these but i have a bunch of 37-43 cores.

will the 37-43 core work fine if i make appropriate adjustments in the number of turns based on the difference in AL or are there other differences in the cores that will be a problem?

[KF1Z]

You may end up with varied results above (edit) 20 mhz using type 43.

Not sure though.

Try it anyway, not like it's going far out of the way to try and see what happens  :-)

[WA1GFZ]

Yes, Type 61 will also work.
For type 43 about 8 turns of twisted pair.