Now, let's talk about those splitters. I'm assuming cable TV splitters here? As tempting as they may be they are a bad choice for HF and here are a few reasons why.
1) Low quality splitters lack circuitry and isolation in them. Have a look here: Coaxial Cable Splitters
https://www.flukenetworks.com/knowledge-base/cableiq/coaxial-cable-splitters-cableiqWhat's in your splitter?
2) Cable TV systems are designed with a frequency split:
a) Forward - 52 to 1000 MHz (or higher). This is what the customer receives; and
b) Return - 5 to 42 MHz. This is what the customer transmits back to the head-end.
Chances are that at best you can find a bi-directional 5 to 2400 MHz splitter. So where does that leave the 0 to 5 MHz portion of the HF band?
3) Except for a 2 way splitter, only 1 port will be of lower loss (approx 4 dB and all others will be approx 8 dB). That's just the way it works in a passive design.
4) Do you terminate the unused ports with 75 Ohm resistors? You should.
... food for thought.