Hi,

maybe a bit late, but here is how it works :

Your 3PRKA TX is FHSS
The RX that comes with it is the RG203F, that is S-FHSS (faster than FHSS, but works also in FHSS mode)

Your right and wrong about the 4PL as it's not FHSS like you said, it's S-FHSS, but works also in FHSS.
The R2014GF is a S-FHSS Rx, can also work in FHSS. It's the same than the R203GF but with one more channel

So both Rx can work with both Tx, the only thing is that the R2104GF will do like the R203GF with the 3PRKA, it will use the FHSS mode.


Two important things :
- you can also use this smaller Rx : R2016GF (S-FHSS, but shorter distance, 300ft/100m max)
- With the 3PRKA, the Rx use FHSS automatically, but with 4PL, it will connect in S-FHSS, but you then has to set the servo type (digital or normal).