Originally posted by WheresWaldo OK understood, but the mod is for the CTR-301 not the CTR-301P. I just tested my 301P again and it works fine at 1/180".
Don't know how you will be able to use the RF-602 if it won't sync to 1/180" I only bought one pair and bought it to use specifically as a wireless 2.4Ghz remote so I am not tied by the wired remote or the line of sight or distance restrictions of the IR remote.
The mod goes back to the original Cactus triggers. It just gets "reinvented" for every version with an issue with sync by different people.
The RF-602 set works at 1/125 and below, so it's not unusable, just not optimal. If I need the range it's there. if I need the remote shutter, it's there. If I need 1/180, I have a set of PT-04 TM Is and PT-04 TM IIs that work very well for me.
I bought the RF-602 to try to resolve use with a pair of Pentax AF 360FGZ flashes that power off after 3 minutes. The RF-602 can't wake the flashes or keep them from powering down. This is the larger failure of the RF-602s as far as I'm concerned.
Would I recommend the RF-602 for a Pentax camera like you did, no.
Thank you
Russell