Originally posted by 6BQ5 I have an older flash with a PC cable that I would like to mount remote from my K-30.
Cables make sense when connecting a P-TTL flash to retain its P-TTL features.
For a simple, old flash, I'd rather use some simple radio triggers. Some of these can be cheaper than a cable.
Many radio triggers can withstand high trigger voltages (e.g., up to 300V for Cactus triggers) and you will be a lot more
flexible regarding how to use your flash.
BTW, with a bit of luck your flash is listed in this
collection of flashes and their trigger voltages. Pentax once said 30V should still be OK for their cameras, but it was never an official statement.
What flash do you have? If it is TTL-capable, you may even be able to remote control its power level with the upcoming
Cactus V6 trigger.