RadioPopper RPCube for Canon Flash - Shoe and Sync Port, Compatible with JrX and PX Receivers

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About RadioPopper RPCube for Canon Flash

The RadioPopper RPCube (Canon) is a component that makes your JrX Studio receiver that much greater! In addition to give flash power control, it also provides you with a standard sync port. No need to scour the internet for a expensive, hard-to-find adapter to give your old flash a sync port. Installation is easy. Simply slide your flash onto the hotshoe of the RPCube and lock it into place. Then, using a 3.5mm cable (provided with JrX receiver) plug one end into the RPCube and the other into the appropriate port on your JrX studio receiver. Make sure your flash is then set to TTL.

The RPCube enables the EZset Strobe functionality of the JrX Studio Receiver giving you remote power output control of almost any hand held dedicated TTL flash that is Canon Compatible. Using the dials on the JrX Transmitter and/or the digital groups on the PX Transmitter you can adjust your lights up and down right from your camera.

The RadioPopper RPCube for Canon Flash is commonly used for Weddings and more.

Summary of Customer Reviews

Customers most agreed on the following attributes:
Easy to use (3),Lightweight (3)
Poor quality (3)
Best Uses:
Weddings (4),Family photos (3)
Reviewer Profile:
Pro photographer (3)

RadioPopper RPCube for Canon Flash Features

  • Remote Power Control for Off-Camera Flashes
  • Works with the RadioPopper JrX System

RadioPopper RPCube for Canon Flash Specifications

3.5mm mono or stereo male plug
1.86" x 1.14" x 1.10" (47.3mm x 29.0mm x 28.0mm)
0.9 ounces / 25 grams
Mfr #

RadioPopper RPCube for Canon Flash Reviews

Reviewed by 4 customers


JR2s are now available


from New York, NY  -  Pro Photographer

The biggest of the flaws with the JRX's was the cube/cable/receiver assembly and finickiness of the connections of the three. the JR2's supposedly solve that, combining all three, but he transmitter for the JRX is still the best in the business, imo. Being able to change power without even looking up from the viewfinder is incredibly fast and convenient, and the only reason I haven't moved to other wireless radio systems like the Canon 600's.


Fantastic system, but not flawless..


from New York, NY  -  Pro Photographer

I LOVE LOVE LOVE the JrX system. the dial's are the best in the market when it comes to triggers, as you can remotely change your flash power from 3 different groups quickly and without even looking. The only thing I would have loved is if there were a place to add a flash on top of the transmitter so you could bounce back in addition to the 3 groupings (for a total of 4). The connectivity can also be problematic, as it sometimes freaks out inexplicably and pops at full power each time. either that, or no response at all. the only solutions are to disconnect and reconnect everything (and this solution is not a 100% fix), or mess around with the dials a bit. Unfortunately, this does happen pretty frequently. Supposedly other radio interference plays a part. So yes, it's a bit buggy, but the idea behind it is genius, and I'd love if the JR2's also allowed for flash on top, but do not, and though it does seem sturdier, I would miss the dials for sure.


Works as expected


from Cookeville, TN  -  Semi-pro Photographer

I use the RadioPopper RPCube with a set of Canon 580EX flashes. It works as advertised. Not much else to say. :-)


does the job


from Las Vegas, NV  -  Pro Photographer

I wish I had gone with a different brand of remote trigger from the get go, but the cube itself does it's job. This is my 2nd one because my first broke when my lightstand caught some wind.


Questions & Answers Powered by TurnTo®

Questions about this item:

Shopper  Why Did You Choose This?
TIM R  I wanted to be able to control flash output at the transmitter.
Shopper  can it actually control the power of the 580 in Manual mode? Not sure what the mean controlling the power remotely ??? Can adjust the power with the controls on the txmiter with relation to the ttl exposure or you can control the manual power? like 1/8 1/16 etc. Are the controls in the transmitter in clicks or analog?
STEEV D  You use the RadioPopper JRX transmitter which has knob pots to control the power output of the flash. Its a fluid control pot, so I guess you'd call it analog, not clicks, and not specific like 1/8, 1/16. You have to tweak it manually with a knob till you find the flash output you want.
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