Testing the Radiopopper Nano Flash Triggers

A few weeks ago, I took advantage of the sale on the RadioPopper site and ordered a couple of the new Nano Triggers and a Nano Transmitter. I've been using the RadioPopper JrX transmitters and receivers since they came out in 2009 and they've been excellent. For a basic flash trigger that works reliably indoors and at distance, the JrX triggers can't be beat for the price. The Nanos seem to improve upon the already excellent JrX line for even less money and promise to be compatible with the triggers I already have. Yesterday, I took both products to Fair Park in Dallas to test how well they work at distance.


To recap, let's take a look at the JrX transmitter and receiver:

RadioPopper JrX Transmitter and Receiver

 The JrX system has DIP switches that let you choose between 16 channels and 4 groups, as well as some settings for the three dials and error correcting. The dials allow you to set the level of the flashes/strobes for 3 of the groups when used with the Studio model receiver (now the only receiver available) or the 'Cube' - for use with Canon/Nikon speedlites. The system has a lot of functionality for those using Alien Bees or Canon/Nikon flashes.
The transmitter also has a metal base that slides on to the camera's hotshoe - a nice touch of quality. However, the base is held on by two tiny screws - on one of my transmitters, one of the screws has come off, so the base wobbles a little when on the hotshoe. I've also found that the transmitter doesn't have a very tight grip on the hotshoe and I've had instances of it not firing and needing to be moved slightly when on the camera hotshoe.

One of the screws missing from a JrX transmitter

 The Receiver triggers the flash through an 1/8 inch port on the side of the device, which means you'll need to provide a cable to trigger the flash. Alien Bees can be triggered and controlled via an RJ-11 (telephone) port on the side. The Studio models come with this short cord, but a regular telephone cable is all that's needed. I've made up some custom 1/8" to 1/4" cables for my studio flashes for use with these triggers, but these cables and adapters come with the receivers as well.



Now looking at the new Nano line, some obvious differences can be seen just from the photos.

RadioPopper Nano Transmitter (top) and Receiver

Both the receivers and the transmitters are a completely different housing than the JrX line. The transmitter doesn't have the metal base of the JrX, but it does have a thumbscrew to tighten it down on the hotshoe - a big improvement already! The receiver has both an 1/8" port AND a hotshoe, meaning that a speedlite can be placed on the receiver itself or a studio flash can be triggered from the 1/8" port. Better yet - BOTH the speedlite and the studio strobe can be triggered from a single receiver! With a hotshoe to 1/8" adapter, this means that two speedlites coud be triggered from a single receiver as well. For those using more than one speedlite, especially if they're in close proximity, this could be a big money-saving feature.
The buttons on the Nanos are touch sensitive, so there are no moving parts. I question how well these will work if you have cold hands, and I'm pretty sure they won't work at all if you have gloves on. The receiver can also be screwed directly on to a light stand, making a solid support for flashes placed in the hotshoe.

The Nanos have much simpler electronics. They offer four channels and that's it. No groups or error correcting DIP switch like the JrX line, and no way to control the output level of the flashes. The four channels do correspond to the first four channels of the JrX (and other RadioPopper lines), so they are interchangeable once you stay on the first four channels for all devices.

TESTING

For my test, I set up a Nikon SB-26 speedlite on the Nano receiver hotshoe and a Canon 580 EXII speedlite on a hotshoe to 1/8" adapter plugged in to the JrX receiver. I took a photo with each transmitter, increased the distance, and repeated.
Set up photos and test shots are below:

Nikon SB-26 on RadioPopper Nano receiver

Canon 580 EXII on hotshoe connected to RadioPopper JrX receiver

RadioPopper Nano transmitter on Canon 5D mk II

RadioPopper JrX transmitter on Canon 5D mk II

Both flashes set up side by side

Testing

Still works

Still working

Getting harder to spot the flashes now, but still working

At this point, only the JrX transmitter worked.

The view from the flashes

A panoramic view of the test area - because I seem to always have to take at least one panorama shot wherever I go

Initially, I was surprised that the antenna for the Nano receiver pointed backwards, away from the front of the flash. The JrX receiver needed to be secured to the light stand, so the antenna can be pointed any way you choose. I put the JrX receiver vertically on the front side of the flash. I wondered if the antenna orientation would effect the distance of the reception, but from this initial test, it didn't affect it at all.
I did find one dead spot - at the first tree in the center of the photo above - where the Nano transmitter would not work, but the JrX transmitter did. I thought I had hit the limit of the transmitter's range, but when I backed up another 20 feet or so, the Nano transmitter started working again. Maybe a wavelength anomaly? Not sure. I did hit a point where the Nano transmitter stopped working, but the JrX transmitter worked. Backing up a few more feet had the same result - only the JrX transmitter worked. I wasn't able to get to the end of the JrX transmitter's range as I would have been outside the park at that point, but it seems the JrX transmitter is the stronger of the two. Both still worked at a great distance, though, as you may be able to see in the photos above.
Some people might question the usefulness of being able to trigger a flash at a distance far greater than you would need for a photo. However, this test shows the power of the trigger signal. It's that power that ensures that the signal will be able to work through obstructions, walls for instance, that you are likely to encounter in real world situations.
When you take into account the fact that these triggers can also be used to trigger cameras, then their range opens up new possibilities of camera placement.

I'm looking forward to using the Nanos in upcoming shoots. For use with speedlites, I think the Nano is a much neater approach as it can be placed directly on a light stand and the flash placed directly in the hotshoe. No need for a cord or a place to secure the receiver. With the JrX receivers, I use small bungies to attach them to the light stand. Being able to tighten the Nano transmitter to the hotshoe should guarantee a good connection, as well as allow the transmitter to withstand being bumped while moving the camera.

That's it for my initial test with the Nano triggers - stay tuned as I'll be updating after I've used these in some actual photo shoots!