Received the WT-3A wireless transmitter over the weekend. I'm still unable to get it running in infrastructure mode, but I suspect that's based on an FTP server and/or router configuration issue. I was able to get it working Ad-Hoc. Transmission distances using the built-in antenna are roughly 50 feet. I used Nikon Camera Control Pro to download the images directly to the laptop hard drive.
Will post an update as soon as I get infrastructure mode working. Also plan to test with ITP.
I was able to get it working as an infrastructure device this evening. As a note; I use a home-based wireless router; I was entering the FTP server NAME and getting nothing but FTP Errors on the transmitter. When I entered the FTP server IP ADDRESS it started working with no problems! This, of course, assumes that all of the other various FTP and security-related settings are correct.
Mine was purchased from Penn Camera (www.penncamera.com) in the Washington, DC area - a local chain with an outstanding reputation. I understand they are "trickling in", so there will liklely be a waiting period for new orders.
I haven't thoroughly tested the battery life yet, but I can tell you that the transmitter has a significant effect on battery life. While trying to get the FTP setting working I went through two batteries. When I did get it working I was able to shoot and transfer about 60 NEF+JPGs; checked the battery meter and it was down to 40%. There is an AC adapter socket on the grip (which kinda' defeats the whole concept of "wireless", but who am I to judge!). Recommend those who consider the WT-3A stock up on those elusive batteries!
The working distance in infrastructure is considerably longer, but based on a number of conditions - the first being the location of the wireless access point. I believe Nikon claims working distances of up to 300 feet in infrastructure mode (900 with the extended antenna). If you require a longer range (i.e., football/soccer fields or large arenas) try using multiple access points or repeaters.
Yes, the camera connects and disconnects each time. That's by design. The wireless component causes a considerable power drain, and it's not necessary to maintain a *constant* connection to the host. In the end, it saves a good bit of battery power.
There is another thread in this forum which addresses the Airport Extreme. Apparently you have to create a new network on your laptop, then set the camera to those settings. I'm not a mac pro, so I haven't tried that configuration yet.
Galupi, I just saw your e-mail from last Saturday - so I responded with a bit more detailed information. Please let me know if that information helps - otherwise we'll need to look more closely at the configuration details.