This is a follow-up on a previous post about a radio transmitter/receiver set that will work with the D500 and SB-700. I sold the Altura set because it won't work with my D500 to fire the SB-700 off-camera. If any members own or have owned a D500 and SB-700 and have found a radio /transmitter set that will fire the SB-700 off-camera please reply with the product name. Thanks.