EAGLElement, a T&E organization founded by an experienced JTAC, has released what they call a "Quick Look" review of the JTAC HG3D, a pack designed by High Ground specifically for combat communicators and others with a similar mission set. It was built to be worn over body armor.
HG3D JTAC 3-Day Pack: http://www.highgroundgear.com/products/hg3d-jtac-3-day-pack
Currently available in MARPAT Coyote Brown and MultiCam
• Ultra-Light Carbon Steel Frame – Contoured for Body Armor • Cable Routing Shoulder straps – hide cables & hoses • Adjustable Radio Straps – carry 117G • Total access antenna ports • Patent-Pending Quick-Release Waist Belt • Detachable Assault Strap – carry extra 40 mm or E&E crap • Reversible rain cover – VF-17 Panel • Compression Panel – Carry Jacket or Helmet with NODS