[TowerTalk] AB-577/GRC Info

[N7KA at comcast.net]

OD = 2.350 
 (Nominally it measred 2.344).  I no longer have access to paint thickness measuring equipment.  See the info below on ADAPTER, ANTENNA. (it might be in bold font)
ID = 1.930

Tubing length is 7 inches long

Just happen to have one here to measure with calipers.

Here is some internet  info on the AB-577/GRC:

Parts List for AB-577/GRC
Mast base (launcher) 1 
Carrier assembly (for mast sections) 1 
Mast section (5 inch diameter) 8 
Bag, roll type (for anchor components and tools) 1 
Anchor, guy (screw type) 3 
Stake, guy GP-112 (rock and ice stake) 3 
Stake, GP-2 4 
Bag, BG-102 (for guys and accessories) 1 
Guy assembly, blue (36 or 39 feet) 3 
Guy assembly, white (44 or 47 feet) 3 
Guy assembly, red (62 or 65 feet) 3 
Guy attaching ring, top 1 
Guy attaching ring, middle 1 
Adapter, antenna (top section 2.35" dia. x 7" L) 1 
Clamp, rim clenching (joins sections) 8 
Halyard (radius rope) 1 
Winch assembly 1 
Wrench, spanner (for rotating mast) 1 
Technical manual 1 
Hammer, 6lb and Digging Bar only included with reconditioned towers 

Arne N7KA