Shakespeare 120 HF Antenna

AT-1011/U

NSN
Hints & Tips
Mounting
    4257 Sugar Scoop
    Tilt Whip Adapter
    Military Antenna Tripod
Links


8 Ant. Elements	4245 Base w/ Plunger Up allowing spring to flex	MX-9313 NVIS Base on 4245 Spring Base	Tilt Whip Adapter for NVIS use of either the 16' or 32' whips
base SC-C160410 Witche's hat	Military Antenna Tripod

Description

This is a military antenna system where the radiating elements are each 4 feet long and can be combined to make a 16 or 32 foot long antenna.
Each antenna element has a female thread at the bottom and a male thread at the top. Harris may sell this antenna as their SB-V35F.

The base antenna element uses 1-8 threads formed into the sheet metal.

NSN

Description	Nomen	Model	NSN
Tip element	AT-1039/U	120-20	5985-00-733-6042
Second element	AT-1040/U	120-2	5985-00-733-6043
Third element	AT-1041/U	120-34	5985-00-733-6044
Forth element	AT-1042/U	120-8	5985-00-733-6045
Extension element	AT-1043/U	120-14	5985-00-733-6046
Flange Basse	SC-C160410	120-28	5985-00-733-6047
Bag	8 elements	120-58	5985-01-475-2367
Guy Rope Kit	1 level	120-59	na
Ground Radial Kit	na	120-47	5985-01-397-6971
Ground Stake Kit	na	120-48	na
Spring Base	AB-1335/G	4245	5985-00-267-2752
Adapter	NVIS Tilt Whip	4282	5985-01-422-8525
Bracket	Shelter Mounting	4240-30	5985-01-514-4515
Sugar Scoop Bracket	SCD-189023	4257	5985-01-514-4396
Transportable Ant Kit	32'	120-60	5985-01-453-4775
Stationary Ant Kit 32'	AT-1011(U)	120-55	5985-00-846-6442
Eye Protector	na	4291-1	na
HV Protection Kit	na	120-HVPDR	na

Hints & Tips

Installation of 32' Antenna

Start with the 4245 spring base firmly attached to a vehicle or structure.

Screw on one of the bottom antenna elements
Pull out pin from 4245 spring base and pull up on antenna section. Then turn and push in pin lock in place. The spring will now be able to flex.
Install the lowest antenna section to be used.
While pulling bottom antenna section over walk away while attaching each section one at a time by screwing each section on the prior section.
After all sections are screwed together in a horizontal position, walk the antenna up. The spring will assist in pulling the antenna up. When vertical, lift up on bottom antenna element while pulling and turning the lock pin out, then lower the antenna.
Lock the pin by turning it and allowing it to go in.

Take Down

Reverse the above steps. This means unlock the base so the spring is flexible and bend the antenna over and start taking it apart at the tip end, working back to the base.

Mounting

SCD-189023 Sugar Scoop aka Shakespeare 4257

The plan is to mount the bracket on a pipe or fence post in the ground, install an elevated radial system and use this antenna with the SGC antenna coupler.

Standard 2" muffler "U" bolts have the correct center to center distance, but the sugar scoop holes needs to be slightly enlarged. A 5/16 Drill is a good choice. Since the 4245 Antenna base does not protrude down into the sugar scoop 3 "U" bolts can be used and the supporting pipe can be on the inside of the bracket. The 4 holes in the top of the sugar scoop are 7/16" diameter and are the standard military antenna base hole pattern.

I was going to do this with the Light Weight Beacon antenna, but it did not survive winter winds.

Tilt Whip Adapter

The bottom tube has no internal threads, it just slips over the base. This way the antenna can be rotated freely then the clamp locks the rotation. Typically for radio operation the antenna would point to the back, but for driving on the street the antenna would point to the front and be tied down. Weight 6 pounds. Extremely strong construction.

Military Antenna Tripod

Marking:
67032 ASSY
03-2735119-1
MFR 53892

When the legs are retracted the overall length is about 33".
When the legs are folded out and with the lock pins are holding them in both directions the height from the top to ground is about 24" and the holes in the shoe plates are about 46" center to center. The top plate is 6" diameter and has three holes on a 4.5" diameter bolt circle with 90 degrees between them. The center hole is a little less than 3.5" I.D. The shoe plates are 4 x 4.15" with a through hole a few thousandths smaller than 1/2"