Jim Ruff Antennas & Feeds CDR2/17/05

1

EVLA Feed ConeCurrent Status

Feed Circle LayoutStructural DesignFeed MountingFeed Heaters

Cost

Jim Ruff Antennas & Feeds CDR2/17/05

2

Current Status

• Four built to date.– One mock-up.– Three installed. (Antennas 13, 14 & 16)

• Extrusions and Base Plates ordered for all.

• Panels Ordered for all.

Jim Ruff Antennas & Feeds CDR2/17/05

3

Antenna 13 Feed Cone

Jim Ruff Antennas & Feeds CDR2/17/05

4

Feed Circle

Jim Ruff Antennas & Feeds CDR2/17/05

5

Feed Circle ‘Rolled Out’

Jim Ruff Antennas & Feeds CDR2/17/05

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Feed Cone Structure

Jim Ruff Antennas & Feeds CDR2/17/05

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Feed Cone Being Installed in A13

Jim Ruff Antennas & Feeds CDR2/17/05

8

K-Band Feed Mount C, X, and Ku Similar

Jim Ruff Antennas & Feeds CDR2/17/05

9

Ka-Band Feed MountQ-Band Similar

Jim Ruff Antennas & Feeds CDR2/17/05

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A14 Feed Cone and A13 Feed Mounts

Jim Ruff Antennas & Feeds CDR2/17/05

11

Feed Heaters

Jim Ruff Antennas & Feeds CDR2/17/05

12

Feed Cone Cost

Actual Production Feed Cone Costs. (Not included: Feed mounts, Feed Cone Floor, Skirt, ‘Combo Strips’, Feed Heaters, etc.)

$5550 Laminated Panels $275 Extrusions$1050 Base Plates$1125 Consumables$8000 Total

Assembly & Installation labor ~ 4 man-months