Attachment_2_-_Antenna_Junction_Boxes.pdf

New 5/8" OR 7/8" Heliax Cables To J-Box On Tower Platforms or to Antennas on Poles. Use ½” heliax For Pigtail Cable Between Antennas And J-Box on Tower Platforms.

Surge Suppressors (Polyphasers, IS- NEMP-C1 or IS-50NX-C1 or Equal)

Isolated Copper Plate. Drill Proper Size Holes And Mount Surge Suppressors. NOTE: Place Stainless Steel Washer/spacer Between Aluminum Shell Of Surge Suppressors & Copper Buss. This Is To Prevent Possbile Corrosion Between Dissimilar Materials.

Stainless Steel Junction Box (J-Box) With Door (Weather Tight). Suggested min size of 36'X32"X8".

Cut Opening(s), As Required, In Existing Bulkhead Plate So New Cables Can Be Run To Radios. After The New Cables Have Been Pulled, Tested, etc., And The Old Cables Have Been Removed, All Openings Are To Be Sealed Weather Tight Prior To Installation Of Hood.

Cables Between J-Box And Bulkhead Plate Need To Be Contained In Weather Tight Enclosure.

Existing Bulkhead Connectors Or Openings In The Bulkhead Plate

½” heliax or Other RF Cable To Radios

Cut Appropriate Size Openings And Seal Weather Tight Rubber Gromets (or Equal) Around Openings.

Openings Could Be On Sides, Top/Bottom Depending On The Site.

STANDARD 38 EIG SKETCH

Typical-Configuration, Mounting, and Grounding Of

Building Junction Box (J-Box)

38 EIG STD SKT-JBOX-001

Sheet 1/2 27 Aug 2003/jep; Rev A, 7 Jul 04; Rev B, 17 Jun 15;

Take To Site Systems Ground Via Separate Path And Bond By Exothermic Weld

Existing Or New Bulkhead Plate (As Required)

File: J-Box Gnd

Ground Lead Off The Copper Buss Is To Be Isolated To Prevent Contact With The J-Box.

For openings cut in the top, an appropriate length of Schedule 40 PVC (typically 4" diameter) will be installed between the hole and the entry into the building to include any necessary elbows. The ends of the PVC will be weather sealed to prevent water entry into the junction box of building.

STANDARD 38 EIG SKETCH

Typical-Configuration, Mounting, and Grounding Of

Building Junction Box (J-Box)

38 EIG STD SKT-JBOX-001

Sheet 2/2 27 Aug 2003/jep; Rev A, 7 Jul 04; Rev B, 17 Jun 15;

Example final layout of typical junction box. This is for illustrative purposes only, and specific site installs may differ as noted on page one of this sketch.