LIST OF MATERIAL |
|||
ITEM NO. |
PART |
SPECIFICATION |
NOTE |
1 |
BOND STRAP, TYPE II |
MIL-DTL-24749 |
1 |
NOTES:
MOUNTING SURFACE
6 PLACES (SEE NOTE 1)
MOUNTING SURFACE
4 PLACES (SEE NOTE 1)
1 AN/URA-38
GROUNDING BOLT
1
1
1. HF ANTENNA TUNER/COUPLERS SHALL BE GROUNDED AS REQUIRED FOR TUNING AND OPERATION. THE MOUNTING SURFACES BETWEEN THE TUNER/COUPLER AND GROUND POTENTIAL SHALL BE CLEAN AND FREE OF CORROSION. A HEAVY COAT OF ANTISEIZE COMPOUND,
A-A-59313, SHALL BE APPLIED TO THE CLEANED AREAS AND
EXCESS ANTISIEZE SHALL BE REMOVED AFTER BOLTING. ALL AREAS WHERE ANTISEIZE IS APPLIED SHALL BE EDGE-SEALED USING MIL-S-45180 TYPE II SEALING COMPOUND. IN ADDITION TO THE ABOVE CLASS B BOND, ONE TYPE II BOND STRAP
SHALL BE INSTALLED ON THE MOUNTING FOOT CLOSEST TO ANTENNA
FEED WIRE. BOND STRAP CONNECTION TO GROUND POTENTIAL SHALL BE BY STUD, STUD PAD, OR BOLT. THE CONTACT SURFACE BETWEEN BOND STRAP AND GROUND POTENTIAL SHALL BE AT LEAST EQUAL TO THE WIDTH OF THE BOND STRAP. CONTACT SURFACE AREAS FOR BOND STRAPS SHALL BE CLEANED TO BRIGHT METAL AND COATED WITH ANTISEIZE COMPOUND PRIOR TO BOND STRAP INSTALLATION. ALL HARDWARE AND BOND STRAPS SHALL BE WEATHERPROOFED AFTER INSTALLATION USING MIL-S-45180 TYPE II GASKET COMPOUND.
2. THESE ILLUSTRATIONS SHOW GROUNDING METHODS FOR SPECIFIC HF TUNER/COUPLERS. OTHER TUNERS AND COUPLERS THAT REQUIRE GROUNDING IN ACCORDANCE WITH INSTALLATION CONTROL DRAWINGS SHALL BE GROUNDED USING SIMILAR METHODS.
CU/937-UR
FIGURE 10. Antenna tuner and coupler grounding.
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