ADMINISTRATIVE MESSAGE
ROUTINE
R 221527Z DEC 97 ZYB PSN 625343L23
FM PEO SC WASHINGTON DC//PMS400F//
TO COMNAVSURFLANT NORFOLK VA//N6/N8/N43/N431A5//
COMNAVSURFPAC SAN DIEGO CA//N8/N43/N43111//
AIG ONE ONE TWO TWO FIVE
INFO COMNAVAIRSYSCOM PATUXENT RIVER MD//JJJ//
AEGIS TRAREDCEN DAHLGREN VA//00/N31/N32/N33/N42//
AEGIS TRAREDCEN DET NORFOLK VA//00//
AEGIS TRAREDCEN DET MAYPORT FL//00//
AEGIS TRAREDCEN DET SAN DIEGO CA//00//
AEGIS TRAREDCEN DET PHILADELPHIA PA//00//
AEGIS TRAREDCEN DET PEARL HARBOR HI//00//
AEGIS TRAREDCEN DET YOKOSUKA JA//00//
AEGIS TRAREDCEN DET WALLOPS ISLAND VA//00//
FCDIT LITTLE CREEK VA//JJJ//
UNCLAS //N08272//ACTION ADDEES OF AIG 11225 TAKE FOR INFO ONLY//
MSGID/GENADMIN/PEO SC//
SUBJ/CG 47 CLASS ADVISORY NR. 04-97 AMENDMENT 1, HERP-HERO GUIDANCE//
REF/A/RMG/PEO SC-AP/171752ZJUN97//
AMPN/REF A IS CG 47 CLASS ADVISORY NR. 04-97//
RMKS/1. THIS CLASS ADVISORY AMENDMENT MODIFIES THE GUIDANCE
CONTAINED IN REF A REGARDING HERP PRECAUTIONS IN PORT FOR
AN/SPY-1A/B/B(V) HIGH POWER RADIATION. THIS AMENDMENT REQUIRES THAT
THE QUADRATURE ALIGNMENT OF THE TRANSMITTER BE WITHIN PMS LIMITS WHEN
RADIATING HIGH POWER IN REMOTE CONTROL. THIS IS NECESSARY TO ENSURE
THERE IS NO RF RADIATION EXCEEDING PERMISSIBLE EXPOSURE LIMIT (PEL)
ON THE DECK. THIS MODIFICATION IS A RESULT OF RECENT TESTS CONDUCTED
ABOARD USS SAN JACINTO.
2. THE FOLLOWING PARA SHOULD BE INSERTED IN PARA 3.A.(1) FOLLOWING
SUBPARA (3)(B): "WHEN RADIATING HIGH POWER IN REMOTE CONTROL,
QUADRATURE ALIGNMENT OF THE TRANSMITTER MUST BE WITHIN PMS LIMITS
TO ENSURE THERE IS NO RF RADIATION EXCEEDING PEL LEVELS ON THE DECK.
IF COMPONENTS IN THE RF PATH OF THE RF MONITOR OR DRIVER/PRE-DRIVERS
ARE REPLACED OR ADJUSTED, THEN TRANSMITTER QUADRATURE SHOULD BE
CHECKED OR ALIGNED USING LOCAL CONTROL RADIATION, BEFORE RADIATING
HIGH POWER IN REMOTE CONTROL. HIGH POWER RADIATION IN MAINTENANCE
MODE UNDER LOCAL CONTROL DOES NOT REQUIRE QUADRATURE ALIGNMENT, NOR
DOES LOW POWER RADIATION IN REMOTE CONTROL OR LOCAL CONTROL."
3. FOR COMNAVSURFLANT/COMNAVSURFPAC - RECOMMEND CG 47 CLASS SHIPS
BE TASKED TO MODIFY REF A IAW PARA 2. ALL OTHER GUIDANCE CONTAINED
IN REF A IS STILL APPLICABLE.
4. ORIG POC IS MR. N. SMITHSON, PMS400F51H, DSN 332-5981, X133 OR
COMM (703) 602-5981, X133.//
BT
CG-47