AN/PDR-27G and AN/PDR-27R RADIAC Meters
 
 

 
 
AN/PDR-27G
 
 
The AN/PDR-27G is a member of the first generation of AN/PDR-27 RADIAC meters that is comprised of the AN/PDR-27 through AN/PDR-27H. It runs on two 1½ volt cells, one 22½ volt battery and two 67½ volt batteries. In later years, a special transistorized power supply became available that allowed the units to be operated from five standard "D" cells.
 

 
 
AN/PDR-27R
 
 
The AN/PDR-27R is the third generation of the AN/PDR-27 RADIAC meter series. It runs on six standard "D" cells and was the first fully transistorized unit in the AN/PDR-27 series.
 

 
 
Headphones
 
 
The original H-43/U headphones are hard to come by and are very uncomfortable. The newer H-43B/U appear ocassionally as surplus but they tend to run in the US$30 range. Since the audio output of the AN/PDR-27(*) series is high impedance, just about any high impedance headphones should work fine with an adapter. In the following pictures, I have a pair of Telex model 610 headphones along with a 1/4" audio jack to BNC plug adapter that I made using a BNC plug, a short length of RG-58 coax cable and a RadioShack #274-340 1/4" inline jack. The headphones are inexpensive, comfortable and work fine with the AN/PDR-27G and AN/PDR-27R. For those who do not wish to build an adapter, the Pomona 4043 adapter should work though it is a bit pricey and will most likely cost more than a set of H-43B/U headphones.
 

 
 
Manuals
 
 
  • TM 11-6665-230-12
    		• AN/PDR-27R OPERATOR’S AND ORGANIZATIONAL MAINTENANCE MANUAL
  • TM 11-6665-230-12HR
    		• AN/PDR-27R HAND RECEIPT
  • TM 11-6665-230-20P
    		• AN/PDR-27R ORGANIZATIONAL MAINTENANCE REPAIR PARTS AND SPECIAL TOOLS LISTS
  • TM 11-6665-230-34
    		• AN/PDR-27R DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL
  • TM 11-6665-230-40P
    		• AN/PDR-27R GENERAL SUPPORT, MAINTENANCE, REPAIR PARTS AND SPECIAL TOOLS LISTS
     
  • TM 11-6665-228-15*
    		• AN/PDR-27G OPERATOR'S, ORGANIZATIONAL, DIRECT SUPPORT, GENERAL SUPPORT, AND DEPOT MAINTENANCE
  • TM 11-6665-228-20P
    		• AN/PDR-27G ORGANIZATIONAL MAINTENANCE REPAIR PARTS AND SPECIAL TOOLS LISTS
  • TM 11-6665-228-40P
    		• AN/PDR-27G GENERAL SUPPORT MAINTENANCE REPAIR PARTS AND SPECIAL TOOLS LISTS
     
  • TM 11-6665-209-10*
    		• AN/PDR-27J, AN/PDR-27L AND AN/PDR-27Q OPERATOR'S MANUAL
  • TM 11-6665-209-10HR
    		• AN/PDR-27J, AN/PDR-27L AND AN/PDR-27Q HAND RECEIPT
  • TM 11-6665-209-20
    		• AN/PDR-27J, AN/PDR-27L AND AN/PDR-27Q ORGANIZATIONAL MAINTENANCE MANUAL
  • TM 11-6665-209-40
    		• AN/PDR-27J, AN/PDR-27L AND AN/PDR-27Q GENERAL SUPPORT AND MAINTENANCE MANUAL
     
  • TM 11-6665-224-20P
    		• AN/PDR-27P ORGANIZATIONAL MAINTENANCE REPAIR PARTS AND SPECIAL TOOLS LISTS
  • TM 11-6665-224-40P
    		• AN/PDR-27P GENERAL SUPPORT MAINTENANCE REPAIR PARTS AND SPECIAL TOOLS LISTS
     
  • TM 11-6665-227-12
    		• AN/UDM-2 OPERATOR'S AND ORGANIZATIONAL MAINTENANCE MANUAL
     
  • TM 11-6665-361-10*
    		• OPERATOR'S MANUAL FOR RADIOACTIVE TEST SAMPLE, KRYPTON 85, GAMMA, MX-7338/PDR-27
     
  • TM 11-5965-247-12P*
    		• OPERATOR AND ORGANIZATIONAL MAINTENANCE REPAIR PARTS AND SPECIAL TOOLS LIST
    AND MAINTENANCE ALLOCATION CHART, HEADSET, ELECTRICAL H-43B/U
  • TM 11-5965-247-35P*
    		• FIELD AND DEPOT MAINTENANCE REPAIR PARTS AND SPECIAL TOOLS LIST, HEADSET-ELECTRICAL H-43B/U
     
  • TM 55-315
    		• TRANSPORTABILITY GUIDANCE FOR SAFE TRANSPORT OF RADIOACTIVE MATERIALS
     
  • TB 9-6665-285-15
    		• ARMY CALIBRATION PROGRAM FOR RADIAC INSTRUMENTATION
     
  • MIL-STD-196E
    		• DEPARTMENT OF DEFENSE STANDARD PRACTICE - JOINT ELECTRONICS TYPE DESIGNATION SYSTEM
     
    * I am looking for either PDF (preferred) or hardcopy versions of these manuals (provided they are not restricted) and would be willing to trade. Please contact me at the email address below if you have any of these.
 
robert (at) schaffrath (dot) net
 
Last modified April 1, 2008