DR1200T.2

     A Modification for the DR1200T to prevent lamp burnouts:
				Part 1 of 4 Parts
        From Jim, KD6QVO, Santa Clara, CA, and Lou, KE6EOI, Milpitas, CA. 
     
     My bad experience with my Alinco DR1200T data radio prompted me to 
     seek a better solution than just replacing lamps every year or sooner.  
     I posted an ALLUS bulletin on Alinco DR1200T lamp burnouts.  Several
     Hams reponded to me from over the U.S.A. expressing their similar 
     problems with Alinco radios having early lamp failures.  So far, I 
     have even gotten a reply from a Kenwood owner too!
     
     With the technical expertise of Lou, my DR1200T now has all lamps 
     replaced and an OFF/ON switch installed to control all lamps but the 
     Power LED.  Here are the instructions as written by Lou for lamp 
     replacement info and how-to stuff.

     Alinco shows 2 P/N's in the DR1200T svc. manual. BQ031-40608A used for 
     the 3 switches (these have a removable blue filter), and BQ031-40604A 
     the 2 to backlight the display. Only BQ031-40608A is available from
     Alinco at $1.50 ea. plus shipping ($3.00), so you must remove the 
     filter for the display application. You need a total of 5 lamps for 
     the job, replace all 5 since the good ones will die soon. The lamps 
     from Alinco are T1 (1/8 dia x 1/4 long with 1 3/8 leads) and are 
     identical to Chicago miniature CM 8111 or JKL P/N 8111 with the 
     following ratings: 14V; 0.065A; 0.150 MSCP (intensity unit), and a 
     10,000 Hr life (actual is more like 5,000 Hr). 

			Continued in Part 2 of 4
   
CONT IN DR1200T.3