[BC] Re: Oldest Transmitter still in daily service

[Lewis Munn]

Phil,
   
  One other minor point...worked for WCSR, in Hillsdale, Michigan, for a time.
   
  They were 250 night, 500 day then.  Daytime transmitter was a BC-500, using a 450-TL as the final...whatta bottle!!  I believe it had 810's as modulators.
   
  The night transmitter was a Raytheon RA-250A, and that was nice.  Push-pull RF final...never had a 2nd harmonic problem!!  Vacuum capacitors.
   
  Tho I dropped one once while cleaning, and it shattered, and all the vacuum rushed out and filled the room, but I was fortunate enough to get to a window and open it and let some outside air back in!!
   
  But the nicest point of the RA-250, a point loosely shared by the BC-1F, was that all circuits were metered and seen on the front panel.  Made a tuneup a snap, because you could see all the effects up and down the line.  And you could catch a dying tube at a glance, before it got serious.
   
  I know meters cost money, but so does engineer's time switching up and down thru many scales and having to retweak adjustments over and over to get everything tuning well.  Ahhh...the good old days.
   
  Looey Munn
  Roundup, MT  

Phil Alexander <dynotherm at earthlink.net> wrote:
  On 11 Dec 2005 at 22:03, Jerry Mathis wrote:

> But the RF and AF circuitry was excellent. Plenty of drive was designed into 

			
---------------------------------
Yahoo! Shopping
 Find Great Deals on Holiday Gifts at Yahoo! Shopping