| Show uso use proper tube TAC in right place in S set C A it has often beens been said ld thit th it no two watches run alike this con can ie be extended to take hike in tubes even to a greater degree decree there ere are hundreds of things that may make one tube function differently from another true ns is it may be ant a soft or gassy will ft make n better detector it hasteen Ins has been proved that some hard tubes are unexcelled for or detection even een where it a soft tubo tube wits was recommended try iff the original hookup it Is quite probable that some come of the amplifying tubes in your our set are better suited batted for or detec detectors tori it Is alo alio probable that your results might be bettered by placing the tube nov in the second stage of audio in 13 the first stage and vice rice versa like many other things in radio this Is best beat determined by actual test the problem that arises during these tests asta la in it may be easy enough to determine which tube tuba works best beat here and which one works ork beit there but but how la Is a fan to know one tube from another if the tubes happen to be removed from their sockets at any time the answer to this Is quite simple before ii going about tho test set up a list of symbols ns follows radio frequency amplification II 11 detector detect D I 1 audio frequency amplification A then add numbers where more than ane cne tube Is acting in the same ity hy thus us tt if you have hav e a anve five tae set U using two stages of radio frequency amplification detector and two stages of audio frequency amplification tho the symbols will read as follows ill il l 1 R 2 D al A l 1 A 2 set up these symbols go about the test and after you have found faund tile the best combination for the tubes start from left to right in your set rind and remove one tube at a time with a pointed instrument ment scrape the symbol on the bottom of each tube As for far as the test itself Is concerned dont think you can complete it in fifteen minutes rol mitos |
