Show only two dials need be bc adjusted to tune the wiring diagram of 0 ono one of the simplest poi possible regenerative cir circuits cults will be found in ili this column co lunin this circuit Is ideal for portable wo use ns as it can call bo be made very compact and la is very onsy easy to operate As may inny ho be meen from froin the diagram only t to 0 mills dials need he be adjusted to tuno the set they are tile which controls tile regeneration anti tile tho condenser which controls tho the wave length the parts required for tho the boust coust construction rul of athla 3 portable are ono to meters ono one variable condenser niad ono one grid condenser ined diagram showing circuit ideal for portable use ono grid leak approximately 8 Dl CROllin one UV or 0 20 tube one 4 volt voit A battery one 2212 22 volt it II battery ono one boohm BO 80 ohm rheostat ono one typo UV socket panel cabinet binding posts boata etc when mien building this circuit two things should be remembered first that UV tube give best results lit in sets seta of this type and second that a phone bypass by pass condenser must not bo be used also when operating the set bet take care not to short circuit the aerial anti and ground posts its as this also short circuits the ill n battery now new york herald tribune |