. QST . LET A HINTSTRAIGHTEN OUT A Jdnk! C onfused over something? Let the latestedition, Volume Five, of ARRL Hints &Kinks give you a helping hand and saveyou grief and time. Youd be surprised atthe shortcuts and tips listed in this book. J\s its cover says, it is a symposium of333 practical ideas for the station andworkshop, and the Ready-Reference In-dex, a new feature, will help you findinformation quickly and easily. $ U. S. A. Proper — Elsewhere, $ American Radio Relay League West Hartford 7, Conn. ##»»###»###########»^##############^^#####.. 5) Change R%i from 4700 ohms, J^ w
. QST . LET A HINTSTRAIGHTEN OUT A Jdnk! C onfused over something? Let the latestedition, Volume Five, of ARRL Hints &Kinks give you a helping hand and saveyou grief and time. Youd be surprised atthe shortcuts and tips listed in this book. J\s its cover says, it is a symposium of333 practical ideas for the station andworkshop, and the Ready-Reference In-dex, a new feature, will help you findinformation quickly and easily. $ U. S. A. Proper — Elsewhere, $ American Radio Relay League West Hartford 7, Conn. ##»»###»###########»^##############^^#####.. 5) Change R%i from 4700 ohms, J^ watt to 10,000 ohms,y^ watt. 6) Change R&i to 150 ohms, ]4 watt (S-meter shunt). 7) Remove from Pin 3 of mechanical filter boxassembly. Connect Pin 3 of filter box to junction of R^t, Rbi( gain control and minimum bias resistor). Appendix III Conversion of 75A-2 to replace 6BE6 mixerswith 6BA7s. 1) Carefully unsolder pin connections of V2 and F4. 2) Remove 7-pin tube sockets and ream out holes to% inch for clearance of 9-pin sockets. Be sure that all loosechips are removed from set, especially around bandswitches. 3) Mount new tube sockets. Orient V2 socket so that Pin7 is closest to amplifier. Orient F4 socket so that Pin 2is closest to crystal oscillator tube, F3. 4) Wire sockets per schematics in Fig. 4, being surethat all grid and plate leads are as short as possible and thatall chassis connections are returned to the same point theywere made to in the original set-up. Appendix IV Revision to improve shape of selectivitycur
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectradio, bookyear1915
