Salt Lake Telegram | 1922-08-05 | Page 5 | Radio Sparks

f RADIO SPARKS f 4 By It 1 Il'N'AV Director Radio laatllate ( AsseHra. For selectlveness In tuning and all-around all-around efficiency, the regenerative act Is ths best. Practically all Its parts, with the exception of the vacuum tute, ran be made by tho amateur. The diagram shows the hook-up of the most efficient regenerates receiving receiv-ing act. o. i Is the vnrlo coupler. No. t. A varlnhlrr fsndenaer. Although Al-though thla Is not sbfolstelv necessary, neces-sary, this condsnscr add a select I vn ess In tuning. So. i. A variometer In tho grid circuit. . No. 4. Tho grid leak and grid condenser. No. I. Ths plate variometer or tickler. No. A tl-volt dry bat t err which may be purchased rn any electrical store for about $1 16. No. 7. Tha head phones, which should have between 1000 and S000 ohms resistance. No. S. A t-volt. t to no-ampere-hour battery for tho filament t tn tube, A Is the filament. B la the grid.! C la the plate. ... In wiring the aet use No. It or 111 copper wire and uae "spaghetti" Insulation. In-sulation. Try not have any of ths connecting wires running parallel. All of these psrts can be made. Tomorrow I will show you bow to do iu