Power Supplies

COLLINS MODEL 100 Variac controlled-metered for both volts and ma. 0-500 v at 200 ma. . . $55.00

PS 1. Zero to 400 vdc at 110 ma and 6.3 v A a. Variac controlled-metered . . $25,00

PS 2. Zero to 300 vdc al 60 ma and 6.3 v 3 a, Variac controlled and metered $20.00

PS 3- Zero to 300 vdc at 100 ma and 6.3 v 4 a. and 0-10 vdc bias. Variac and meter, tl. $30.00

PS 4. High voltage for CRT with 6.3 v and 2.5 v and intensity and focus controls. $15.00

PS 5. Small rig (5Y3)T plus 215 v, minus 30 v and 6.3 v . $7.95

PS 6* Grid bias supply, 2 scale, 0-5 and 0-25 vdc. Melered * * . < * .I . . , » , $7,95

6 VOLT KADI ART Vt&RAPACK SUP PU ES 300 V OC, 90 MA

Radiart 682lA(RCA Ml-

8391 A) used to mobilize AR-77 & AR-88 rcvrs, Input 6 to 8.5v dc as selected by a 4-position switch to xfrmr taps. The vibrator is Mallory 634C or Radiart VN-10 or any 4-pin non-synch replacement, At full load, the pack draws 12 amps, A 1 5A fuse is in the battery cord furnished. An 0Z4 tube rectifies. Output is altered Newr with instruction book, schematic, 8, parts list. 5hpg wt 12 lbs. Cat. No. 806VP 1, Only S2.95 each

Send for Catalog #131 All orders FOB Chicago—

NAVY QRM FILTER $1.95

T020 cycles. Same as the FL-8 but rnore elaborate with cord ond PL55 and switching control on slant panel for easy viewing.

85 kc if transformers ARC Command senes. S1.25 2830 kc if transformers, J.69

1415 kc if transformers. 15 mc if transformers. ^

190 to 550 kc. RF-ant-etc, 13 can assembly} 5.75

Spcciaf BC906—frequency meter—150 to 235 mc in handy carrying case. 500 microamp meter and National 4" velvet vernier worth for more than the special price of $7.50 used.

TRANSISTOR BOARDS. Pay only 5c per trans.stcr_ Other parts free. Minimum order. S2.50

DAVEN Frequency Meter—Direct indicating frequency meter covering 25 to 5000 cycles in four ranges

COLLINS—Single sideband multiplex generator using mechanical filter F84z-2 or similar. With schematic and data

SILICON CONTROLLED RECTIFIER GEC406 25 amp

SILICON TOP HAT. 600 P1V, 200 ma

SILICON TOP HAT. 750 P1V, 15 A,

SILICON TOP HAT. 200 PIV, K5 A.

SILICON STUD. 50 PIV, 5 A

2C39A TRIPLER cavity-less tube.

2500 CAVITY TUNER for 1 B40, 1B43 New, less tubes.

416B CAVITY complete with 416B tube. 4X150A SOCKETS. New 4-400 CHIMNEY (SK406) New, 4-1000 SOCKET (SK500) New, 1B37, 1B40, 1B43 tubes

Subject prior Sale. Illinois Residents add 4%

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