813 rigs, etc. Cool artwork (ham op in tie) too.
http://www.hamnutz.com/w1eof/hamtips/1938/September 1938
VOL 1 - NO 1
* PAIR RCA 809's PUTS OVER 100 WATTS IN ANTENNA
* RCA 1852 AND 1853 HAVE HIGH GAIN UP TO 60 MEGACYLES
* RCA 814 GIVES GOOD OUTPUT WITH LOW DRIVING POWER
* 832 IDEAL FOR LINE-OF-SIGHT TRANSMITTERS
October 1938
VOL 1 - NO 2
* RAPID BAND CHANGE SIMPLIFIED WITH NEW RCA-814
* NEW RAC-813 BEAM POWER TUBE ECELLENT FOR HIGH POWER RIGS
* NEW METHOD USED FOR PRESENTING CIRCUITS
* TWO-TUBE EXCITER PROVIDES 10M OPERATION WITH 80M CRYSTAL
* LOW-LOSS SOCKET DESIGNED TO FIT NEW RCA-813 TUBE (UT-104)
* VOLTAGE REGULATOR TUBES OPERATE OVER WIDE LOAD CHANGES
November 1938
VOL 1 - NO 3
* PUSH-PULL RCA-810'S DELIVER 750 WATTS TO ANTENNA
* 50-WATT RIGS ARE EASILY MODERNIZED WITH NEW RCA-810
* RCA FILAMENT TYPE ACORN TUBES FB FOR U.H.F. UNITS
* TYPICAL CIRCUITS FOR RCA-810 SHOW SUITABLE WIRING CONSTANTS
* NEW TUBES: RCA-1616 AND RCA-1623
December 1938
VOL 1 - NO 4
* ONE-TUBE XTAL RIG GIVES 150-WATT OUTPUT ON C-W
* HIGH-POWER CRYSTAL OSCILLATOR A REALITY WITH RCA-813 TETRODE
* RCA 806 IS TOPS FOR HIGH-POWER HAM TRANSMITTERS
* FOUR TELEVISION TUBES ANNOUNCED FOR EXPERIMENTERS
* V-CUT CRYSTALS GREATLY REDUCE FREQUENCY DRIFT
* NEW FOUR-COLOR CARTON FOR RCA POWER & SPECIAL PURPOSE TUBES
