Page 1
CONTROL PHONES ANT. SWITCH c wo SWITCH TRIMMER CONTROL JACK National TRADE NAME National Co., Inc., 61 Sherman St., Maiden 48, Mass. MANUFACTURER AC Operated AM SuperheterodyneCommunications Receiver TYPE E ighteen TUBES 1.0 Amp@ 117Volts AC RATING 110-120 Volts POWER...
Page 3
POS. pos. POS. POS POS. POS. pos. pos. pos. POS. POS. pos. PLUG-IN NOTE: INDUCTANCE ADJUSTMENTS AT POSITION NO. 16 ARE AS FOLLOWS: l. A, B & C Coil Loop of wire form vay or Other adds or inductance. 2. D Coil Set Adjustable disc insi&...
Page 5
@6BA6 @6BA6 10000 0000 1 REG 0082 6BE6 n 000 SOOO @5V4G 240VAC 4H-4 S. S VAC SOOO 3 VAC PLUG A PHOTOFACT STANDARD NOTATION SCHEMATIC...
Page 6
@6SG7 CONVERSC* @6BE6 I N OFF m*TON 1000 z 20.v 2.2K 2.2K 'OCO 10000 OJ 6SN7GT 6SJ7 CRYSTAL SOCKET SOCKET 10000 l.sueo SHOWN CALIBRATE IF— 455 @6V6GT @6SJ7 100* 2.2K 220K @6V6GT...
Page 7
@6SG7 @6SG7 :sto I Sto •000 10000 '0000 2.2K PART NO. 4 6SK7 TYPE 016SN7GT I.SyEG NARROW ADAPTOR TEST QUARTZ JACK "ooec so—2 DC Voltage measurements are at 20.000 Ohms per vole; AC Voltage measured at 1,000 ohms per volt. Socket connections are shown...
Page 10
PARTS LIST AND DESCRIPTIONS (Continued) PARTS LIST AND DESCRIP CAPACITORS CONT.) EPLA T DA DC RES. REPLACEMENT DATA NATIONAL MILLER CORNELL. PART No. PART No. NATIONAL ERIE MALLORY SPRAGUE NOTE AEROVOX CAP. VOLT DUBILIER PART No. PART PART No. PART No.
Page 11
PARTS LIST DESCRIPTIONS RESISTANCE READINGS DIAL LIGHTS Tube Pin 2 Pin 4 REPLACEMENT DATA '500}«. 100Q 6BA6 ITEM 3. 5Meg NATIONAL NOTES BASE TYPE AMPS• COLOR t7.7KQ Bayonet Brown F 136—6 Type Bayonet Brown F136-6 22K': 22012 1.80 6BEe Bayonet...
Page 12
ALIGNMENT INSTRUCTIONS MAIN TUNING MAL main tuning dial should normally give no however, dial should removed from receiver it must not until m,Nnted the caßcitæ shaft Vith set scre•s tißlt. fiis the dial is mly for ten revoluticms (O to 500) if turned than this mechanism...
Page 13
ALIGNMENT FIRST CONVERSION CONVERTER ALIGNMENT SIGNAL SIGNAL BAND DUMAY Leave the signal generator connected as during Conversion IF Alißlrnent. GENERATOR GENERATOR SWITCI switch to AM. the AVC switch to OFF. Plug in phasing control at ZERO. coil Set the selectivity switch at OFF.
Page 14
CTIONS (CONT.) BAND SPREAD OSC. & RF ALIGNMENT OUTPUT It is important that general coverage alignment before bandspread alignment, since general coverage METER ADJUST REMARKS alignment affects bandspread alignment. General coverage alignment is not affected by bandspread ahgnment, so if mly bandspread alignment is required it may...
Page 15
PARTS LIST AND DESCRIPT PARTS LIST DESCRIPTIONS RESISTORS CONT TUBES(SYLVANIA or Equivalent) REPLACEMENT DATA RTMA RATING ITEM ITEM NOTES NATIONAL ITEM STANDARD NATIONAL PART PART No. OHMS WATT REPLACEMENT TYPE 220KQ 1569-53 BTS-220K R 60 1st.RF Amplifier 6BA6 8BA6 BTS-47DK...
Need help?
Do you have a question about the HRO-60 and is the answer not in the manual?
Questions and answers