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Страница 1: ...L DESCRIPTION AND OPERATING INSTRUCTIONS _ l k I Hammarlund Manufacturing Company A Giannini Scientific Co 53 West 23rd Street New York 10 N Y Export Department 13 East 40th Street New York 16 N Y MANUAL PART NO 41383 1 FREE DOWNLOAD COURTESY OF N9SOR WWW HAMMARLUND ORG ...
Страница 2: ...conditional gO day warranty against defective material and workmanship in this receiver the warranty card must be filled out and mailed within two weeks of purchase Please refer to serial number of warranty in correspondence I THE HAMMARLUND MANUFACTURING CO A GIANNINI SCIENTIFIC CO 53 West 23rd Street New York 10 N Y FREE DOWNLOAD COURTESY OF N9SOR WWW HAMMARLUND ORG ...
Страница 3: ...Pentagrid Converter Twin Triode Pentode Triode Pentode Triple Diode Pentode Pentode Triode Gas Filled Diode Twin Diode Function RF Amplifier Mixer Converter Q Multiplier First AF Amplifier First IF Amplifier Linear Detector Second IF Amplifier BFO Detector Noise Limiter AVC AF Output Crystal Calibrator Oscillator HF Oscillator Voltage Regulator Rectifier 11 FREE DOWNLOAD COURTESY OF N9SOR WWW HAMM...
Страница 4: ... the selectivity of the receiver A new audio output circuit feature is the Auto Re sponse which automatically narrows and widens the frequency range of the audio output according to the gain required This feature permits higher fidel ity reception on stronger signals while providing the sharp cutoff required in receiving communica tions under adverse conditions A second advantage of the Hammarlund...
Страница 5: ...f Single wire Antenna NOTE I INNER CONDUCTOR TO PIN SHIELD TO SHELL OF PWG 2 WHEN USING 6 METER COAXIAL CABLE OPEN LINK BETWEEN 6M AND UNMARKED TERMINAL Figure 3 Installation of Folded Dipole Antenna 2 FREE DOWNLOAD COURTESY OF N9SOR WWW HAMMARLUND ORG ...
Страница 6: ...ed with 300 ohm transmission line or other suitable lead in as shown in figure 3 To tune the one half wave length dipole the follow ing formula for the length of the antenna may be used 468 Length feet Freq MCS Each half 1 4 wave length is half the length found from the above formula A one half wave dipole can be used on 6 meters but a commercial beam will perform better A separate coax socket inp...
Страница 7: ...CTION Switch AUDIO GAIN Control LIM Switch Noise Limiter 9 8 INDEX NO 8 9 10 11 12 13 14 7 6 5 CONTROL TUNING RANGE Switch Band Selector MAN AVC Switch SENSITIVITY Control TUNING Control ANTENNA Trimmer CW PITCH Control Beat Frequency Oscilla tor Telechron Automatic Clock Timer Figure 5 Location of Controls 4 FREE DOWNLOAD COURTESY OF N9SOR WWW HAMMARLUND ORG ...
Страница 8: ...eception of speech and decreases the noise output of the receiver A further advantage is the reduction of distortion at low settings of the AUDIO GAIN control CODE SIGNAL RECEPTION For CW code reception the position of the controls should be as follows FUNCTION Switch __ _CW SSB TUNING RANGE Switch _Set to desired frequency range MAN AVC Switch _ MAN FREQ Control _ Set pointer to triangular marker...
Страница 9: ...ration should be foun d to be beyond the range of the CAL SET control the HF Oscillator will re quire readjustment see under SERVICE AND RE ALIGNMENT On switching from the CW SSB position to the CAL position an increase in level will be noticed This is done deliberately to provide additional gain for the higher order harmonics of the 100 KCS crystal calibrator regardless of whether the receiver is...
Страница 10: ...iter and a separate highly stable Beat Frequency Oscillator PRESELECTION The antenna input coupling and RF amplifier stage provide the necessary preselection and gain for high performance and rejection of undesired signals The high signal level at the mixer grid V2 contributes to a favorable signal to noise ratio Both grid and plate circuits of the RF stage are tuned individual tuning coils are se...
Страница 11: ...first conversion is to an Intermediate frequency of 3035 KCS employing two tuned circuits and the second conversion is to the 455 KCS Intermediate frequency employing seven tuned circuits Iron core permeability tuned transformers improve performance and add to the ease of adjustment AVC SYSTEM Automatic Volume Control minimizes fading and signal strength variations by controlling the gain of the R...
Страница 12: ...ximately 2000 cycles above or below zero beat should be employed In other words if the beat frequency oscillator CW PITCH control is set two degrees clockwise or coun terclockwise from the center position optimum single side band reception will usually be obtained Whether the beat frequency oscillator control will be set clockwise from zero beat will depend on whether upper or lower side band is b...
Страница 13: ...n all of the high frequency bands plus a microphonic condition is usually the re sult of a poor type 6C4 high frequency oscillator or VI0 in the schematic diagram This tube is also capable of producing a poor beat note that may have a ripple in it especially noticeable on the high frequency bands 4 Excessive drift can also be attributed to a poor 6BE6 employed in position V2 In addition the 6BE6 e...
Страница 14: ... from the clock adjustment shaft if receiver is so equipped Lift cabinet straight up and off of chassis To reassemble use reverse procedure ADJUST OSC SLUGS AND TRIMMERS AT INDICATED FREQUENCIES FROM TOP ANTENNA ADJUSTMENTS RF ADJUSTMENTS MCS CRYSTAL IF ADJUST MENTS 455 KCS 21 7 1 8 TOP SLUG 28 14 3 5 BOTTOM SLUG 3 5 21 MCS CALIBRATOR TRI MMER C36 28 7 0 VI2 7 14 21 28 OSCILLATOR ADJUSTMENTS MCS T...
Страница 15: ...or negative voltage reading to terminal 2 of the T5 IF transfonner and chassis ground c Set the receiver controls as follows CAL SET control on marker FUNCTION switch on REC Tuning dial on 1 8 mc Noise limiter LM switch on OFF AUDIO GAIN control at minimum SELECTIVITY control OFF TUNING RANGE switch on 1 8 2 0 mc MAN AVC switch on MAN SENSITIVITY control on 3 from maximum d During alignment adjust...
Страница 16: ...eat higher frequency hands Final adjustment should Turn the collar so that the long set screw is in a he accomplished hy comhined or alternate ad position 180 degrees from the stop lug Holding justment of the oscillator and RF for maximum it in this position tighten the set screws making amplitude sure that the shaft has not turned from the zero Note heat position The trimmer adjustments if requir...
Страница 17: ...nce the tuning bands of HQ llOA do not include anyone of these frequencies To re zero the calibrator connect A wire to the antenna terminal of the HQ IlOA farthest away from the ground terminal The other end of this wire is connected to the antenna terminal of the receiver used for Heterodyning During this pro cedure the link between the ground terminal and nearest antenna terminal of HQIlOA shoul...
Страница 18: ... ac 235 105 Min V2 MIXER 6BE6 Approx 4 8 1 9 6 3 ac 215 105 V3 CONVERTER 6BE6 3 2 6 3 ac 233 82 V4 Q MULT Ist AF 12AX7 233 2 5 6 3 ac 6 3 ac 88 8 V5 1st IF 6BA6 6 3 ac 230 105 2 3 68 SENS MIN V6 LIN DET 2nd IF BFO 200 145 2 75 6 3 ac 0 67 Approx 6AZ8 68 SENS MIN 4 6 V7 DET LIM AVC 6 2 2 34 34 6BJ7 ONREC 6 3 ac onREC onREC onREC V8AFOUTPUT 6AQ5 13 2 6 3 ac 260 240 V9 CALIBRATOR 12 to 58 9 2 105 to ...
Страница 19: ...E6 22K 160 0 15K 8 7K 0 V3 CONVERTER 6BE6 22K 1 6 0 5 7K 12K 0 V4 Q MULT lst AF 14 3K 12AX7 5 7K 2 2 Meg 4 3K Sel 505K 1 Meg 2 2K 0 max 150 V5 1st IF lOOK 0 0 5 7K 8 7K 10K Sens 6BA6 mIn V6 LIN DET 2nd 200 lOOK IFBFO 4 7K 38K 10K Sens 0 110K Sens 0 52K 47K 6AZ8 mIn min V7 DET LIM AVC 6BJ7 0 195K 0 0 470K ONAVC 4 7K 2 2 Meg 2 2 Meg V8 AF OUTPUT 6AQ5 500K 430 0 5 3K 4 7K 500K V9 CALIBRATOR Inf Inf 6...
Страница 20: ... C56 Variable Trimmer 1 8 MMF C57 Temp Compo Oisc 15 MMF N330 50 0 1000V C58 Variable Trimmer 1 8 MMF C59 Temp Compo Oisc 4 7 MMF N750 50 0 1000V C60 Variable Trimmer 1 8 MMF C61 Our Mica OM 15 7 MMF 5 MMF 500V C62 63 Our Mica OM 15 47 MMF 5 MMF 300V C64 Our Mica OM 15 100 MMF 10 500V C65 Oisc Ceramic 01 MF 80 20 600V C66 67 Our Mica OM 30 4300 MMF 5 500V C68 Our Mica OM 19 510 MMF 50 0 500V C69 O...
Страница 21: ...FIXEO 10 6 W UNLESS OTHER WISE SPECIFIEO 10 ohms 180 ohms 5 W Variable l 5K and 10K Oual with R24 and S5 10 ohms 470K lOOK 22K 160 Ohms 50 0 lh W 47K 4300 Ohms 50 0 6 W Variable Selectivity 10K with tandem switch SI 2 2 Meg IK lOOK IK 150 Ohms 50 0 6 W 1 2K 5 6 W Variable Meter Adj 200 Ohms lOOK 33K 4 7K Variable 10K See R3 1 0 Meg 2 2 Meg 470K 220K 4 7K Variable Audio 1 0 Meg 47 Ohms 100 Ohms 2 2...
Страница 22: ...d 7 50 0 to 54 0 MC M38938 1 T14 Export Power Pri 115V 60 Cycle Sec 230 0 230V IlOMA M38938 2 T16 Power Pri 115 230V 60 Cycles Sec 230 0 230V IIOMA K38932 1 Tl7 RF Coil Assembly B lnds I and 2 1 8 2 0 and 3 54 0 MC K38933 1 T18 RF Coil Assembly Bands 3 and 4 7 0 7 3 and 14 0 14 4 MC K38934 1 T19 RF Coil Assembly Bands 5 and 6 21 0 21 6 and 28 0 30 0 MC RF Coil Assembly Band 7 50 0 54 0 MC K38944 2...
Страница 23: ...the proper trimmer is selected then make the adjustments very slowly and care fully This procedure is only being incorporated in this resume for the experienced amateur operator in an effort to avoid the return of the receiver with the resultant delay If you are in the least bit hesitant about making these adjustments please do not attempt it We might also point out at this time that any minor adj...
Страница 24: ...5 SPKR 3 2 OHMS 01 10 CONV 6BE6 II o o CIOO Reg OB2 e D Reet 5U4 GB DDD 68 DDD8 Q IF BFO Det v J 6A Z 8 D G AVC Det Lim Y 6BJ7 D 6 6 D Pre Amp Ext Phone Power Ant Relay 1 01 10 o QJo Met J ero 6M Ant PT 39118 Component Location Diagram FREE DOWNLOAD COURTESY OF N9SOR WWW HAMMARLUND ORG ...
Страница 25: ...5 IMEG UF _ E lOOK CZ6r R3 S6E 2 C69 L 4 6 _ 3 J F Ztj5g L R45 3K C79 T R39 4 7 C63 SIO OPE TES WITH R38R24 i T20 lOOK N47j 47 7 VIO V6B 6C4 1 2 6AZ8 l S5 1it l r rC 4 0 t C52 a H F OSC 4 1 3 35 243 I rO TI4J C51 frrC53 I L6 1lllHpcxtf 1 8 r 15 _L J 240 1110 I _ vv o c 8 I II I 01 UF 50 f Z3B 6 1I C71 1 UHY oliS 1 R7 7 rtUUF E4_00V 69 C86 r L dl D I u 1 1 _ Q V 12 24 T21 1 lDlQ I C67 J 1 6 2 C 6A ...
Страница 26: ... I I I L CI8 J 01 UF R44 10K z n I Z31 I I C85 10 1 C74 0 0 363 13 RI4 IK 56 L I TI3 560 REAR C60 1 8 C84 I 12 C75 NOTE 66 RESISTORS ARE 1 2 W AND VALUE OTHERWISE NOTED CAPACITORS ARE IN MICRO MICR OTHERWISE NOTED FREE DOWNLOAD COURTESY OF N9SOR WWW HAMMARLUND ORG ...
Страница 27: ...46 13 32 from Eyelet Centers Spring Part No 38895 1 IIi After Cable Replacement Align Dial Scale Marking with Window Fiducial Centered within in CAUTION Do not loosen Pulley Screws During Installation of Cable Figure JJ Installation of Dial Cable Assembly 23 FREE DOWNLOAD COURTESY OF N9SOR WWW HAMMARLUND ORG ...
Страница 28: ...ED A L J RED BLACK PLASTIC LEAD _ _ POWER TRANS f d H BLACK YELLOW BLACK BLACK GREEN A C LINE SHORT CREW 1 4 LG T1NNERMAN NUT PLACE BETWEEN CLOCK PLATES AT POSITION A A ONLY Figure J2 Standard Clock J J5V 50 or 60 CPS Wiring Diagram 24 FREE DOWNLOAD COURTESY OF N9SOR WWW HAMMARLUND ORG ...
Страница 29: ... 20 W 5 0 0 SEE NOTE BE SOLDERED J A C LINE NOTE THE 4400n SHORT SCREW1 RESISTOR MUST BE 1 4 LG I JUMPED OR SHORT I CIRCUITED FOR 115 117 VOLT OPERATION __J I TINNERNAN NUT __J PLACE I ETWEEN J CLOCK PLATES AT POSITION A A ONLY Figure J3 Export Model Clock 230V 50 or 60 CPS Wiring Diagram 25 FREE DOWNLOAD COURTESY OF N9SOR WWW HAMMARLUND ORG ...
Страница 30: ...m MEMORANDA 26 FREE DOWNLOAD COURTESY OF N9SOR WWW HAMMARLUND ORG ...
Страница 31: ...ipment to function properly or for any consequential damages This Warranty is valid for the original owner of the equipment and is contingent upon receipt of the Warranty Registration Card by the Company No equipment shall be returned to the factory for repairs under warranty unless written authorization Is obtained by the Company and the equipment Is shipped prepaid by the owner The Company maint...
Страница 32: ...ESTABLISHED 1910 ISSUE 7 62 MANUAL PART NO 41383 1 FREE DOWNLOAD COURTESY OF N9SOR WWW HAMMARLUND ORG ...
