Heath Company Heathkit BR-2 Assembly And Use Download | Manualshive

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Summary of Contents for Heathkit BR-2

Page 1: ...B IL Ct eP n t t J P N S T S iBiffr 9 4r TlF A55EMBI ING AND YOUR U5I otro BROADCAST RECEIVER MODEL BR 2 BAND AMATTUR RADIO vE 3 TS P O Box 662 SARN A ONif...

Page 2: ...r input with resistance of 100 000 ohms ormore 110 V outlet provided for amplifier phono player etc Phonograph Input 1 megohm high impedance for optimum per formance with any good quality crystal or c...

Page 3: ...n 2w o5 MFD r GREEN DOT I 2AV6 A 7 MEG ll I lLl uf t oLUM E t2a6 I 2o MFD WIRING OI EXPORT TYPE 110 220 VOLT POWER TRSSIORMERS These transfolmers have a dual primary for use on either 110 Volts or 220...

Page 4: ...nas The 12BE6 is a multi grid tube commonly known as a pentagrid converter Its function is to amplify the incoming radio frequency RF signals and mix them with a signal from the oscilla tor which is a...

Page 5: ...f these pulses or ripple or only a load buzz will be heard in the speaker It is for this reason that the high capacity filter condenser is used The first section of the condenser charges to the voltag...

Page 6: ...ture reference both in the use of the BR 2 and for its maintenance UNPACK THE KiT CAREFULLY AND CHECK EACH PART AGAINST THE PARTS LIST In so doing you wiil become acquainted with each part Refer to th...

Page 7: ...rocedure 3 Layout all parts so that they arereadiiy available Referto the general information inside the front and back covers of this manual to help you identify the components In assembling the kit...

Page 8: ...no 0 U Oru s G e oWl o o 9 mr m R w o 1 PICTORIAL 1 PICTORIAL 2 Note The above diagrams are repeated in the largefold inpictorials included with this manual I it oo aS v bas tsl ffi it T da m 6 nn po...

Page 9: ...hole V The electroiytic filter condenser is mounted on top of the chassis through the wafer al ready mounted at hole K The I marked terminal must face the holes B and M as illustrated on Pictorial 1 R...

Page 10: ...ounting screws A 6 32 x3 LG screw is pushed through a lockwasher the mounting lug on oscillator coil P the chassis hole nearest hole U and into the appropriate hole in the tuning condenser frame A 6 3...

Page 11: ...iring instructions read Connect one end of a 470 O resistor to EB S it will be understood that the connecti on is to be made to cont act number B on socket E The abbreviation S indicates that the conn...

Page 12: ...t b PICTORIAL 3 a ra 3 7o ffi I PICTORIAL 4 Page 11...

Page 13: ...aters of the tubes which in turn heat the cathodes fwist together the two yellow leads of the power transformer coming through hole V Cut these leads to length suJficient to reach DB and D2 Strip and...

Page 14: ...llator coiI the 22 K0 resistor and the rear section of the tuning condenser make up the oscillator circuit The rod antenna which wiil be installed later and the front section of the tuning condenser t...

Page 15: ...orange from K r NS to E6 NS This pin makes no conneetion to the 12 4 6 tube and so is used as a tie point fnstatt a 005 pfd condenser from E3 S to K r S The black band faces condenser K Run a wire fro...

Page 16: ...end only Cut a piece of wire to a length of 4 Strip and tin both ends and push the wire through the shielding Connect the end of the shield to H1 S t Attach the adjacent end of the center wire to J3 S...

Page 17: ...ough holeY and connect the wire to controi W3 S Con nect the adjacent end of the Spirashield to W5 NS Instali a 05 pfd condenser from W4 S to terminal lug X NS Strip out about 2 at one end of the rema...

Page 18: ...12 4 6 and the plate of the 12AV6 tubes thus effectively cutting them off The circuit is much the same if phonograph wiring is followed except that the voitage is re moveci from the 12BE6 and 128 6tu...

Page 19: ...drive as shown using dialcord and the dial cord tension spring Hook the diat pointer over the edge of the dial plate and slip the dial cord between the ugs on the pointer With the tuning condenser fui...

Page 20: ...s should show color Now insert the 5Y3 tube in its socket Tnis tube should also show filament color If the 5Y3 plates show a red color or if the Fr tube shows a bright violet gLow internally turn the...

Page 21: ...eceiver be aligned with a si gnal generator as previously described A local serviceman will usually perform this service for a reasonable fee To align the receiver without a generator tune in a strong...

Page 22: ...uld be heard in the speak er If not check the wiring to this stage once again If the wiring appears tobe correct check the tube Di sconnect the 02 prfd condenser from pin 5 and repeat the procedure If...

Page 23: ...ht amount at a time at the same time rocking the funing controiback and forth until a point is found where the signal strength is strongest at the tow uia of the dial If the signal drops off when the...

Page 24: ...RED ADEQUATE FOR SAFE SHIPMENT OF THE COMPLETED INSTRUMENT Ship by PTCPAid express if possible Return shipment will be made by express collect Note that a carrier cannot be held liable for damage in t...

Page 25: ...2 1 204 9 4 204 M46 2 258 4 1 462 14 2 463 1 1 Transf ormers Speaker 51 3 1 54 3 1 Wire B9 1 1 206 6 1 340 2 1 344 t 1 Miscellaneous 200 M4B 1 595 62 1 DiaI plate assembly DiaI pulley assembly Dial co...

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