This vintage radio is in excellent cosmetic condition. After the sx 88 things slowly improved again as smaller tubes and most other components opened up access. Hallicrafters sx42 vs sx 43 read 940 times 0 members and 1 guest are viewing this topic. The sx 28 is a well engineered and heavy single conversion broadcast and hf receiver offering coverage from. In the course of removing the repairmans temporary hotwiring, i also uncovered further problems, each of which had to be remedied before proceeding further. Hallicrafters model s40 hallicrafters chicago, illinois, usa model s40 years produced. It is a minor upgrade of the s40 and s40a with one less tube but all the same functions. It is a model 80, and includes the country of italian east africa which only existed from 19361941. Looking a the schematics of the hallicrafters receivers, subsequent to the sx 42, the 6h6 continued, as the noise limiter, for several years. If you have visited here before, dont forget you may need to refresh your browser to see new content.
The rider schematic for the 2nd revision is the only one compared with the sams photofact set, and the 1st revision of the rider schematic that does not have so3 and pl3 socket 3 and plug 3 for the connection at the output. Introduced in 1947, a year after the sx 42, the sx 43 uses a ratio detector in place of the sx 42 s limiterdiscriminator and singleended audio in place of pushpull audio. The model sx 42 is designed for a 300 ohm antenna impedance. After examining the schematics carefuly, i have detected no differences in circuitry nor tube types.
The hallicrafters sx 42 is a single conversion superheterodyne receiver with 15 tubes. Hallicrafters s38 shortwave ham radio receiver for sale. Every paper capacitor except 2 have been replaced, and almost every resistor also. This is the home of all things hallicrafters equipment information, ontheair hf nets, email reflector, nostalgia, hallicrafters special event station w9wze, shortwave listening which is most enjoyable when using a classic hallicrafters receiver, and other features. The white dials were for the earlier models approximately 19491950 and the black dials came out in the later years of production. The cover is not very pretty, but that is exactly how the original looks. I am now accepting new manuals for inclusion in this archive. Please check my feedback for lots of nice comments on my manuals. Hallicrafters manuals manuals always wanted please if you have a manual that is missing from this section. Hallicrafters sx 42 restoration see here for the matching r 42 speaker.
Operating instructions manual, operating instructions. I made a near match out of light flexible coax and added a 50k ohm resistor at the very end as called for in the schematic. All of the sx 101 models had 7 bandswitch positions but it depended on the model as to if the receiver had 160 meters or the converter. Gjs tube drrectly to ground the parts lrst should be changed to read as follows rdcw no temp coeff hallrcruhers sp 44 and sx 42 these models appear on pages 17 1 to 17 5 and 17 6 to 17 16 respeclwely ofr1de1s volume xvii when. True, the hallicrafters sx42 is a quaint period piece and cannot be compared fairly with todays offerings. How to repair recap hallicrafters s40a tube shortwave. Your new hallicrafters sx100 selectable sideband receiver is precision built to bring. Can capacitors and recap kits for hallicrafters hayseed. The spline nuts on hallicrafters, national, and other equipments can be a real bugger. In some ways it cannot even compete with great radios of its day, such as the r390a. As a junior high student way back in 1978, i had a natural interest in radios. Here is a slideshow showing the components ive replaced on a hallicrafters sx42. I assume that it has a bad capacitor or two or more. The plain sx 101 through the sx 101 mark iii had the 160 meter band whereas the sx 101 mark iiia and the sx 101a had the converter band.
My dad was a ham radio operator, electronics engineer, and designer. The radio lights up but does not receive and the smeter is inoperative. My sx 42 has a fairly high serial number, 1111xx and has the 6h6 noise limiter. This is a very nice combbound reprint of the operating instructions for the sx 42 receiver. Hallicrafters sx28 restoration by thomas bonomo k6ad. This receiver has 2each miniature tubes, 6ag5, in the 1st r. All of these sets feature electrical bandspread, bfo, an rf amp and two stages of if amplification. A neat article written by bill halligan thats why its hallicrafters about the sx42. Model sx 42 was the topoftheline hallicrafters radio of its time, and the company promoted it accordingly. The rear panel has antenna and speaker connections.
Cambridge communications and technical services inc. This is my favorite receiver and it was made the same year i was born. These manuals are available for download and free of charge. Hayseed hamfest supplies brand new multisection can capacitors and discrete capacitor replacement kits for hallicrafters gear. The interior appears to possibly have a crystal calibrator added. The hallicrafters sx42 was one of the first post ww2 general coverage receivers to. The odds of finding a perfect match between any particular sx 42 and any published schematic is somewhat slim. In this page you find schematic, users and instructions manuals, service manuals, technical supplement, leaf leads and other good stuff. The other file is an enlarged sx 42 schematic early version in eight, labeled, overlapping 8. The sx 42 was introduced for the 1947 model year and is a transitional design from octal loctal tubes to miniature tubes. Dec 04, 2016 the story and restoration of my hallicrafters sx 42.
Introduced in 1947, a year after the sx 42, the sx 43 uses a ratio detector in place of the sx 42 s limiterdiscriminator and singleended audio in place of pushpul. There are two basic sx 42 schematics, each with multiple revisions indicated by the letter at the end of the schematic number. After oiling and minor adjustments it works like a charm. This is a photofact repair info for hallicrafters model 8r40 8r40c multiband radio receiver. True, the hallicrafters sx 42 is a quaint period piece and cannot be compared fairly with todays offerings. Antique radio forums view topic hallicrafters sx42 repair. Unfollow hallicrafters sx 42 to stop getting updates on your ebay feed. Jamess hallicrafters sx42 repairrestoration project. Manuals for hallicrafters this is the manuals page for hallicrafters. Hallicrafters sx 42 when joining hamradioforum you will get a confirmation email which you need to respond to.
Jamess hallicrafters sx42 repairrestoration project part i. This, coupled with the fact that none of the chassis circuit had been. Based upon the rider schematics, i hereby conclude that i have the 2nd revision of the hallicrafters s40. The switch should not be capable of moving directly from the. Looking a the schematics of the hallicrafters receivers, subsequent to the sx42, the 6h6 continued, as the noise limiter, for several years. The circuit for this model changed several times over its production life. Here is the chassis after a lot of cleaning and polishing. The sx 42 was also featured in fullpage ads in the april, 1947 and december, 1946 issues of radio news. Its features also appealed to the most demanding radio listeners. The pitch of a cw signal may be varied with this control. Hallicrafters sx42 manuals manuals and user guides for hallicrafters sx 42.
I did remove this and saved the crystals for use in other receivers requiring single 455 khz. Hallicrafters was sloppy in documenting changes and the sx 42 is the worst of the group. The sx 43, unlike the sx 42, doesnt seem to be particularly well liked and, other than personal satisfaction, i wasnt thinking it was worthy of an intense restoration effort. The march, 1947 front cover of radio news magazine showed an sx 42 as it would have been used in the gatti expedition to south africa. Since this project has been getting long, i broke it into two pages. Dont be surprised if your sx 24 doesnt perfectly match the manual or schematic since that is a common feature of hallicrafters receivers. No doubt, it can be fixed and will fill my radio room with warm audio in due time. The sx 111 is a slightly cost reduced version of the sx 101 but retains its. My sx 25 came modified with a 3 position crystal controlled bfo. May 17, 2017 here is a slideshow showing the components ive replaced on a hallicrafters sx 42.
There are several service notes for curing specific problems, but here is the best part. Schematic and service manual schematic and service. Few people remember that the original fm broadcast band was assigned to 42 to 50 mhz known as the apex fm band. We always had cool, exotic radios and electronic gadgetry around the house. Hallicrafters sx25, hallicrafters sx43, hallicrafters sx43. Skip to content we are closely monitoring the covid19 situation and taking steps to protect our customers and employees. Calibrate the bandspread as outlined on page 1715 of ridefs volume 17, except that slug s33 should be used instead of trimmer c42, lt will be noticed that in this method the calibration of the lowfrequency end of the number 4 band has been neglected entirely. Hallicrafters s38b receiver operation service schematic alignment parts. The seller told me that she lights up but has no audio.
The sx 28 had provided prewar hams with a great receiver at a bargain price, while during wwii the sx 28 filled many different occupations from intercept to. Hallicrafters sx42 restoration see here for the matching r 42 speaker. Chicago, il and arlington, build 19611963, 8 pictures, 3 schematics, 4 tubes, united states of america. If you have a chance, check out this cleaning method and let me know if you have any thoughts on it. The other file is an enlarged sx42 schematic early version in eight, labeled, overlapping 8. Hallicrafters sx 42 manuals manuals and user guides for hallicrafters sx 42. View and download hallicrafters sx42 operating instructions manual online. Manuals always wanted please if you have a manual that is missing from this section.
We have 2 hallicrafters sx42 manuals available for free pdf download. Hallicrafters sx42 operating instructions manual manualslib. By july 1946, the new 1947 models were introduced with the sx 42 taking the flagship position that the sx 28 had occupied for the past six years. Hallicrafters sx42 operating instructions manual pdf. The manual is in highresolution, graphically enhanced and cleaned pdf format. This radio came from the era in which the boatanchor moniker was born. Free hallicrafters diagrams, schematics, service manuals. The sx42 was being hyped up in hallicrafters ads as the ultimate radio.
Antique radio forums view topic hallicrafters sx42 project. Sometimes, one can get to the rearward jamb nut, which spaces the switch or control, with a pair of angled needle nose pliers and loosen it enough to take the load off the front spline nut. Any issues with signup please use contact us button at bottom of any page. We have 2 hallicrafters sx 42 manuals available for free pdf download. Vintage 1940s hallicrafters sx42 radio receiver tube. This site is dedicated to all fans of vintage hallicrafters radios. It contains schematics, internal view of the radio, parts list and description this is a original and not copy. View and download hallicrafters sx 42 operating instructions manual online. Reproduction graphics hallicrafters decals page 1 radio. I already have an sx24, but this one is cosmetically superb for its age. There are two basic sx42 schematics, each with multiple revisions indicated by the letter at the end of the schematic number. Posted by schematic and service manual radio on friday, december 15, 2017 all documents are in english unless otherwise stated.
They also had an uncalibrated band with a mark for wwv at 10. It reproduces as well actually better than the original its scanned from. Chicago, il and arlington, build 19461948, 12 pictures, 28 schematics, 15 tubes, united states of america. Antique radio forums view topic hallicrafters sx 42. Equipped with three different versions of the schematic, i got to know the sx42s circuitry, especially its bandswitch, very well. The sx 28 is undoubtedly hallicrafters finest preworld war ii radio excluding hallicrafters special dual diversity dd1. Sx 43 compared with sx 42 the sx 43 is a lower cost and easiertolift version of the sx 42 with 11 tubes compared to 15 in the sx 42. The hallicrafters sx42 is a single conversion superheterodyne receiver with 15 tubes. Hallicrafters sx25, hallicrafters sx43, hallicrafters. Oct 08, 20 built in 1947, this was hallicrafters top of the line receiver and it covered 550 khz to 110 mhz am, cw and fm. Hallicrafters sx42 when joining hamradioforum you will get a confirmation email which you need to respond to.
Jamess hallicrafters sx42 repairrestoration project part ii. Equipped with three different versions of the schematic, i got to know the sx 42 s circuitry, especially its bandswitch, very well. The hallicrafters sp44 was pictured with the sx 42. Other hallicrafters receivers with this capability include the earlier sx 96 and sx 100 which are general coverage and the later sx.
R 42 r75 r80 external matching speaker reproducer external speaker reproducer external speaker reproducer. Finally, there is a nice big 11x17 foldout schematic. For maximum performance, the best possible antenna should be employed. Using 15 tubes, this radio covered the am frequencies in six bands from 540 khz, the bottom of the standard am broadcast band, to 110 mhz. Chicago, il and arlington, build 19641965, 1 pictures, 1 schematics, 11 tubes, united states of america, semiconductors. Buyer pays this is what you will need if ever to make repairs on your radio. October 4, 2007 incidentally, the 8 terrestrial globe on top of the hallicrafters model s40 was manufactured by the geo. Musical reproduction is wonderful, especially on the hallicrafters r 42 speaker. This is the long awaited hallicrafters sx 42, a truly great. For me, 20 is going to be the year of the hallicrafters sx 42. It had some rust, and one of the cogs had completely seized up. I have also added all of the pertinent pages from three volumes of the ryder manual. Owners manual and service bulletin for hallicrafters sx42. All the yellow capacitors you see are replacements for the original ugly wax paper caps.
The story and restoration of my hallicrafters sx42. The sx 71 receiver was manufactured by hallicrafters from 1949 to 1954. The hallicrafters sx42 was one of the first post ww2 general coverage receivers to incorporate not only fm reception but fm reception in the then new 88 to 108 mhz fm broadcast band. In the course of removing the repairmans temporary. Jamess hallicrafters sx 42 radio restoratonrepair project. It got worse with the sx 28 and culminated with the sx 42 and 62 as imo the worse consumer style communications radio of all time to rebuild.
Other hallicrafters receivers with this capability include the earlier sx 96 and sx 100 which are general coverage and the later sx 115 and sx 117. Hallicrafters s38b receiver operating and service instructions. The antenna impedance is not critical and excellent reception can be obtained from an antenna of from 50 to 600 ohm impedance. Hallicrafters diagrams, schematics and service manuals download for free. Tuning is imprecise though not much worse than that of my vaunted sp600 and its single conversion circuitry is prone to images.