Hallicrafters SX Serial Number H Here is the SX, as received. Chuck McGregor drew the following schematic, showing where the cut was, and . View and Download Hallicrafters SXA technical manual online. SXA Radio pdf manual download. View and Download Hallicrafters SX service instructions manual online. The Model SX Super Skyrider Receiver. SX Receiver pdf manual.
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HALLICRAFTERS SX SERVICE INSTRUCTIONS MANUAL Pdf Download.
Be sure to use the same number of ball bearings in each cup that were removed. Titled as “Service Bulletin from Hallicrafters – Bulletin ,” it consists of four pages printed on two sheets of yellow paper. Next is the bandspread which is only calibrated in a halkicrafters and only operates on the top mqnual bands. These receivers are issued standard Hallicrafters’ serial numbers carried on the tag mounted to the rear chassis of the receiver. Since all serial numbers were assigned sequentially, it doesn’t have to be an SX – ANY model Hallicrafters’ tag provides important build-date information.
Sometimes it can be found listed as “Sodium-based Grease.
At about the same time, the magnet cover was eliminated from the speaker frame. However, in a post-war advertisement, Hallicrafters stated that over 50, SX and SXA receivers had been produced.
Hallicrafters SX-28-A Technical Manual
Fortunately, it was “dead-stock” with no modifications and the receiver had only one serious problem. Accessories and smaller items that were serialized sometimes manjal an “H” followed by a four digit number.
The audio output transformer is usually stamped on top with a numeral month and year, e.
On the down-side, the very early SXs have a slightly less effective version of the Lamb Noise Silencer and an Antenna Hhallicrafters that only functions on the top four bands. Condenser box cover modified by enlarging the tube cover panel for better access to tubes seen on SXs SN H, H The receiver will drift until it has thermally stabilized which takes about 30 to 60 minutes.
Floor Model Radios Consoles to It is also interesting that only serial numbers were issued in a 16 day period indicating that production that used the “HA” prefix was fairly low at this time. It is known that some of the very late SXs were fitted with webbed knobs. It has great a crystal filter for selectivity, which works wonders on either AM or CW, however few amateurs ever used it enough to appreciate it.
HALLICRAFTERS SXA TECHNICAL MANUAL Pdf Download.
By using the total quantity of serial numbers issued between August and March hallictafters, one has hqllicrafters 40, numbers. By estimating that Hallicrafters assigned between and serial numbers per month at this time, the SX production should start approximately with serial number H, Since these serial number assignments all occurred during the “Christmas Season rush,” production would have ss-28 at its highest volume for the year, probably at least units per week especially of the lower cost receivers that made good Christmas presents.
It’s possible that Hallicrafters might have repainted a panel for a special request but it seems like it would have been a difficult to accomplish operation since Hallicrafters production building was essentially as an assembly operation using purchased parts. The mid-production manuals are sometimes dated “” but many manuals at this time weren’t dated at all.
The wood used is a soft lumber core that has a soft wood veneer.
The uppermost photo shows an excellent original dial with no darkening. Front panel paint changed to medium black – end oflatest SN seen with gray panel, H and earliest SN seen with black panel, H – Only 26 serial numbers separate this particular change, dating it to Dec. It hallirafters look like new. The typical HRO Sr.
The manual’s alignment instructions are tedious and never changed after throughout the SX and SXA production. This would make the actual time interval between the assignments of HA and HA about two weeks. Connector insulators on rear chassis changed from brown R type material to black bakelite by SN H Bracket added to rear of Selectivity switch and screwed to chassis to strengthen mounting Fiber shaft used for Antenna Trim, eliminates the copper grounding springs used mmanual the earlier metal shafts R25 and R26 K each replaced with a single resistor, R25 K Shielded cables no longer have the shields soldered to the RF box corner – SN H Sleeved shielded cables to SW-5 that were part of the redesigned ANL and were routed above the wiring harness are now installed next to the chassis and with the wiring harness.
Most reproduction manuals that are available are broken down into “standard” early versionmid-production version no number and SXA April 10, This SXA is owned by: I use artist’s acrylic paint to mix an exact match for touch-ups.
Silver panels hallicgafters up from time to time but these seem to be panels with the original paint stripped off.