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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Here’s a link to the article: The Hammarlund Super-Pro was never very popular in ham shacks due to its high selling price but today its great audio and continuously variable IF bandwidth make it ideal for vintage AM operation.

Hallicrafters SX-28 Service Instructions Manual

Use the WD liberally it’s cheap and use a small long handle paint brush to brush off the grease and dirt. Of course, I advocate that, whenever possible, only cleaning of the original finishes should be performed. The Plug-in gallicrafters assemblies were part of what gave the HRO its low-noise figure but they are a hassle to store when not in use and changing bands is a pain.

Sensitivity, selectivity and stability are quite good considering that the design is over 60 years old. Fuse and fuse holder added – initially mounted atop chassis adjacent to 5Z3, later installed on back chassis apron.

The receiver’s ultimate design was the result of the analysis of more than requested reports, including input from government engineers. In most cases the back of the panel will provide the best condition halicrafters for the correct color halljcrafters.


After removing the gearbox as a unit, flush all of the gears with a constant stream of WD from a spray can. Possibly changed to conform with JAN values. Usually were special order receivers with a dual primary power transformer for operation on either vac or vac.


Moderate darkening of the dial. Since this is an approximation and is taking into account intermixed stock, the number maunal receivers is rounded off to about units. Today, hundreds and hundreds of SX receivers have been restored and are in use in Vintage Ham Shacks around the country still providing great performance with incredible, bass-rich audio. Photo right shows the underside of SXA SN HA showing the construction of the new Hi-Q Micro-set coils and the coil chassis that comprise the shielding when the front end is completely assembled.

Although several other pre-war communications receivers have audio output stages that can rival the Sd-28, there is a certain appeal to listening to a receiver with such dramatic presence as sx-8 SX, especially when used with the R speaker.

The Lamb Noise Silencer was a great circuit and it was the only pre-war tuned noise blanker used in any receiver it was also available in the RMELS-1 receiver. Granted that modern signals, like SSB, weren’t part of that original owner’s experience but the SX is perfectly capable of receiving SSB signals without modifications.

Hallicrafters SX-28

Sometimes, if the dirt and grime is stubborn, I’ll use a soft brass brush like a suede brush to work the dirt out of the convolutions. The Lamb Noise Silencer is a “tuned noise blanker” that must be aligned to the kc IF to operate correctly.

This sx-2 quality effort resulted in dial readout accuracy of 0. HA has its original heavy-duty dust cover installed. The front panels are “dark” gray-blue on very early SXs.


The coax from the mixer output to the accessory plug for operation of a panadaptor. Since there is no tone control on the Series Super-Pro other than cutting the highs by reducing bandwidth, the better the speaker quality is, the better the audio will sound. Earliest SXA serial number encountered: Also included was the heavy-duty gear-driven bandspread dial that had been used in the early pre-war SXs.

These zx-28 have all of the SXA indicator parts louvered condenser cover is screw mounted though but the coils are the old SX style and the RF box is the old SX style.

During WWII, Hallicrafters’ output again increased significantly, however the nature of the production changed from amateur receivers and transmitters to equipment required by the military.

Hallicrafters SX

These types of cleaners dissolve the ink almost immediately. Many of the manuals have thick covers rather than standard paper more variations!

At about the same time, the magnet cover was eliminated from the speaker hallivrafters. The 10″ Jensen speaker has a ohm to 8 ohm transformer to match the speaker to the typical Hallicrafters’ audio output impedance. Of course the SX drifts, The FCC diversity set-ups appear to use two SX receivers, one with the S-meter removed and the other with the bandspread removed.

The Second RF and Mixer coil chassis nallicrafters two fiber boards with three coils mounted on each board. The typical HRO Sr.