Rare AN/GRR-2 1944 Hallicrafters SX-28A Super SKYRIDER s/n HA-2529 VG & Works For Sale

Rare AN/GRR-2 1944 Hallicrafters SX-28A Super SKYRIDER  s/n HA-2529 VG & Works
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Rare AN/GRR-2 1944 Hallicrafters SX-28A Super SKYRIDER s/n HA-2529 VG & Works:
$163.50

A very rare variation of the classic WW II era Hallicrafters SX-28A ... This is the AN/GRR-2 version, serial number HA-2529 and MFP dated May 17, 1944. ... Produced very early in the run of SX-28A receivers. Below info from the radioblvd.com website:\"These were built with heavy-duty parts and other changes that were certainly at the request of the Navy and the Signal Corps. These heavy-duty SX-28 receivers have a General Transformer Company power transformer that is potted, Korite dipped filter choke and audio output transformer and also feature the return to the gear-driven bandspread tuning. These \"special\" receivers were designated as AN/GRR-2 and were specifically built for military use. Though most of the SX-28A receivers built from 1944-45 were in the standard configuration with table top cabinet, it appears that only one production run was made for the AN/GRR-2 receivers since all known examples were built in May, 1944. The AN/GRR-2 receivers were quite different than the standard SX-28A (and the earlier heavy-duty SX-28 models) and featured rugged construction with fungus proofing, rotary switches that were wax impregnated and the IF transformers that were vacuum and wax impregnated. Like the earlier \"heavy-duty\" SX-28s, the AN/GRR-2 power transformer was the same potted unit made by General Transformer Company and the filter choke and audio output transformer were dipped in Korite (a black tar-like moisture proofing.) Also included was the heavy-duty gear-driven bandspread dial (that had been used in the early pre-war SX-28s]. All AN/GRR-2 receivers are MFP treated and are exclusively in the rack mount configuration but its dust cover design allows the receiver to be used as a table top unit also. The AN/GRR-2 had its own US Army Signal Corps manual, the TM-11-874 which is much more detailed than the standard Hallicrafters\' SX-28A manual

This example is a mid 1944 production [s/n HA-2529] and it\'s in generally very good, original condition. Front panel is decent with some light surface rust. Replacement tuning and bandswitch knobs but the other knobs are all original. It\'s nominally working but seriously in need of electronic restoration. I powered it up slowly using a Variac ... it works OK on the broadcast band w/selectivity in the broad position. Received several strong locals ... works but very weak reception on the short wave bands. Appears to have all original components inside so it will require a complete electrical restoration. More info for SX-28 fans and specific info on the AN/GRR-2 varient: http://www.radioblvd.com/SX28Notes.html

Problems noted: The antenna insulator plate is cracked .. the S meter needle barely deflects when a signal is received.

The receiver is housed in the original black painted steel rack cover/cabinet in good condition ... the finish is intact but would benifit from a respray. There are no reteining screws that held the cabinet to the chassis.The set retains the original bottom panel. Working as noted above ... however .. Please note that this is an original condition 70 year old receiver that will need electronic restoration before extended use. Tube type radios are best enjoyed by those with the knowledge and equipment to work on them and a healthy respect for the lethal voltages in use.

This rare and impressive set measures approx 20.5\" X 10\" X 16\" deep and very well packed shipping weight will be approx 80 pounds from zip code 24012. I will be at the Spring Kutztown, PA Radio Meet May 13/14 and would be glad to deliver this set to the meet for no charge.


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