EB5AGV's SP-600 Model Information

Keep them glowing!

These are very interesting tables compiled and copyrighted by Les Locklear. Please, e-mail any correction or addition.


SP-600 J-Model Information

JX Model Date added
(according to Hammarlund files)
Comments
1-9 9-19-51
10,11 11-8-51
12 11-9-51
13 11-26-51
14 3-12-52
14 4-23-52 Name plate to add R-274A/FRR
14 9-29-52 'A' was R-542/FRR
15-17 6-17-52
18 6-26-52
19,20 8-27-52
21-26 2-13-53
24 10-9-57 Special supplied to NAVSHIPS 91661, R-274B/FRR
27 3-13-53
28 10-5-53
28 3-8-54 Name plate added
29 3-12-54
30-33 12-28-54
34,35 7-7-56
36 10-3-57
37,38 3-28-61
39 7-21-61 Made for FAA contract FA-2338 same as 21, except has 6 position freq control instead of 7

SP-600 Sequential Model Information

Model Designation Comments
1 JX-1
2 JLX-2
3 J-3
4 J-4 R-320A/FRR SIGNAL CORPS 19474-PHILA-50-06
5 J-5 R-483/FRR SIGNAL CORPS 21478-PHILA-50
6 JX-6 R-274B/FRR NAVY NOBSR-52039
7 JX-7
8 JX-8
9 JL-9
10 JX-10
11 J-11 MADE TO COMPLETE NAVY ORDER ECN-1156
12 JX-12 R-274A/FRR SIGNAL CORPS 3376-PHILA-52
13 J-13 SAME AS 5, NAME PLATE CONTRACT 16838-PHILA-51, SERIAL NUMBERED 52 TO 67 INCLUSIVE
14 JX-14 R-274C/FRR SIGNAL CORPS 1689-PHILA-51-01
15 JLX-15
16 JL-16
17 JX-17 AIR MATERIAL COMMAND
18 JX-18
19 J-19
20 J-20 R-483A/FRR SIGNAL CORPS 3479-PHILA-52-06
21 JX-21
22 J-22
23 JLX-23
24 JL-24
25 J-25
26 JX-26 R-274C/FRR 3376-PHILA-52
27 JLX-27
28 JX-28 R-620/FRR SIGNAL CORPS 25693-PH-53-61 on contract DA-36-039-SC-49453
29 JX-29 MADE FOR CONTRACT XG-1178
30 JX-30 DIVERSITY
31 VLF-31
32 JX-32 BLACK WRINKLE FINISH ON FRONT PANEL, FIRST MADE FOR MACKAY RADIO THEIR ORDER # M-41666
33 JLX-33 SAME AS 17, EXCEPT FREQ: .1 TO .4 and 1.35 TO 29.7
34 JL-34 FIRST MADE FOR CIA ORDER XG-1765, FREQ: .1 TO .2 and .54 TO 14.8
35 JX-35 R-274B/FRR ORDER NOBSR-71369, USES 0-10 KC BFO
36
37 JX-37
38 VLF-38 SAME AS VLF-31 EXCEPT 25 CYCLE
39 JX-39 FAA CONTRACT FA-2338

Go back to SP-600 Page