Radio Restoration Needs
Below is a list of vacuum tubes used in restored operational equipment aboard USS Cobia that are needed as spares. If you have any of these tubes please consider donating them to USS Cobia to support the ongoing restoration of the radio and radar equipment. Used tubes but tested good are welcome!
Please send an email to museum@wisconsinmaritime.org with "vacuum tubes" in the subject line.
0C3, (VR105-30)
0D3, (VR150-30)
1N21(*) (Solid state mixer diode - need any version but particularly the "F")
2A3
2J50
2K25
2X2
3B24
4PR60
5D21 (Urgently needed)
5FP7
5HP1
5R4
5U4
5Y3
5Z3
6A7
6AC7
6AG7
6AK5
6AQ5
6C6 (Urgently needed)
6D6
6E5 (Urgently needed)
6H6
6J5
6K6
6K7
6L6
6SA7
6SC7 (Urgently needed)
6SJ7
6SK7
6SN7
6SQ7
6V6
6X4
6X5
6Z4
12A6
12AU7
12H6
12SA7
12SG7
12SJ7
12SK7
12SQ7
41
47 Pilot Lamp
76
77
80
84
322 Pilot Lamp
703-A
705A
706AY,BY,CY
717A
721A
723A/B
724B
726B (Urgently needed)
803
807
836
860
874
876
955
991 (NE-16)
1625
9005
38160
38205
38250
38803
Vacuum tubes used in restored operational equipment aboard USS Cobia.
1MC Alarm & Announcement System:
6C6
76
6D6
6L6
84
6Z4
5Z3
6SC7
6X5
SJ-1 Radar:
1N21(*)
2X2
5D21
4PR60
5FP7
5HP1
705A
3B24
706AY,BY,CY
717A
721A
726B
836
5U4
6AC7
6AG7
6H6
6L6
6SN7
6SQ7
6V6
6X5
807
991
0C3
VR105-30
38205
0D3
VR150-30
38250
322 Pilot Lamp
47 Pilot Lamp
ST Radar:
6SN7
6V6
6AK5
6H6
5D21
705A
723A/B
724B
2K25
2J50
RAK and RAL receivers:
6D6
41
5Z3
874
876
80
RBO receivers:
6K7
6J5
6SA7
6SK7
6H6
6J5
6SJ7
6K6
6E5
6X5
APR-1 Receiver:
9005
955
703-A
6E5
6AC7
6H6
6AG7
5Y3
TBL Transmitter:
860
38160
803
38803
2A3
TCS-12 Transmitter/Receiver:
12A6
1625
12SK7
12SA7
12SQ7
5R4
5U4
6X5
RBS-2 receiver:
12SG7
12H6
12SJ7
12SK7
12A6
5U4
6V6
LM-12 Frequency Meter:
76
77
6A7
991
AIM-215 Amplifier
6AQ5
6X4
12AU7
