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CV1863, MIL SPEC 5Z4G, STC, RADAR ELECTRONIC EQUIPMENT, ORANGE BASE PRINT, RED ENVELOPE CARTOUCHE, SEPTEMBER 1956 MANUFACTURE, NOS
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CV1863, MIL SPEC 5Z4G, STC, RADAR ELECTRONIC EQUIPMENT, ORANGE BASE PRINT, RED ENVELOPE CARTOUCHE, SEPTEMBER 1956 MANUFACTURE, NOS CV1863, MIL SPEC 5Z4G, STC, RADAR ELECTRONIC EQUIPMENT, ORANGE BASE PRINT, RED ENVELOPE CARTOUCHE, SEPTEMBER 1956 MANUFACTURE, NOS CV1863, MIL SPEC 5Z4G, STC, RADAR ELECTRONIC EQUIPMENT, ORANGE BASE PRINT, RED ENVELOPE CARTOUCHE, SEPTEMBER 1956 MANUFACTURE, NOS CV1863, MIL SPEC 5Z4G, STC, RADAR ELECTRONIC EQUIPMENT, ORANGE BASE PRINT, RED ENVELOPE CARTOUCHE, SEPTEMBER 1956 MANUFACTURE, NOS

CV1863, MIL SPEC 5Z4G, STC, RADAR ELECTRONIC EQUIPMENT, ORANGE BASE PRINT, RED ENVELOPE CARTOUCHE, SEPTEMBER 1956 MANUFACTURE, NOS

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CV1863, MIL SPEC 5Z4G, STC, RADAR ELECTRONIC EQUIPMENT, ORANGE BASE  PRINT, RED ENVELOPE CARTOUCHE, SEPTEMBER 1956 MANUFACTURE, NOS

A very scarce item this, a red print 5Z4G manufactured by a small STC subsidiary for the Air Ministry as evidenced by the range 10E coding seen on the base.  

However, more importantly it tests as EXCELLENT using my Avo VCM163 valve tester. This exquisite device has a black low loss micanol base which is tight to the envelope and the pins are clean, straight and uncorroded. 

Device specification 60mA delivery for both diode sections. So you can see we have 100% emission from this venerable beauty. 

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