Hammarlund SP-600


The Hammarlund SP-600 was produced with many variants mostly from 1951-1955, but later versions were manufactured and available through the 70's. There were approximately 40 versions with various contracts to satisfy specific needs for service. This brief description (with a comprehensive manual for download), accurately describes the "JX-21" model. This particular unit (above pictured) was delivered to the David Sarnoff "RCA Center" in 1957 with a paint scheme that matched other RCA equipment at the time.


From the Air Force Technical Manual- TO 31R2-4-101-2 :

Tube Compliment:

- (V1) 1st RF - 5749/6BA6W
- (V2) 2nd RF - 5749/6BA6W
- (V3) FFO - 6AC7
- (V4) VFO - 6C4
- (V5) 1st Mixer - 6BE6
- (V6) 2nd Mixer - 6BE6
- (V7) Gate - 5749/6BA6W
- (V8) 3.5 MC Crystal Oscillator - 6C4
- (V9) 1st IF - 5749/6BA6W
- (V10) 2nd IF - 5749/6BA6W
- (V11) Driver - 5749/6BA6W
- (V12) Buffer - 5749/6BA6W
- (V13) BFO - 6C4
- (V14) Detector/AVC - 5726/6AL5W/6097
- (V15A) Limiter 1/2 of - 5726/6AL5W/6097
- (V15B) Meter Rectifier 1/2 of - 5726/6AL5W/6097
- (V16A) IF Output 1/2 of - 12AU7
- (V16B) AF Amplifier 1/2 of - 12AU7
- (V17) Audio Output Amplifier - 6V6GT
- (V18) Voltage Regulator - 0A2
- (V19) B- Rectifier - 5R4GY
- (V20) C- Rectifier - 5726/6AL5W/609

 

 


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