1215-C: Difference between revisions

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The {{Title|General Radio 1215-C Unit Oscillator}} was introduced in {{Catalog R}} and remained available through {{Catalog 1973}}.  
The {{Title|General Radio 1215-C Unit Oscillator}} was introduced in {{Catalog R}} and remained available through {{Catalog 1973}}.  


The Type 1208-C is a general purpose frequency source covering 50 to 250 MHz. It finds use as a generator for bridges, admittance and impedance meters. Direct amplitude modulation at audio frequencies is provided by a front panel phone jack and with an accessory crystal-diode modulator [[1000-P6]], frequencies from 0 to 5 MHz can be used to provide amplitude modulation. As a unit oscillator it requires an external power supply, the types [[1203-B]] is recommended.
The Type 1208-C is a general-purpose frequency source covering 50 to 250 MHz. It finds use as a generator for bridges, admittance meters, and impedance meters.  
 
Direct amplitude modulation at audio frequencies is provided by a front panel phone jack
With an accessory [[1000-P6|1000-P6 Crystal Diode Modulator]], frequencies from 0 to 5 MHz can be used to provide amplitude modulation.  
 
As a unit oscillator, the 1215-C requires an external power supply, type [[1203-B]] is recommended.


==Specifications==
==Specifications==
   
   
* '''Frequency Range:''' 50 to 250 MHz.
* '''Frequency Range:''' 50 to 250 MHz
* '''Calibration Accuracy:''' ±1%.
* '''Calibration Accuracy:''' ±1%
* '''Warmup Frequency Drift:''' 0.4% typical.
* '''Warmup Frequency Drift:''' 0.4% typical
* '''Output:''' 100 mW into 50 ohms with Type 1269-A power supply.
* '''Output:''' 100 mW into 50 Ω with Type 1269-A power supply


==Links==
==Links==


* [[Media:GR Exp Unit Oscillators 08_1963.pdf|Experimenter describing Unit Oscillators]]
* [[Media:GR Exp Unit Oscillators 08_1963.pdf|Experimenter August 1963 describing Unit Oscillators]]
* [[Media:2367681 Patent Butterfly tuned circuit.pdf|Patent for the Butterfly Tuning Circuit]]
* [[Media:2367681 Patent Butterfly tuned circuit.pdf|Patent for the Butterfly Tuning Circuit]]
* Compatible with [[908-P1|908-P1 Synchronous Dial Drive]] and [[908-R96|908-R96 Synchronous Dial Drive]]


==Photos==
==Photos==

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