1208-C: Difference between revisions
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(Created page with "Type '''1208-C Unit Oscillator (65-500 Mc)'''. ==Specifications== ==Links== ==Photos== <gallery> </gallery> Category:Oscillators Category:Unit Instruments") |
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{{GR Product | |||
|model=1208-C | |||
|class=oscillators | |||
|summary=Unit oscillator | |||
|image=GR 1208-C Front Close-up.jpg | |||
|caption=General Radio 1208-C Unit Oscillator | |||
|series= | |||
|introduced=1963 | |||
|discontinued=1965 | |||
|designers= | |||
|manuals= | |||
* [[Media:GRwiki 1208-C Unit Oscillator 1208-0100-I 03_1966.pdf|General Radio 1208-C Unit Oscillator Manual 1208-0100-I 1966]] | |||
{{Catalog History}} | |||
}} | |||
The {{Title|General Radio 1208-C Unit Oscillator}} was introduced in {{Catalog R}} and remained available through {{Catalog S}}. | |||
The Type 1208-C is a general purpose frequency source covering 65 to 500 MHz. Direct amplitude modulation at audio frequencies is provided by a front panel phone jack and with an accessory crystal-diode modulator [[1000-P6]] or [[1000-P7]] balanced modulator, frequencies from 0 to 5 MHz can be used to provide amplitude modulation. The 1208-C uses a 2C43 "lighthouse" tube in a Colpitts type oscillator circuit. As part of the unit instrument group it requires an external power supply, the simplest being the [[1203-B]]. Differences between the previous [[1208-B]] are minimal, the panel is redesigned for optional rack mounting. | |||
==Specifications== | ==Specifications== | ||
* '''Frequency Range:''' 65 to 500 MHz. | |||
* '''Frequency Calibration Accuracy:''' +2%. | |||
* '''Warmup Frequency Drift (Typical):''' 0.5%. | |||
* '''Output Power:''' 170 mW to 240 mW below 250 MHz. 60 mW to 80 mW above 250 MHz; into 50 Ω, power supply dependent. | |||
==Links== | ==Links== | ||
* [[Media:GR Exp Unit Oscillators 06_1965.pdf|Experimenter describing Unit Oscillators June 1965]] | |||
* [[Media:GR Exp Unit Oscillators 08_1963.pdf|Experimenter describing Unit Oscillators August 1963]] | |||
* [[Media:GE 2C43 Triode Datasheet 12_1961.pdf |GE 2C43 Lighthouse Triode Datasheet]] | |||
* [[Media:RCA 2C43 Triode Datasheet.pdf|RCA 2C43 Lighthouse Triode Datasheet]] | |||
* Compatible with [[908-P1|908-P1 Synchronous Dial Drive]] and [[908-R96|908-R96 Synchronous Dial Drive]] | |||
==Photos== | ==Photos== | ||
<gallery> | <gallery> | ||
GR 1208-C Front.jpg | |||
GR 1208-C Left.jpg | |||
GR 1208-C Rear.jpg | |||
GR 1208-C Right.jpg | |||
GR 1208-C Attenuator.jpg | |||
GR 1208-C Attenuator A.jpg | |||
GR 1208-C 2C43 Lighthouse Tube.jpg|2C43 Lighthouse Tube | |||
</gallery> | </gallery> | ||
[[Category:Oscillators]] | [[Category:Oscillators]] | ||
[[Category:Unit Instruments]] | [[Category:Unit Instruments]] | ||
Latest revision as of 19:25, 8 May 2024
The General Radio 1208-C Unit Oscillator was introduced in Catalog R (1963) and remained available through Catalog S (1965).
The Type 1208-C is a general purpose frequency source covering 65 to 500 MHz. Direct amplitude modulation at audio frequencies is provided by a front panel phone jack and with an accessory crystal-diode modulator 1000-P6 or 1000-P7 balanced modulator, frequencies from 0 to 5 MHz can be used to provide amplitude modulation. The 1208-C uses a 2C43 "lighthouse" tube in a Colpitts type oscillator circuit. As part of the unit instrument group it requires an external power supply, the simplest being the 1203-B. Differences between the previous 1208-B are minimal, the panel is redesigned for optional rack mounting.
Specifications
- Frequency Range: 65 to 500 MHz.
- Frequency Calibration Accuracy: +2%.
- Warmup Frequency Drift (Typical): 0.5%.
- Output Power: 170 mW to 240 mW below 250 MHz. 60 mW to 80 mW above 250 MHz; into 50 Ω, power supply dependent.
Links
- Experimenter describing Unit Oscillators June 1965
- Experimenter describing Unit Oscillators August 1963
- GE 2C43 Lighthouse Triode Datasheet
- RCA 2C43 Lighthouse Triode Datasheet
- Compatible with 908-P1 Synchronous Dial Drive and 908-R96 Synchronous Dial Drive
Photos
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2C43 Lighthouse Tube
