1211-B: Difference between revisions

1211-B (view source)

Revision as of 06:23, 7 July 2024

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-Type '''1211-B Unit Oscillator (.05-50 Mc)'''.
+{{GR Product
+|model=1211-B
+|codes=ATLAS
+|class=oscillators
+|summary=unit oscillator
+|image=GR 1211-B Close-Up
+|caption=General Radio 1211-B Unit Oscillator
+|series=1211
+|introduced=1956
+|discontinued=1961
+|designers=
+|manuals=
+* [[Media:GR 1211-B Unit Oscillator 802-D 03_1958.pdf|General Radio 1211-B Unit Oscillator Manual 802-D 03_1958]]
+}}
+The '''General Radio 1211-B HF Unit Oscillator''' introduced in {{Catalog O}} and remained available through {{Catalog Q}}.
+The 1211-B is an updated version of the original [[1211-A]] unit oscillator. It features both variable capacitance and inductance for frequency control in two bands. Amplitude modulation is possible via a front panel phone jack using the Type [[1214-A]] oscillator.  The Type 1211-B like most "Unit" instruments requires an external power supply, [[1203-B]] is recommended.  The Type 1211-B is used as generator for the Type [[916-AL]], [[1601-A]] and [[1606-A]] bridges.
 ==Specifications==
+* '''Frequency Range:''' 0.5 to 50 MHz in two ranges
+* '''Frequency Calibration Accuracy:''' ±2 percent at no load
+* '''Output Power:''' At least 200 milliwatts into 50 Ω load at any frequency. Over the 0.5 to 5 MHz range, average output is approximately 2 watts
 ==Links==
-* [[Media:GR 1211-B Unit Oscillator 802-D 03_1958.pdf|General Radio 1211-B Unit Oscillator Manual 802-D 03_1958]]
+* [[Media:GR Exp 1211-A 09_1953.pdf|Experimenter September 1953 describing Type 1211-B]]
 ==Photos==
 <gallery>
+GR 1211-B Front.jpg
+GR 1211-B Left Side.jpg
+GR 1211-B Right Side.jpg
+GR 1211-B Rear.jpg
+GR 1211-B Inside Left A.jpg
+GR 1211-B Inside Rear.jpg
+GR 1211-B Inside Right.jpg
+GR 1211-B Inside Right A.jpg
+GR 1211-B Inside Shield.jpg
 </gallery>
 [[Category:Oscillators]]
 [[Category:Unit Instruments]]