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874-MR: Difference between revisions
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{{Catalog History}} | {{Catalog History}} | ||
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The {{Title|General Radio 874-MR Mixer Rectifier}} was introduced in {{Catalog M}} and remained available through {{Catalog 1973}}. | The {{Title|General Radio 874-MR Mixer Rectifier}} was introduced in {{Catalog M}} and remained available through {{Catalog 1973}}, after which only the [[874-MRL]] version with locking connectors remained available. | ||
The Type 874-MR is a device used to mix two signals, the input signal and a local oscillator, to produce an intermediate frequency. The range of both input and local oscillator is 40 to 5000 MHz, and the | The Type 874-MR is a device used to mix two signals, the input signal and a local oscillator, to produce an intermediate frequency. The range of both input and local oscillator is 40 to 5000 MHz, and the intermediate frequency range is up to 30 MHz. | ||
Tge 874-MR enables UHF signals to be monitored conveniently by radio receivers, wide-band amplifiers or null detectors operating at the IF frequency. | |||
The output signal from the 874-MR passes through a 1N21 diode followed by a low-pass pi filter. | |||
Maximum input from the local oscillator must be kept below 2 V to prevent damage to the 1N21 rectifier. | |||
==Specifications== | ==Specifications== | ||
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* '''Maximum Crystal Current:''' 5 mA | * '''Maximum Crystal Current:''' 5 mA | ||
* '''Maximum Input from Local Oscillator:''' 2 V | * '''Maximum Input from Local Oscillator:''' 2 V | ||
* '''Cut-Off Frequency of Output | * '''Cut-Off Frequency of Output Filter:''' 40 MHz | ||
==Links== | ==Links== | ||