superheterodyne

Thus the said stages are more reliable in superheterodyne.

On the other hand, in superheterodyne only the output stages need to be retuned.

That is not the case with the superheterodyne.

Sometimes a receiver employing this technology is called a superheterodyne or superhet.

Compared to the technically superior superheterodyne the Neutrodyne was cheaper to build.

The invention of superheterodyne is usually attributed to Edwin Armstrong.

The WR-2902i is a triple conversion superheterodyne receiver.

Evidently an experiment in a tactical vehicle radio, it was the first Army set to utilize the Superheterodyne.

The homodyne was developed in 1932 by a team of British scientists searching for a design to surpass the superheterodyne (two stage conversion model).

However unlike the superheterodyne, the frequency of the local oscillator is not offset from but right at the received signal's frequency.

"Super" was derived from superheterodyne.

Crystal oscillator superheterodyne receivers with better selectivity and stability made control equipment more capable and at lower cost.

See Superheterodyne receiver.

This avoids the complexity of the superheterodyne's two (or more) frequency conversions, IF stage(s), and image rejection issues.

Who Invented the Superheterodyne?

Dynamic calibration is needed when there are long waveguide runs between the antenna and first down converter (see Superheterodyne receiver).

Prior to superheterodyne, broadcast receivers had to be carefully tuned to each station in incremental steps, and good on-center tuning called for several attempts.

First "Spidola" was a ten-transistor, seven-band superheterodyne.

In more complicated transmitters which are called superheterodyne, the information signal modulates an intermediate frequency (IF) signal.

Designed as a double-conversion superheterodyne with a direct-conversion demodulator, it offers adjustable IF bandwidth and is remarkably simple to adjust.

However multitube receivers like the TRF and superheterodyne were also made with some of their amplifier stages "reflexed".

(With A.L. Green) Superheterodyne tracking charts.

This was compounded by the expiration of patents on the superheterodyne circuit-which led directly to the proliferation of inexpensive All American Five radio designs.

After the war, in 1920, Armstrong sold the patent for the superheterodyne to Westinghouse, who subsequently sold it to RCA.

Frequency converter may also refer to a much-lower-powered circuit that converts radio frequency signals at one frequency to another frequency, especially in a Superheterodyne receiver.