
370 UHF AND MICROWAVE RECEIVERS
tuned. AGC thresholds of 0.7 to 2.5/~V are common on decent receivers, with the
better receivers being in the 0.7- to 1-/~V range.
Another AGC specification sometimes seen deals with the speed of the AGC.
Although sometimes specified in milliseconds, it is also frequently specified in
subjecti've terms like fast and slow. This specification refers to how fast the AGC re-
sponds to changes in signal strength. If it is set too fast, then rapidly keyed signals
(for example, CW) or noise transients will cause unnerving large shifts in receiver
gain. If it is set too slow, then the receiver might as well ...