Marshall Amplification Field Marshall 100 Owner's Manual page 4

Field Marshall Tracking Receiver
Introduction, cont.
"The Quiet One" comes through with a more effective and pleasant
tracking experience.
The Quiet One
When you turn on your
quietness immediately. You usually won't turn it up as loud as
your old receiver because you don't have to. While other
receivers are producing lots of noise, the new Field Marshall is
producing more signal.
How does the digital Field Marshall's lower nois e translate into better range? Well,
the ans wer is that with all recei vers it's the noise floor of the rec eiver that ultimatel y
limits its range. Any recei ver c an amplify a weak signal from a faraway transmitter.
The pr oblem is that when you turn up the volume to amplify that weak signal the
noise j ust gets l ouder as well and c ontinues to overpower the signal* . That's why
the differ ence between a medi ocre rec eiver and the bes t recei ver is sophisticated
filtering and expensi ve el ectronic devices that mini mize noise. It turns out that's the
only way to incr ease the range of a rec ei ver. Other recei vers si mpl y make a l oud
sound, but loudness al one means nothi ng in ter ms of range.
* T he technical term for the sensitivity of a receiver, or its ability to discern weak signals, is
the signal-to-noise ratio. A higher signal-to-noise ratio translates directly into better sensi-
tivity and range, regardless of how loud the actual output of the receiver is.
Page 4
™
Digital Field Marshall, you'll notice the