Marshall Amplification Field 4000, Owner'S Manual

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Page 8
Field Marshall Tracking Receiver
7
The
Range Switch
is prov ided to be
able to estimate the distance to the trans-
mitter, a process called ranging. When
y ou are driving in y our v ehicle toward the
transmitter f rom a distance, the key question often
is, “when should I get out and start walking?” A
common mistake is getting out on foot too soon,
thinking you are near enough to walk. The
Medium
setting helps you avoid this mistake.
When the signal can be heard on Medium, you’re
close enough to get out and search on foot.
Note: Other receiv ers have powerf ul Medium settings which tend to fool
y ou into thinking a transmitter is closer than it is. This high sensitivity is
good on Far, but on Medium, this is not a virtue. The Field Marshall is
intentionally designed with a weaker, and more precise Medium range.
The
Near
range setting is not
used in ordinary tracking. In
extreme situations it allows
y ou to accurately pinpoint a
transmitter which is very near
but hidden f rom sight.
The
Far
range setting is for use in all situations when the signal is too
weak to be heard on Medium.
Comparing the range of two receiv ers set on
Medium is like racing two
cars in only second gear — winning means nothing because the gear ratios
are arbitrary. Only compare perf ormance of receivers with the ranges of
both receivers set to
Far . To have a race, put them both in high gear.
8
As with any receiver, y ou want to avoid
overdriving it. This happens when you
turn up the
Volume
too f ar. Overdriv ing
doesn’t hurt the digital Field Marshall, but
makes it so y ou get the same signal in
ev ery direction, (sometimes the signal may
actually decrease in the direction of the
transmitter.)
Solution: If the Receiv er has lost directionality simply turn down the
Volume
, or switch to
Medium
or
Near
.
G
E
T
T
I
N
G
S
T
A
R
T
E
D
Setting Action
Far Stay in car
Medium Start Walking
Near Look around you