39
Scanning
The K3's scanning features let the K3 tune any band
segment continuously, with or without the receiver
muted (
Some bands may be excluded from scanning for
regulatory reasons.)
Scanning can be used to monitor
any portion of a band, from a 1-2 kHz range where
a station or net is expected to appear, to an entire
band.
Somet
i
mes
a
band
t
ha
t
a
ppear
s
“dead”
ma
y
ac
t
ual
l
y
have several stations present. You can use scanning
to find these stations for you while accomplishing
other tasks.
Scanning while muted allows the K3 to ignore
stable carriers (key-down signals with no
modulation), unmuting only when "interesting"
signals are found. Scanning with the receiver "live"
(not muted) is especially useful when listening for
weak signals on very quiet bands.
Scanning Setup
To use scanning, you first need to store the desired
t
uni
ng
r
ange
i
n
a
memor
y.
Af
t
e
r
t
ha
t
,
you’
l
l
be
abl
e
to simply recall the memory, then start scanning.
You can set up scanning ranges for various bands,
modes, etc.
To set up a scanning memory:
Set VFO A to the starting frequency, and VFO
B to the ending frequency.
Select the operating mode, preamp/attenuator
settings, and filter bandwidth. Also select the
tuning rate, which affects speed of scanning.
Store this setting in any memory (pg. 16).
To start scanning:
Recall the memory using
M
V
.
Hold
S C AN
to start scanning. To scan with the
receiver live (unmuted), continue to hold
S C AN
until you see
AF O N
(about 2 seconds).
You can stop scanning by manually rotating VFO
A, tapping any switch, hitting the key or keyer, or
pressing PTT. T o restart, hold
S C AN
.
Channel Hopping
Scanning or manually tuning over a numbered
m emory
range, rather than a
frequency
range, is
referred to as
channel hopping
. This is included in
the K3 primarily for use on 60 meters, 6 meters, and
transverter bands, although it can be used on any
band.
T he U.S. 60-meter channel assignments
correspond to VFO settings of 5330.5, 5346.5,
5366.5, 5371.5, and 5403.5 kHz. USB is the only
mode allowed on this band.
Memories to be used for channel hopping must be
consecutive, within the same band, and must be
assigned a text label that starts with an asterisk (*).
To set up channel hopping:
Set VFO A to the first frequency in the intended
channel-hopping range. (VFO B does not have
to be set higher than VFO A for channel
hopping purposes.)
T ap
M
V
, then select a memory (
0 0
-
99
)
using VFO A. For the five 60-meter channels,
we sugge st using memories 61-65. Start with
memory 61 for 5330.5 kHz (US), or your
count
r
y’
s
f
i
r
s
t
60
-meter allocation.
Rotate VFO B to select each memory label
position in turn as indicated by the flashing
cursor.
Use VFO A to change characters. The first
character must be an asterisk (*); other label
characters are optional.
After editing, tap
M
V
again.
Set up all other memories to be used for
channel hopping.
To enable channel hopping (manually or via
scanning), tap
M
V
, use VFO A to locate one of
the memories in the sequential range set up earlier,
then tap
M
V
again. VFO A will now cycle
through this range of memories as you turn it. To
disable channel hopping, tap
R ATE
or
F IN E
or
change bands.
To start channel-hop scanning, hold
S C AN
. You
can
al
s
o
us
e
“l
i
ve”
s
ca
nni
ng
as
ment
i
oned
a
t
l
e
f
t
.
Summary of Contents for K3
Page 71: ...71 K3 Block Diagram ...
