14 Operating Your AT4K
1-800-773- 7931 W W W .PALST AR.CO M
Operating Notes:
1. An SWR of 1:1 is best, but an SWR as high as 2:1 may be
acceptable. Check your transmitter/amplifier manual for de-
tails.
2. If you cannot get an acceptable SWR, lengthen or shorten
your antenna and/or feedlines and retune.
VERY HIGH OR VERY LOW IMPEDANCE LOADS ARE TO
BE APPROACHED WITH EXTRA CAUTION, ESPECIALLY
WHEN YOU ARE GOING TO USE HIGH POWER. THE
USE OF AN RF ANALYZER (E.G. A PALSTAR ZM-30 AN-
TENNA ANALYZER) WOULD BE ADVISABLE TO MEAS-
URE AND UNDERSTAND THE KIND OF LOAD YOU ARE
ATTEMPTING TO USE.
3. If you get low SWR readings at more than one setting,
use the setting that gives:
•
highest FORWARD power reading
•
lowest REFLECTED power reading
•
uses the largest capacitance (highest number) on the
ANTENNA control
It is important to remember that consistent with low SWR
indicated on the tuner meter you must have, and adjust for:
- the largest capacitance (highest number) on the output
control to keep the losses low, and the voltage that would
appear on the antenna capacitor within the 5KV rating
Installation 7
1-800-773- 7931 W W W .PALST AR.CO M
12 VDC INPUT (2.1 mm
plug) for supplied
12VDC @ 500mA wall
adapter to power the
metering functions, me-
ter lamp, and relay.
RF INPUT coaxial
connector for input
from transmitter or
amplifier.
GROUND post/wing nut
ground connector.
BALANCED OUTPUT two
nylon High Voltage post
connectors for output to RF
balanced twin-lead antennas.
Relay switched.
COAX 2 coaxial connector for
output to Antenna Two.
COAX 1 coaxial connector for
output to Antenna One.
BYPASS coaxial connector
for output to dummy load
or third coax output. By-
passes tuner, but meter
circuits are on if 12VDC
is connected to rear panel
jack.
FIGURE 1 REAR PANEL CONNECTORS