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1-800-773- 7931       W W W .PALST AR.CO M  

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Important Safeguards 

WARNING: TO PREVENT FIRE OR 

ELECTRICAL SHOCK DO NOT 

EXPOSE TO RAIN OR MOISTURE

 

 

1. Read Instructions

—All the safety and 

operating instructions should be read before 
the appliance is operated. 

2. Retain Instructions

—The safety and 

operating instructions should be retained for 
future reference. 

3. Heed  Warnings

—All warnings on the 

appliance should be adhered to. 

4. Follow Instructions

—All operating and 

use instructions should be followed. 

5. Cleaning

—Unplug this unit from the wall 

outlet before cleaning. Do not use liquid clean-
ers or aerosol cleaners. Use a damp cloth for 
cleaning. 

6. Do Not Use Attachments

—not recom-

mended by the manufacturer or they may 
cause hazards. 

7. Water and Moisture

—Do not use this 

product near water—for example, near a 
bathtub, wash bowl, kitchen sink, laundry tub, 
in a wet basement, or near a swimming pool—
and the like. 

8. Accessories

—Do not place this product on 

an unstable cart, stand, tripod, bracket, or 
table. The product may fall, causing serious 
injury to a child or adult, and serious damage 
to the appliance. 

9. Ventilation

—This product should never be 

placed near or over a radiator or heat register. 
This product should not be placed in a built-in 
installation such as a bookcase or rack unless  

 

proper ventilation is provided or the manufac-
turer’s instructions have been adhered to. Any 
slots or openings in the cabinet are provided 
for ventilation. To ensure reliable operation of 
the product and to protect it from overheating, 
these openings must not be blocked or cov-
ered. The openings should never be blocked 
by placing the product on a bed, sofa, rug, or 
other similar surface. 

10. Grounding or Polarization

—if this prod-

uct is equipped with a 3-wire line cord recep-
tacle, it is intended for use with a 3-wire prop-
erly grounded power socket. Do not defeat the 
safety purpose of the supplied line cord and 
plug. 

11. Power Sources

—This product should be 

operated only from the type of power source 
indicated on the marketing label. If you are not 
sure of the type of power supplied to your 
home, consult your appliance dealer or local 
power company. 

12. Power-cord Protection

—Power-supply 

cords should be routed so they are not likely 
to be walked on or pinched by items placed 
upon or against them. Pay particular attention 
to cords at plugs, convenience receptacles, 
and the point where they exit. 

13. Lightning

—For added protection for this 

product during a lightning storm, or when it is 
left unattended and unused for long periods of 
time, unplug it from the wall outlet. 

 

WARNING:  TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT 
 

EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. DO NOT 

 

OPEN THE CABINET WHILE OPERATING. REFER SERVICING TO 

 

QUALIFIED PERSONNEL ONLY. 

CAUTION:  TO PREVENT ELECTRIC SHOCK, DO NOT USE THE THREE WIRE 
 

CORD WITH AN EXTENSION CORD RECEPTIACLE OR OTHER  

 

OUTLET UNLESS THE BLADES CAN BE FULLY INSERTED TO 

 

PREVENT BLADE EXPOSURE. 

An appliance and cart combination should 
be moved with care. Quick stops, exces-
sive force and uneven surfaces may cause 
the appliance and cart combination to 
overturn. 

The lightning flash with arrow head 
symbol, within an equilateral triangle, is 
intended to alert the user to the presence 
of uninsulated “dangerous voltage” within 
the product’s enclosure that may be of 
sufficient magnitude to constitute a risk of 
electric shock to persons. 

The exclamation point within an equilateral 
triangle is intended to alert the user to the 
presence of important operating and 
maintenance (servicing) instructions in the 
literature accompanying the appliance. 

 

Service and Warranty       19 

1-800-773- 7931       W W W .PALST AR.CO M  

Limited Warranty 

Palstar Inc. warrants products 
manufactured by it to be free from 
defects in material and workman-
ship under normal use and service 

for a period of one (1) year 
from the date of delivery to 
the first buyer

 (the “Warranty 

Period”). Palstar Inc’s obligation 
under this warranty is limited to 
repair or replacement of the prod-
uct; at its option at  the Palstar 
factory in Piqua, OH.  

 
Effective only when the product is 
returned to the factory with all 
transportation charges prepaid and 
examination of the product dis-
closes in Palstar’s judgment, to 
have been defective during the 
Warranty Period.  
 
The Warranty Period shall not 
extend beyond its original term 
with respect to interim in-warranty 
repairs by Palstar. This Warranty 
Period shall not apply to any prod-
uct which has been repaired or 
altered by anyone other than Pal-
star without prior written authori-
zation. Warranty does not extend 
to any products which have been 
subject to damage from improper 
installation, application or mainte-
nance in accordance with the oper-
ating specification. Palstar neither 
assumes nor authorizes any person 
to assume for it any obligation or 
liability other than herein stated. 

 
 

Repair Policy 

When sending in a product for 
service, please include a note 
clearly describing the problem, 
how you wish the item returned 
and how you wish to pay for the 
service.  
 
Our service rate is $30 per hour 
(1/2 hr. minimum). 

 

Return Policy 

All returns must receive prior au-
thorization from Palstar. Returned 
items must be received in origi-
nal—AS SHIPPED– condition in-
cluding the original box, manuals, 
accessories, and copy of sales re-
ceipt. Returns must be within 14 
days of purchase. Returned items 
are subject to a 25% restocking 
fee. Shipping is not refundable. 

 

 

NOTE: 

Keep the packing your 
AT4K was shipped in 
case a return for repair 
is necessary. 
Due to the high cost of 
the custom foam inserts, 
if you ship the tuner in 
other than the original 
packing, you will be 
charged $15 for replace-
ment packing when we 
return it to you. 

Summary of Contents for AT4K

Page 1: ... Looney Rd Piqua OH 45356 USA Customer Service and Sales Telephone 1 800 773 7931 Fax 1 937 773 8003 Email info palstar com VER 1 5 2008_04 Copyright 2008 Palstar Inc Printed in the U S A AT4K 2500Watt AntennaTuner Owner s Manual ...

Page 2: ...QUALIFIED PERSONNEL ONLY CAUTION TO PREVENT ELECTRIC SHOCK DO NOT USE THE THREE WIRE CORD WITH AN EXTENSION CORD RECEPTIACLE OR OTHER OUTLET UNLESS THE BLADES CAN BE FULLY INSERTED TO PREVENT BLADE EXPOSURE An appliance and cart combination should be moved with care Quick stops exces sive force and uneven surfaces may cause the appliance and cart combination to overturn The lightning flash with ar...

Page 3: ...n spilled or objects have fallen into the product c If the product has been exposed to rain or water d If the product does not operate normally by following the operating instructions Adjust only those controls that are covered by the operating instructions An improper adjust ment may result in damage and will often require extensive work by a qualified technician to restore the product to its nor...

Page 4: ...el Indicators and Controls Metering Dual movement cross needle power and frequency compensated coupler Controls Input Tuning 480 pF variable capacitor 6kV Peak Output Tuning 480 pF variable capacitor 6kV Peak Inductance 28 µH roller ceramic body roller inductor wound with 10 gauge wire Antenna Selector Switch 6 position Coax 1 tuned and tuner bypass Coax 2 tuned and tuner bypass Bypass and balance...

Page 5: ...nductor Voltage Loss 100 pF 11 7 µH 4550 16 200 pF 6 µH 2400 8 300 pF 4 µH 1600 6 General Description 5 1 800 773 7931 WWW PALSTAR COM The Palstar AT4K Antenna Tuner is an American made im pedance matching network that can provide unbalanced or bal anced output The AT4K T matching network utilizes a 1 1 unbalanced to balanced transformer in the in put of the network When the network is properly tu...

Page 6: ...n This done by switch ing the red TUNED OUTPUT button on the lower front panel between the Output knob and the Inductor knob to the COAX OUT position For a balanced feed antenna connect a balanced feedline to the white BALANCED OUTPUT posts on the back panel and make sure that the red TUNED OUTPUT button on the lower front panel is in the BALANCED IN position Connect a dummy load to the BYPASS con...

Page 7: ...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 WWW PALSTAR COM 12 VDC INPUT 2 1 mm plug for supplied 12VDC 500mA wall ada...

Page 8: ...ing your antenna connection To tune your antenna the switch selection must be set to COAX 1 TUNED COAX 2 TUNED or WIRE BALANCED ANTENNA Selecting COAX 1 DIRECT COAX 2 DIRECT or BYPASS bypasses the tuning section Also the tuned output switch 8 on pg 8 must be set to the correct position IN for balanced OUT for coax 6 Key your transmitter and adjust the power level for a reading of 100 150 watts on ...

Page 9: ...gh the impedance matching T circuit e TUNED COAX 2 Selects COAX 2 connector through the tuner matching T circuit f BALANCED OUT Selects the balanced output connectors located after the impedance matching circuit 3 PEAK HOLD Select IN to hold Peak readings for approxi mately 2 sec on the SWR meter 4 PEAK Select PEAK IN or AVGERAGE OUT power read ings 5 RANGE Select metering range 3000 Watts IN or 3...

Page 10: ...10 AT4K Schematic 1 800 773 7931 WWW PALSTAR COM AT4K Schematic 11 ...

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