1/3
• •
FT-1500M Alignment
The FT-1500M has been carefully aligned at the factory for the specified performance across the
amateur band.
Realignment should therefore not be necessary except in the event of a component failure.All
component replacement and service should be performed only by an authorized Yaesu representative,
or the warranty policy may be voided.
The following procedures cover the sometimes critical and tedious adjustments that are not normally
required once the transceiver has left the factory.However, if damage occurs and some parts are
replaced, realignment may be required.If a sudden problem occurs during normal operation, it is likely
due to component failure; realignment should not be done until after the faulty component has been
replaced.
We recommend that servicing be performed only by authorized Yaesu service technicians who are
experienced with the circuitry and fully equipped for repair and alignment. Therefore, if a fault is
suspected, contact the dealer from whom the transceiver was purchased for instructions regarding
repair. Authorized Yaesu service technicians realign all circuits and make complete performance
checks to ensure compliance with factory specifications after replacing any faulty components. Those
who do undertake any of the following alignments are cautioned to proceed at their own risk. Problems
caused by unauthorized attempts at realignment are not covered by the warranty policy. Also, Yaesu
must reserve the right to change circuits and alignment procedures in the interest of improved
performance, without notifying owners. Under no circumstances should any alignment be attempted
unless the normal function and operation of the transceiver are clearly understood, the cause of the
malfunction has been clearly pinpointed and any faulty components replaced, and the need for
realignment determined to be absolutely necessary. The following test equipment (and thorough
familiarity with its correct use) is necessary for complete realignment. Correction of problems caused
by misalignment resulting from use of improper test equipment is not covered under the warranty
policy. While most steps do not require all of the equipment listed, the interactions of some
adjustments may require that more complex adjustments be performed afterwards. Do not attempt to
perform only a single step unless it is clearly isolated electrically from all other steps. Have all test
equipment ready before beginning, and follow all of the steps in a section in the order presented.
Required Test Equipment
1. RF Signal Generator with calibrated output level at 200 MHz
2. Deviation Meter (linear detector)
3. AF Millivoltmeter
4. SINAD Meter
5. Inline Wattmeter with 5% accuracy at 200 MHz
6. Regulated DC Power Supply: adjustable from 10 to 17 VDC, 15A
7. 50-ohm Non-reactive Dummy Load: 100W at 200 MHz
8. Frequency Counter: >0.1 ppm accuracy at 200 MHz
9. AF Signal Generator
10. DC Voltmeter: high impedance
11. VHF Sampling Coupler
12. AF Dummy Load: 4 ohm, 5W
13.Oscilloscope
14.Spectrum Analyzer
Alignment Preparation & Precautions
A dummy load and inline wattmeter must be connected to the main antenna jack in all procedures that
call for transmission, except where specified otherwise. Correct alignment is not possible with an
antenna. After completing one step, read the following step to determine whether the same test
