Vertex Standard FT-8800R Alignment Manual

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Introduction and Precautions

The FT-8800R has been carefully aligned at the factory for the specified performance

across the 144 MHz and 430 MHz amateur bands. 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.

FCC ID: K66-8800R

Alignment

Vertex Standard Co., Ltd.

Table of Contents

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Page 1 Alignment Introduction and Precautions The FT-8800R has been carefully aligned at the factory for the specified performance across the 144 MHz and 430 MHz amateur bands. 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.
Page 2 20 °C and 30 °C (68 °C ~ 86 °F). When the transceiver is brought into the shop from hot or cold air it should be allowed some time for thermal equalization with the environment before alignment. If possible, alignments should be made with Vertex Standard Co., Ltd.
Page 3 0.65-0.75 KHz on the deviation meter. DCS Deviation With the wattmeter, dummy load and deviation meter connected to the antenna jack. Key the transmitter on 146.05/440.05 MHz. Adjust the frequency deviation is within 0.50-0.60 KHz on the deviation meter. Vertex Standard Co., Ltd.
Page 4 With the dummy load and SINAD meter connected to the external speaker jack. Inject a RF signal as a level of –7 dBµV to the antenna jack. Tune the receiver on 146.05 / 440.05 MHz. Adjust the SINAD is above 12 dB on the SINAD meter. Vertex Standard Co., Ltd.