Yaesu FTM-10R Technical Supplement

Also see for FTM-10R: Brochure & specs Manual Operating manual Easy Programming Guide

Contents

9FTM-10R/E Technical SupplementThe FTM-10R/E has been carefully aligned at the fac-tory for the specified performance across the 144 MHzand 430 MHz amateur bands. Realignment should there-fore not be necessary except in the event of a componentfailure. All component replacement and service shouldbe performed only by an authorized Yaesu representa-tive, or the warranty policy may be void.The following procedures cover adjustments that arenot normally required once the transceiver has left thefactory. However, if damage occurs and some parts aresubsequently replaced, realignment may be required. If asudden problem occurs during normal operation, it is like-ly due to component failure. Realignment should not bedone until after the faulty component has been replaced.We recommend that servicing be performed only byauthorized Yaesu service technicians, who are experiencedwith the circuitry and fully equipped for repair and align-ment. Therefore, if a fault is suspected, contact the dealerfrom whom the transceiver was purchased for instruc-tions regarding repair. Authorized Yaesu service techni-cians realign all circuits and make complete performancechecks to ensure compliance with factory specificationsafter replacing any faulty components. Those who doundertake any of the following alignments are cautionedto proceed at their own risk. Problems caused by unau-thorized attempts at realignment are not covered by thewarranty policy. Yaesu must reserve the right to changecircuits and alignment procedures in the interest of im-proved performance, without notifying owners. Under nocircumstances should any alignment be attempted unlessthe normal function and operation of the transceiver isclearly understood, the cause of the malfunction has beenclearly pinpointed, any faulty components replaced, andthe need for realignment is determined to be absolutelynecessary.Required Test EquipmentThe following test equipment (and familiarity with its use)is necessary for complete realignment. Correction of prob-lems caused by misalignment resulting from use of im-proper test equipment is not covered under the warrantypolicy. While most steps do not require all of the equip-ment listed, the interactions of some adjustments mayrequire that additional adjustments be performed. Do notattempt to perform only a single step unless it is clearlyisolated electrically from all other steps. Have all testequipment ready before beginning, and follow all of thesteps in a section in the order presented. RF Signal Generator with calibrated output level at 500MHz Deviation Meter (linear detector) AF Millivoltmeter SINAD Meter Inline Wattmeter with 5% accuracy at 500 MHz Regulated DC Power Supply: adjustable from 10 to 17VDC, 15A 50-ohm non-reactive Dummy Load: 100 W at 500 MHz Frequency Counter: >0.1 ppm accuracy at 500 MHz AF Signal Generator DC Voltmeter: high impedance VHF/UHF Sampling Coupler AF Dummy Load: 4 W, 5 W Oscilloscope Spectrum AnalyzerAlignment Preparation & PrecautionsAlignment Preparation & PrecautionsA dummy load and inline wattmeter must be connectedto the main antenna jack in all procedures that call fortransmission, except where specified otherwise. Correctalignment is not possible with an antenna. After complet-ing one step, read the following step to determine wheth-er the same test equipment will be required. If not, re-move the test equipment (except dummy load and watt-meter, if connected) before proceeding.Correct alignment requires that the ambient temperatureof the transceiver be the same as that of the test equip-ment, and that the temperature be held constant between20° and 30° C (68° ~ 86° F). When the transceiver is broughtinto the shop from hot or cold air it should be allowedsome time for thermal equalization with the environmentbefore alignment. If possible, alignments should be madewith oscillator shields and circuit boards firmly affixedin place. The test equipment must be thoroughly warmedup before beginning.Note: Signal levels in dB referred to in this procedure are basedon 0 dBμ = 0.5 μV(closed circuit).Alignment