Yaesu_FL-2100Z_user.pdf

INSTRUCTION MANUAT FL-21o,o.z. mus$t c0., trD. c P.o. Box 1500 OKYO, JAPAN YAISU C YAESU FL-2 IOOZ LINEAR AMPLIFIER The FL-21002 is high peribrmance linear amplifier designed for all Yaesu HF SSB transceivef. This amplifier uses two 5728/T160 transnitting triodes in a Class AB, grounded-grid configuration. Operation on the 160 through l0 meter bands is provided. Two quiet internal fans provide lorced air cooling lbr the final tubes. An intemal change- over circuit biases the tubes to cutoff duing receive operation, thereby eliminating unnecessary heat and diode noise generation. A unique safety iature incorporated in the design of the FL-21002 is a momentry bias delay circuit, which protects the tank circuitry from damage by delaying the activation of the final tubes until the T/R relay is firmly seated. An internl relay connects the antenna directly through to the exciter dudng standby operation, or wllen the amplifier is tumed off. A built-in SWR meter is also included, for monjtoring of the feedline SWR during eitller ampliier or exciter only operation. The power supply lor the FL-21002 is built in. lt requires no warnup time, and its healy-duty construction provides excellent regulation. We recommend that you red this manual in its entirety before commencing opeation. Opemtion of the FL-21002 is extremely straightforward, but improper adjustment ol the controls and switches could cause reduced power output or damage to the amplifier components. With proper care, tlle FL-21002 will provide nAny yean of reliable operation- I SPECIFICATIONS Plate input power: Power equirements: 1200 watts PEP SSB, 1000 watts CW,400 AC 100/110/117/20012201234 volts, 50160 wattsAM/FM/FSK Hz l I Plat voltage Curent consumption: j 2400 VDC (no load) AC 100 117 volts: 18 amps I Circuit type: Class AB, grounded g d Frcquency coveage : 160-10 meter amateur bands Drive requirements: 100 watts PEP for full output Input impedance: 50 ohms, unbalanced Output impedanc: 50-75 ohms, unbalanced 3rd ode distortion poducts: -31 dB or better I Kw PEP Tube complement: 2 x 5728f1160 Cooling system: Forced air AC 200 234 volts: 9 amps Dimensions: 157(H) x 345(W) x 326(D) mm Weight: Apprcximately 20 kg f , Specifications subject to change without notice or obligation. CAUTION HIGH VOLTAGES ARE PRESENT WITHIN THE CABINET OF THIS APPARATUS. HARMFUL OR FATAL ELECTRIC SHOCK WILL RESULT IF HIGH VOLTAGE CIRCUITS ARE TOUCHED BY THE USER. REFER ALL SERVICE WORK TO AN EXPERIENCED TECHNICIAN. SAFETY INTERLOCK SWITCHES ARE IN. CLUDED IN THE FL-2IOOZ TO DISCON. NECT POWER IF THE TOP COVER IS REMOVED. DO NOT ATTEMPT TO DEFEAT THESE SWITCHES,AND ALWAYS DISCONNECT THE C LINE BEFORE OPENING THE CABINET. t.,- - 2 - FRONT PANEL CONTROLS AND SWITCHES a (1) POWER This is the main power on/oi switch tbr the amplifier- (2) OPER/STBY This switch epplies bies to the final tubes during standby (STBY) operation, cutting them off. The relay is lso disengaged ir1 this condition. (3) METER lhe METER switch selects indication on the SWR/ ammeter of plate current, relative ibrward power, and relative reflected power. (4) SWR SENS This control sets the SWR meter sensitivity level. (5) LOADING This control adjusts the tuning of the loading capacrtor. (7) PLATE This control adjusts the tuning of the plate tank capacitor- (8) SWR/AMMETER This meter displays either the feedline SWR or amplifier plate currcnt, depending on lhe position of the METER switch. (9) PLATE VOLTAGE METER The amplifier plate voltage is displayed on this meter, in thousands of volts. (6) BAND This knob selccts the blnd of operation io the amplifier, which must be the same as that of the transmitter. 3 REAR APRON CONNECTIONS I (r) RF OUT This coaxial jack provides the RF output to the antenna. (2) RF IN The RF input from the transceiver should be connected herc. (3) GND Connect the amplifier to the station ground bus at this point. (4) FUSE For AC 100/110/1 17 volts, use a 20 amp fuse. For AC 2OOl22Ol234 volts, use a l5 amp fuse. Do not use a fuse ofthe improper rating. (s) ALC This RCA jack is used for connection to the tmns- ceiver ALC Line. (6) RY This RCA jack is used for connection to the transceiver relay (make-on-transmit) contacts. I 0r CAUTION NEVER OPERATE THIS EQUIPMENT WITHOUT CONNECTING IT TO GOOD EARTH GROUND. LIKEWISE, NEVER OPERATE THE AMPLIFIER WITHOUT HAVING AN NTENNA OR DUMMY LOAD CONNECED TO THE REAR PANEL RF OUT JACK. I I I I I I INSTALLATION UNPACKING AND INSPECTION Carefully remove the FL-21002 from its packing crrton. and examine the unit ibr any signs of visible damage. Check thc controls and switches 1br nornlr1. positive action- lf any damage has been sustained, docrunent the delnage completcly, and notiy tlle sllippjng compny at once. Seve the packing cafton and fom packing meterial fo possible use at a lrter date- INSTALLATION PROCEDURE In general. the tlr1plifier lould be sjtuated in such a way as to allow liee air circulation arcund flre cabinet. Do not phce books, papers. or other equipmcnt on top of the FL-2i002, and do not ob.r|. I rl, r.e I-o* o 1t trJm rre lnf Jno Rer to the following page ibr intcrconnection details ofa typical installation using the FL fl00Z. The LC input to the transceiver should be connected to thc FL-21 002 ALC jack. The make- on-transmit contact ol the relay uscd ior T-R switching must be connected to thc FL-21002 RY jack, with a common lead (to the outer contect of RCAjack). Use a short length of RG-s8A/U or RC8A/U coax cable ibr the intcrconnection between the trans- ceiver ANT jack arld the FL,2l00Z RF IN jack. For Ihe output lead frorn the FL-21002 RF OUT jack, do not use Ure small RG-ssA/U type of cable, as its power rating is insufficient ibr the power level produced by the FL-21002. The transceiver used to excite ihe FL-21002. should be cepable ofproducing 100 watts PEP SSB outpui Ior full output iiom the amplifier. POWER CONNECTIONS The FL-21002 includes a builFin power supply capable of operation from AC 100/ll0/ll71200/ 220/234 volts. 50/60 Hz. Betbre connecting the amplilier power cord to the AC supply meins, be absolutely certain that the voltage specification ma.kecl on the rear apron of the amplilier matches your local supply voltage. Refer to the power transforrner pdmary connection diagram when changing voliages. It is essential that a fuse of the proper rating be used with this equipment. For AC 100/110/117 volts, use only a 20 amp fuse. For AC 200/220/ 234 volts, use only a 15 amp fuse. WARNING PERMANENT DAMAGE WILL RESULT IF IMPROPER AC SUPPLY VOLTAGE IS AP. PLIED TO THIS EQUIPMENT. OUR WAR RANTY DOES NOT COVER DAMAGE CAUSEI BY IMPROPER SUPPLY VOLTAG OR USE OF AN IMPROPER FUSE. If at all possible. the FL-21002 should bc operated iiom an independent 220-volt AC line_ The line should be fused for 10 amperes, and no other equipment should be run off the same circuit. lf a I 17-volt circuit is a1l that is vilable, it should be fused ibr 20 amperes, and circuit conductors should be no smaller than #10 AWG. UNDER NO CIRCUMSTANCES should the FL-21002 be operated from a I I ?-volt house lighting circuit, as the cifcuit condLrctors may not be large enough to c.lrry this curent load- ANTENNA REQUIREMENTS The FL-21002 has been designed for use with an antenna presenting a 50 to ?5-ohm rcsistive load to the RF OUT jack. Wren using n antenna present- ing an impedance which is far from this figure, use an antenna natching network in oroer ro bring the antenna system impedance within the operating range of this ampliler. GROUND This ainplifier should be connected to a good earth ground, using a hea.ry, braided cable not more than 10 1et long for connection to the station ground bus. The connection ofthe ground cable should be made to the tear apron GND terminal_ FL.21002 INTERCONNECTIONS MONNOTE FT 901/902 1 1 1 I 9 3 3 3 3 a a 3 r Jump6 m!si be in$al ed as indlled. Th FL 21002ls non-OsK amplller,and may b dmqd by attempting OSK operarlon. shielded be with rhe brid cnnc1d to common/sround. RY plus may bejumpered t t t r tl t l l r AC ?ov t- l. l * t- l r AC 234V t Jz* ltotl CRAY .lv V IOLE T o BLUE ltTv GREEN 00v YELLOW roov G o ORANGE RD BROWN t zow 7 V llo V |OOV POWER TRANSFORMER PR1MARY t 6 CONNECTIONS OPERATION BFFORE CO4MENCNG OPERATION, CON. FIRM THAT fH POWIR TRANSFORMER PRIMARY lIAS BEEN CORRECTLY WIRED FOR YOUR LOCAL,C SUPPLY VOLTAGE, AND CONFIRM HAT A FUSE OF THE PROPER RAIINC HAS BEEN INSTALLED. BE CERTAIN TIIAT AN ANTENNA IS CON NECTED TO TIIE RF OUT JACK. Ihc exciter nray be tuned up with the amplilicr on or off. If you tune up the exciter with the ampliiier turned on. ser rhe OPER/STBY to STBY during exciter tuning. Preset the FL-21002 controls and switches as tbllows: P O W E R s w i t c h . . . . . O F F OPER/STBY switch. . SIBY M b T E R s w i t c h . . . . . l P BAND switch. . Desircd brnd PLATE control . . . . . To the position shown tn Table L Tunr the FL-21002 POWER swiich ON. and recheck the exciier tu|ing with the OPER/STBY switch still sci to STBY. Now rotate the exciter drive control fully counterclockwise (mlnlmur drive level). Set the OPI-R/STBY switch to OPER. Close the excite. PTT switch, end slowly advance thc drive control ol-the exciter until a reading of 0.2 emps is obtained on the FL-21002 plaie meter. Tune the fL-21 002 PLATE corrtrr,rl ibr a dip (rninimun metcr eading) in the plaie current indication or thc lneier. Retu|n the exciter to standby (release the PI I switch). Placc the MTER switch in the FWD position (to read rclative brward power). Agah apply drive froln the exciter. arrcl advance the SWR SENS control for a rcading of rpproximately I/a scale. Now advancc thc LOAD oontrol in sniill incre- ments, e ch time tuning the PLATE control lot a maximum forward power reading. djLrst the SENS control, as necessary. to prevent off-scale deflec- tion of the ibrward power mcter. DO NOT EXCEED O SECONDS OF KEY.DOWN TINIE DURING TUNING, SO AS NOT TO DAMAGE THE BXCITER OF AMPLIiIER FINAL TUBES, Peak power should occur at a platc current (lP) reading of appoximately 0.5 amperes. Approxi Inte settings of the I.L-:1002 LOAD control for mximuIr1 output into a 50 ohm load are shown in fable l. When tuning, be certain to start t r very low drive level, nd keep the plate currcnt dipped. Likewise, do not begin tuning with the LOAD control advanccd beyond the 0 point. The corect tcch- nique is to increase the excite. drive only aftc an initial dip is obtained ir1 the plate cLrrfent. With propef care taken in tuning, your FL-ll00Z will Iru!rde n.ny yerr. of .rorrble ree oirerJlro, . The amplificr is now iuned br SSB and CW opera- tion. For SSB opetution, the exciter should bc adjusted so thrt rhe FL-21002 piate cutrent indicrtes between 0.2 and 0.3 amperes under normal voice operating conditions. Ilecuse the neter cannot follow the current llow correspond- jng to lhe spcech signal, the actual peak current value is approximatcly twice the value shown on For AM operation, tune up the FL-21002 as de cribeJ ibove. Now r.l u.r rre circr caricl level for a plate cu ent indication o 0.2 amps with u.modulated carrier- If an exciter capable ol FM or FSK operation is used with the FL-ll00Z . do not exceed the fatings stipulated fbr AM operation. For CW operation, set the dive level of the excrter for a power inpllt of I kilowatt (e.g- 0.5 amps at 2000 volts plate current under load). To measure the SWR at the antenne jack, set the meter switch to FWD (Forward). arrd apply RF power. Adjust the SWR SENS control for a full scalc dcflection of the SWR meter. Now set the METER switch to REF (Reflected). The SWR my be reed directly from the upper scale of the meter. LOAD control. . Fully counierclockwise to number 0- The FL-21002 employs two 5728/T160 zero bias triodes in class AB, grounded-gid configuration. RF d ving power from the exciter is applied through antenna changeover relay RL, and an input matching network to the filaments. The broadband input pi networks requirc no tuning to present the correct impedance match to the tubes and 50 ohms to the exciter. A sample of the exciter RF is taken from the filaments through Cr! to ALC rectifier diodes Dr (151007) and D, (10D10). Trimmer capacitor TCr then serves as a voltage divider in conjunction with Cr, for adjusting the level of ALC voltage provided for the exciter at J3 . CIRCUIT DESCRIPTION Table I The grid bias is set by Ra. When antenna rclays RL, and RL, are activated (to transmit), Cao6 dischalges through R3oa. The values of these components are selected so as to delay activation of bias relay RLor long enougl to ensure that the RLr and RL, are fully closed- This protective featurc prevents a momentary open circuit ai the ampliier output which might otherwise occur due to rclay tmvel time. while the amplifier is set to standby, switch Sa is open and the tubes are biased to cut-off. The plates of the amplifier tubes are connected through an adjustable pi network of the RF OUT jack, and the output is sampled for dircctional relative power measurement by a bridge circuit, for rclative power and SWR indications on the mete. ) BAND FREQ (MrL) PALTELOADING 160 1.8It 2.097 80 3.5lI 4.063.5 40 7.O 3.51.5 7.552.5 30 10.052 10.55.52.5 20 14.0 7 3 14.5 1.5 3.5 l7 18.05.5). 18.562.5 15 21.O8 )t.54 t2 24.573 25.O 7.5 3.5 l0 28.09 29.7l04.5 - 8 MAINTENANCE WRNING LETHAL VOLTAGES ARE PRESNT WITHIN THE CABINET OF THIS EQUIPMENT. BEFORE REMOVING THE COVERS OF THIS AMPLI, FIR, UNPLUG THE POWER CORN FROM THE AC SUPPLY LINE. USE EXTREME CAUTION WHENEVER MAKING ANY ADJUSTMENTS IN- SIDE THE CABINET. NEVR WORK ON THIS MPLlFltsR WHILE ALONE: YOU MAY NEED SOMEONE TO TURN OFF THE POWER QUICK- LY. RMOVAL OF TOP ND BOTTOM COVERS After disconnectilg the AC powe cabie frcm the AC supply mains, the top cover o the amplifier may be removed by removing the I screws. Then remove the 12 screws affixing the bottom cover, and rcmove the cover. AND ALIGNMENT REMOVAL OF THE PA COMPARTMENT SHILD COVER Once the top cover is removed, the shield cover for the PA cornpament may be removed by taking olf the screws of the shield cover. A safety inter_ lock will short out the filter capaciton when this is Always discharye the plate cap to g.ounal with an insulated scrcwddver when working on the pA comparlment circuitry. Wait at least ten minutes after tuming the amplifier off before removing the shield cover. TUBE REPLACEMENT If replacement of ihe amplifier tubes becomes necessary, use tubes of identical manufacture as the originals. See your Yaesu dealer. Cr TOP VIEW Fig. I I TROUBLESHOOTING Should trouble arise which cannot be cured by tube substitution, we recommend that the ampl- her be retumed to the dealer from whom yolr purchased it for seicing. If this is impossible write to the Yaesu agent in your county, including as many details of the poblem s possiblc ln counlries wherc Yaesu is not curlently rcpresenled, yolr may write directly to the 1ctory: Yaesu Musen Co., Ltd-, C.P.O. B