Ten-Tec TITAN III 417 Manual Download Page 43 | Manualshive

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6-3

METER-SWITCH BOARD A12
81947

ITEM

DESCRIPTION

C1

.01uF

C2

.01uF

C3

.01uF

C4

.01uF

C5

.01uF

C6

.1uF

C7

.01uF

C8

1uF 50V

C9

.01uF

C10

.01uF

C11

.1uF

C12

.1uF

C13

.01uF

C14

.01uF

C15

.01uF

C16

.01uF

C17

.01uF

C18

.01uF

C19

.01uF

C20

.01uF

C21

.01uF

C22

.01uF

C23

.1uF

C24

.01uF

C25

.01uF

D1

LED

D2

LED

D3

LED

D4

1N4148

M1

MULTIMETER 1mA

M2

PLATE METER 1mA

Q1

2N4124

R1

10K TRIMPOT

R2

10K TRIMPOT

R3

10K TRIMPOT

R4

1M

R5

1K

R6

10K

R7

10K

R8

47K

R9

1K

R10

1M

R11

10K TRIMPOT

TEN-TEC PART #

23260
23260
23260
23260
23260
23261
23260
23264
23260
23260
23261
23261
23260
23260
23260
23260
23260
23260
23260
23260
23260
23260
23261
23260
23260
28024
28024
28024
28001
98540
98544
25258
30038
30038
30038
30173
30138
30038
30038
30157
30138
30173
30038

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Summary of Contents for TITAN III 417

Page 1: ...5 ANTENNA REQUIREMENTS 1 6 GROUND CONNECTION 1 7 HIGH POWER OPERATION 1 8 ALC 1 9 COOLING SYSTEM 1 1 1 1 1 1 1 2 1 2 1 2 1 2 1 3 1 3 2 OPERATING INSTRUCTIONS 2 1 INTRODUCTION 2 2 FRONT PANEL CONTROLS 2 2 1 BAND SWITCH 2 2 2 TUNE 2 2 3 LOAD 2 2 4 POWER 2 2 5 OPR STBY 2 2 6 QSK PTT 2 2 7 MULTI METER SWITCH 2 2 7 a Ep 2 2 7 b Is 2 2 7 c FWD 2 2 7 d REF 2 2 8 PLATE CURRENT METER 2 2 9 OVERDRIVE 2 2 10...

Page 2: ...UIT DESCRIPTIONS AND ILLUSTRATIONS 5 1 INTRODUCTION 5 2 INPUT MATCHING ASSEMBLY A6 81946 AND 15M FILTER ASSEMBLY A7 81953 5 3 HIGH VOLTAGE RECTIFIER ASSEMBLY A2 81944 5 4 SCREEN SUPPLY AND GRID BIAS ASSEMBLY A10 81950 5 5 QSK ASSEMBLY A11 81949 5 6 SWR ASSEMBLY A4 RELAY A14 81951 81959 5 7 PLATE CONNECTOR ASSEMBLY A3 81948 5 8 METER SWITCH DISPLAY ASSEMBLIES A12 and A13 81947 and 81952 5 9 HV AC L...

Page 3: ... 1 4 2 5 2 6 2 7 2 7 2 8 2 9 4 1 ASSEMBLY A6 81946 INPUT MATCHING BOARD 5 1 CIRCUIT TRACE 5 2 COMPONENT LAYOUT ASSEMBLY A2 81950 H V POWER SUPPLY BOARD 5 3 CIRCUIT TRACE 5 4 COMPONENT LAYOUT ASSEMBLY A10 81950 SCREEN SPLY GRID BIAS BOARD 5 5 COMPONENT LAYOUT 5 6 CIRCUIT TRACE ASSEMBLY A11 81949 QSK BOARD 5 7 COMPONENT LAYOUT 5 8 CIRCUIT TRACE ASSEMBLY A4 81951 SWR BOARD 5 9 CIRCUIT TRACE 5 10 COMP...

Page 4: ...ISPLAY BOARD 5 15 COMPONET LAYOUT TOP CIRCUIT 5 16 BOTTOM CIRCUIT TRACE ASSEMBLY A9 81945 AC LINE DELAY BOARD 5 17 COMPONENT LAYOUT 5 18 CIRCUIT TRACE ASSEMBLY A5 81943 LOAD SHUNT BOARD 5 19 CIRCUIT TRACE 5 20 COMPONENT LAYOUT 5 21 SCHEMATIC DIAGRAM MODEL 417 5 10 5 11 5 10 5 12 5 12 5 13 5 14 5 14 5 15 ...

Page 5: ...nding on band frequency line voltage and impedance load 50 ohms unbalanced with VSWR 2 1 Meets or exceeds FCC requirements Built in T R switching in less than 7 ms A Screen grid voltage regulation current limiting over voltage protection and MOV arc over protection LED over current indication B Control grid voltage regulation current limiting and LED over current indication C Plate current over cu...

Page 6: ...grid current plate voltage forward or reverse power Standby Operate QSK PTT VOX and Power on off rocker switches Power on wait standby operate screen grid over current control grid over current Step start inrush protected Approximately 3000 VDC no load approximately 2700 VDC full load 6 amp 1000 PIV diodes in fullwave bridge circuit 9 each 220 uF electrolytic filter capacitors 10 ohm arc absorptio...

Page 7: ...itable antenna or 50 ohm dummy load of sufficient power rating or SERIOUS DAMAGE MAY RESULT 10 12 METER OPERATION OF THE TITAN III AMPLIFIER FCC rules permit licensed amateurs to modify their own amplifiers for operation in the 24 89 24 99 MHz and 28 29 7 MHz bands If you enclose a copy of your valid amateur radio license with the warranty registration card for your new amplifier an optional input...

Page 8: ...indicate overdrive conditions for the control grid and screen grid circuits Plate current overdrive trip is provided at 1 5 amps Band coverage includes 160 80 40 30 20 17 and 15 meters as shipped from the factory With proof of authorization 12 and 10 meters may be enabled with an optional matching network from TEN TEC Primary power of 240 VAC is required Remember tune up at 1500 watts output and 2...

Page 9: ... are packed with your TITAN III Make sure you have not overlooked anything 2 ea 20 AMP ABC 20 fuses 27038 2 ea 11 2 AMP MDL 11 2 fuses 27018 1 ea key cable 46160 1 ea 056 allen wrench 38040 1 ea 062 allen wrench 38088 1 ea 8 allen wrench 38124 4 ea 10 hex nuts 54005 for plate transformer installation 2 ea 4x40 long black flathead screw 60039 24ea 4x40 short black flathead screw 60080 to finish ins...

Page 10: ...nly a few threads Orient the transformer with the two wire HV lead side of the transformer coil toward the center chassis shield Being careful not to disturb the printed circuit board behind the meters align the slots in the transformer bottom mounting bracket under the two nuts that you just installed Slide the transformer toward the shield until the studs are seated in the transformer mounting s...

Page 11: ...of the amplifier is 50 ohms Antennas can exhibit an SWR of more than 2 1 in some part of the band For operation under these conditions we recommend using an antenna matching network that will enable the TITAN III to work into a 50 ohm load for maximum power transfer to the antenna 1 6 GROUND CONNECTION In the interest of personal safety and to reduce the possibility of stray RF pickup on interconn...

Page 12: ...for controlling this type of interference consult the ARRL Radio Frequency Interference Manual 1 8 ALC Most solid state transceivers do not provide connection for ALC input and it is unnecessary to make any external ALC connection to these rigs The ALC output jack is used primarily with tube type transmitters or transceivers with a negative going ALC system The ALC ADJUST control is used to set th...

Page 13: ...1 4 TRANSCEIVER FIGURE 1 2 T R CONNECTIONS FOR OTHER TRANCEIVERS WITHOUT TX OUT TX EN FIGURE 1 1 T R CONNECTIONS FOR TEN TEC TRANCEIVERS WITH TX OUT TX EN TITAN III TITAN III TITAN III TITAN III ...

Page 14: ... the TITAN III will power up and the indicator light in the POWER switch will light 2 2 5 OPERATE STANDBY This switch when in the OPERATE position places the amplifier online When in the STANDBY position the amplifier is bypassed and only the transceiver power is routed to the antenna When in the OPERATE position the indicator light in the switch will light NOTE No high voltage will be read on the...

Page 15: ...ce drive from the transceiver immediately and retune 2 2 10 WAIT This LED indicates a 3 minute warm up period for the tube at initial power up After being turned on for 3 minutes the wait LED goes out and the TITAN III can be placed in the operate mode 2 2 11 PEAK POWER BARGRAPH This meter is connected to the bridge at the antenna output through an emitter follower to monitor peak RF output power ...

Page 16: ... THE WAIT LED IS LIT 2 5 TUNE UP PROCEDURE The following section describes important points to observe during tune up A suggested procedure for safely tuning up the TITAN III is included 2 5 1 CHECKS TO MAKE BEFORE TUNING UP Check the load connected to the amplifier This can best be done by leaving the TITAN III in the BYPASS mode and using only the transceiver output power Use a reliable SWR brid...

Page 17: ...r power outputs 10 watts the amplifier may not respond when attempting to tune up This is normal Increase drive power slightly and continue tune up IF AT ANY TIME THE TITAN III DOES NOT RESPOND AS EXPECTED REMOVE DRIVE POWER IMMEDIATELY AND CORRECT THE PROBLEM BEFORE CONTINUING G Key the transceiver and slowly increase the drive power until you see the plate current increase H Adjust the TUNE cont...

Page 18: ...20 1 980 6 1 4 4 1 5 5 80 75 3 500 3 980 8 7 5 5 7 5 4 7 40A 40B 7 040 10 120 3 6 2 1 6 1 20 14 050 14 250 1 5 1 4 1 5 1 1 15 18 110 21 050 2 1 1 4 5 2 1 5 12 10 24 900 28 100 2 5 1 6 4 2 5 FIGURE 2 1 MODEL 417 TUNING CHART FOR AN IDEAL 50 OHM LOAD ...

Page 19: ...2 6 BAND FREQUENCY LOAD TUNE ANTENNA NOTES FIGURE 2 2 MODEL 417 TUNING LOG ...

Page 20: ...2 7 FIGURE 2 3 TITAN III FRONT VIEW FIGURE 2 4 TITAN III REAR VIEW ...

Page 21: ...2 8 FIGURE 2 5 TITAN III TOP VIEW ...

Page 22: ...2 9 FIGURE 2 6 TITAN III BOTTOM VIEW ...

Page 23: ...securely fastened in place These protective interlocks are provided to protect you from POTENTIALLY FATAL ELECTRIC SHOCK resulting from accidental contact with lethal voltages inside the amplifier However you should never depend on interlocks alone to protect you by removing dangerous voltages ALWAYS DISCONNECT THE AC LINE CABLE TO THE TITAN III BEFORE REMOVING THE TOP COVER 3 1 3 FUSES Except in ...

Page 24: ...ated A Fuse missing or open B House wiring incorrect or breaker open C Power cable to amplifier disconnected D Fuse on HV AC board A9 81945 open E Problem with low voltage power supply on QSK board A11 81949 2 Lights turn on but no high voltage A No HV will be present until amp is switched to OPERATE mode and timed out 3 Relays A9K2 and A9K3 on 81945 HV AC board close but relay K1 does not Plate V...

Page 25: ... value B Low or no high voltage TURN OFF THE AMPLIFIER IMMEDIATELY 9 Amplifier difficult to drive little or no output high plate current may be accompanied by a frying sound A Band switch in wrong position B Excessively high load SWR C Defective output relay A4K1 on 81951 SWR board D Arcing in tank circuit or antenna feed line 10 Excessive plate current in receive mode A Defective bias circuit 819...

Page 26: ... roll off of frequencies above the 15 meter band An optional 15 10M INPUT FILTER BOARD A8 81954 is available from TEN TEC to qualified amateur radio operators upon receipt of a copy of their amateur radio license Note Operation on the 10 meter band will also require additional modifica tions to the bandswitch assembly Please contact the factory for instructions or further information The impedance...

Page 27: ...5 2 FIGURE 5 1 INPUT MATCHING BOARD ASSEMBLY A6 CIRCUIT TRACE AS VIEWED THROUGH BOARD FIGURE 5 2 INPUT MATCHING BOARD ASSEMBLY A6 COMPONENT LAYOUT TOP VIEW ...

Page 28: ...the high voltage rectifier bridge D1 D20 H V filters C1 C8 and C14 and H V meter circuits FIGURE 5 3 HIGH VOLTAGE RECTIFIER BOARD ASSEMBLY A2 CIRCUIT TRACE AS VIEWED THROUGH BOARD FIGURE 5 4 HIGH VOLTAGE RECTIFIER BOARD ASSEMBLY A2 COMPONENT LAYOUT TOP VIEW ...

Page 29: ...Q4 switches zener diodes D2 D8 and D16 in during key down and out during key up This zeners the bias voltage to approximately 55 VDC during TX and 100 VDC in RX Due to differences in tubes J21 allows adjustment of grid bias in 4 settings 47V Pins 1 and 3 shorted 55V Pins 2 and 3 shorted 60V Pins 1 and 2 shorted 68V no pins shorted This adjustment is factory set to match the tubes shipped with the ...

Page 30: ...5 5 TOP SIDE COPPER BOTTOM SIDE COPPER FIGURE 5 6 SCREEN SUPPLY ASSEMBLY A10 CIRCUIT LAYOUT VIEWED THROUGH BOARD FROM TOP ...

Page 31: ...rameters are exceeded such as excessive plate current during a tube arc Both plate voltage and screen voltage are removed when plate current of 1 5A is reached The QSK CONTROL CIRCUIT consists of Q12 Q18 and Q21 Q23 This circuit samples input key requests standby operate modes power on off state state of output relay and RF presence at the antenna connection and input of the amp Hot switch protect...

Page 32: ...5 7 FIGURE 5 8 QSK BOARD ASSEMBLY A11 TOP AND BOTTOM CIRCUIT TRACES VIEWED THROUGH BOARD FROM TOP ...

Page 33: ... K1 output relay A14 hot shot speed up circuit Q3 C19 and the SWR bridge T1 for output power sampling FIGURE 5 9 SWR BOARD ASSEMBLY A4 CIRCUIT TRACE VIEWED THROUGH BOARD FROM TOP TOP COPPER BOTTOM COPPER FIGURE 5 10 SWR BOARD ASSEMBLY A4 COMPONENT LAYOUT TOP VIEW ...

Page 34: ...nd coupling capacitors to connect the 4CX800A plates to the amplifier tank circuit FIGURE 5 11 PLATE CONNECTOR BOARD ASSEMBLY A3 CIRCUIT TRACE VIEWED THROUGH BOARD FIGURE 5 12 PLATE CONNECTOR BOARD ASSEMBLY A3 COMPONENT LAYOUT TOP VIEW R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 C1 C2 C3 C4 ...

Page 35: ...ded by ten when measuring reflected power A12U1 samples screen and control grid current and drives the appropriate LED to indicate excessive current of either screen or control grid Q1 samples forward RF power voltage from the SWR board This voltage is peak held by C8 and sent to U2 to drive the peak reading display LEDs on DISPLAY BOARD A13 FIGURE 5 13 METER SWITCH BOARD ASSEMBLY A12 COMPONENT LA...

Page 36: ...5 11 COMPONENT SIDE COPPER FIGURE 5 14 METER SWITCH BOARD ASSEMBLY A12 CIRCUIT VIEWED THROUGH BOARD FROM FRONT PANEL SOLDER SIDE COPPER ...

Page 37: ...5 9 AC LINE DELAY BOARD A9 81945 This board contains the step start relays and associated circuitry to control inrush current while the H V filter capacitors charge FIGURE 5 17 AC LINE DELAY BOARD ASSEMBLY A9 COMPONENT LAYOUT TOP SIDE VIEW U1 GRN 1 U2 GRN U3 GRN U4 GRN U5 GRN U6 GRN U7 RED ...

Page 38: ...5 13 TOP COPPER BOTTOM COPPER FIGURE 5 18 AC LINE DELAY BOARD ASSEMBLY A9 CIRCUIT TRACE TOP VIEW THROUGH BOARD ...

Page 39: ...ance is paralleled across the variable load capacitor on bandswitch positions 160A and 160B and 80 FIGURE 5 19 LOAD SHUNT CAP BOARD ASSEMBLY A5 CIRCUIT VIEWED THROUGH BOARD FROM TOP BOTTOM COPPER TOP COPPER FIGURE 5 20 LOAD SHUNT CAP BOARD ASSEMBLY A5 COMPONENT LAYOUT TOP VIEW 81943 Assembled 78254 Rev A C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 ...

Page 40: ...5 15 FIGURE 5 21 SCHEMATIC DIAGRAM MODEL 417 ...

Page 41: ...pF 5KV N750 C5 150pF 5KV N750 C6 01uF 1KV C8 01uF 1KV C10 400pF 7 5KV N3300 P3 AC PLUG V1 V2 4CX800A TETRODE V1 V2 S TUBE SOCKETS W BYP F1 F2 20 ABS FUSE FUSE HOLDER 6 1 VERNIER TUBE RETAINER BAR KNOB LOAD TUNE KNOB DIAL SKIRT METER SW KNOB BAIL RT BAIL FOOT LF BAIL FOOT REAR FEET HOLE PLG MTR ADJ TEN TEC PART 81859 FROM 21199 21198 38305 93690 32063 32128 32129 32130 98545 FROM 32144 85427 2 8542...

Page 42: ...32067 32067 32072 25253 30155 30161 30154 30310 27018 INPUT MATCHING BOARD A6 81946 C1 15pF 1KV C2 01uF C3 100pF C4 01uF 1KV D1 1N4148 FL1 A7 15M INPUT FILTER L1 L2 1MH L3 COIL TOROID 7uH R1 100K R2 10K R3 150K 2W R4 470 7W R5 470 7W R6 470 7W R7 47 OHM 2W R8 47 OHM 2W R9 47 OHM 2W R10 47 OHM 2W R11 47 OHM 2W R12 50 OHM 90WATT 23372 23260 23013 23385 28001 81953 21135 85427 7 30161 30150 30311 307...

Page 43: ... 01uF D1 LED D2 LED D3 LED D4 1N4148 M1 MULTIMETER 1mA M2 PLATE METER 1mA Q1 2N4124 R1 10K TRIMPOT R2 10K TRIMPOT R3 10K TRIMPOT R4 1M R5 1K R6 10K R7 10K R8 47K R9 1K R10 1M R11 10K TRIMPOT TEN TEC PART 23260 23260 23260 23260 23260 23261 23260 23264 23260 23260 23261 23261 23260 23260 23260 23260 23260 23260 23260 23260 23260 23260 23261 23260 23260 28024 28024 28024 28001 98540 98544 25258 3003...

Page 44: ...6 30142 30132 30140 30161 30161 30161 30038 30620 30620 30038 30198 98449 FROM 32050 25260 25260 25101 PLATE BOARD A3 81948 C1 001uF 6KV C2 001uF 6KV C3 001uF 6KV C4 001uF 6KV L1 L2 PARASITIC SUP R1 R5 150 2W R6 R10 150 2W 23295 23295 23295 23295 85427 5 30407 30407 QSK BOARD A11 81949 C1 4 7uF 35V C2 1uF C3 1uF 50V C4 33uF 16V C5 33uF 16 C6 4700uF 35V C7 1uF 50V C8 1uF C9 10uF 23310 23261 23264 2...

Page 45: ...8 D13 1N4148 D14 1N4148 K1 SCRN RELAY K2 KEY OFF RELAY K3 OP STBY RELAY K4 KEY_OUT RELAY L1 100UH Q1 MPSW01 Q2 MJE371 Q3 MJE371 Q4 MJE371 Q5 MJE371 Q6 2N4124 Q7 2N4124 Q8 2N4124 Q9 2N4124 Q10 MPSW01 Q11 2N5060 SCR TEN TEC PART 23266 23266 23260 23260 23260 23260 23260 23260 23260 23260 23260 23260 23331 23263 23260 23260 23261 28047 28047 28047 28047 28001 28001 28001 28001 28058 28001 28001 28001...

Page 46: ... R15 22K R16 22K R17 22K R19 47 R20 10K R21 1K R22 1 5K R23 10K R24 10K R25 2 2K R26 10K R27 100 R28 1K R29 8 2K R30 2 2K R31 10K R32 10K R34 10K R35 270 R37 10K TEN TEC PART 25053 25258 25258 25258 25258 25258 25185 25001 25258 25001 25258 30138 30138 30150 30180 30138 30138 30140 30138 30138 30138 30138 30150 30150 30150 30154 30154 30154 30122 30150 30138 30140 30150 30150 30142 30150 30126 301...

Page 47: ...5232 SCREEN SUPPLY BOARD A10 81950 C1 100uF 160V C2 100uF 160V C3 100uF 160V C7 01uF 1KV C8 10uF 25V C9 33uF 16V C10 100uF 160V C11 10uF 50V C12 1uF C13 1uF C14 1uF 250V C15 100uF 160V C16 1uF 250V C17 01uF C18 10uF 25V C19 10uF 25V C20 01uF C21 01uF 1KV D1 1N5246 16V ZENER D2 1N756 8 2V ZENER D4 1A 1KV D5 1A 1KV D6 1A 1KV 23516 23516 23516 23013 23266 23308 23516 23266 23261 23261 23006 23516 230...

Page 48: ...100K R4 100K R5 10K R6 10K R7 100K R8 10K R13 12K 2W R14 3 3K 5W R17 4 7K 7W R18 680K 5W R19 680K 5W R20 680K 5W R21 680K 5W R22 22K R23 150 2W R24 100 OHM TRIMPOT R25 4 7K 7W R26 4 7K 7W R27 4 7K 7W R28 47 OHM 2W R29 10 OHM 5W Z1 MOV TEN TEC PART 28122 28136 28134 28134 28135 28135 28043 28041 28001 28010 21060 25258 25258 25107 25107 25393 25514 30076 30146 30161 30161 30150 30150 30161 30150 30...

Page 49: ...FILM D1 1N4148 D2 1N4148 D3 1N4148 D4 1N4148 D5 1N4148 D6 1N4148 D7 1N4148 D8 1N4148 D9 1N4007 D10 1N4007 D11 1N4007 D12 1N4148 D13 1N4148 D14 1N4007 K1 REED RELAY L1 1mH RFC L2 1mH MOLDED TEN TEC PART 23169 23260 23260 23264 23264 23397 23371 23371 23373 23373 23260 23260 23260 23260 23260 23260 23260 23200 23328 28001 28001 28001 28001 28001 28001 28001 28001 28043 28043 28043 28001 28001 28043 ...

Page 50: ...K R11 100K R13 10K R14 100K R15 10K R16 270 R17 10K T1 SWR XFMR TEN TEC PART 21116 21126 21135 25393 25258 25253 30408 30302 30136 30302 30150 30302 30146 30161 30161 30161 30150 30161 30150 30131 30150 85380 15 RELAY BOARD A14 81959 K1 OUTPUT RELAY RELAY PCB 32101 78270 LOAD CAP SHUNT BOARD A5 81943 C1 C9 150pF 3KV COG C10 C12 150pF 3KV COG 23542 23542 ...

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