TABLE OF CONTENTS OPERATION INSIDE VIEW Vit THEORY OF OPERATION VIOL TROUBLE SHOOTING i, 43 IX. BLOCK DIAGRAM OPTION Lot BOARD LAYOUT. SEPARATE XiL SCHEMATIC DIAGRAM.
SECTION H DESCRIPTION MULTI MODE 2 METER TRANSCEIVER The 16-211 provides FM, USB, 158, CW coverage in the 144 ~ 148MH2 frequency range. Thus the 10211 can be used for DX local calls; and satellite work, COMPUTER COMPATIBLE TUNING SYSTEM The local oscillator circuit {VEO) employs a C:MOS LSI for the PLL that has been: custom: made on the basis of ICBM's advanced digital technology. The VEQ circuit is a digital PLL circuit that controls frequency determination by pulses produced by ‘the tuning control.
Lot UNPACKING: Carefully remove your transceiver farm the packing carton snd examine it for signs of shipping: damage. Should any be :apparent, notify the delivering carrier or dealer immediately, stating the full extent of the damage. It 13 recommended vou keep the shipping cartons. In ‘the event storage, moving, oF reshipment becomes necessary, they come in handy. Accessory hardware, cables, act, are packed with the transceiver. Make sire vou have not overlooked anything. {dynamic type) i 7.
For DC operation: 1f you would like 1o use your car battery or any other DC power supply, be sure that its output voltage Volts and the current capacity is at least 3 Amps.: The maximum power consumption of the set during transmission runs from 3 = 3.5 Amps, so keep that in mind it the unit is installed in your automobile. Attention should else be paid o the condition of the battery and electrical system.
HEADPHONES Any good headphone set, including stereo: type. that has 4 = 16 ohms impedance can be ued: | With the plug inserted halfway into the PHONES jack; both the headphones and speaker will operate.
CATION 1V CONTROL. FUNCTIONS FRONT PANEL & TRANSMIT INDICATOR GHOULISH LOCK INDICATOR B MULTI FUNCTION METER SUBSEQUENT DISPLAY (DRE POWER CONTROL. RECEIVE INDICATOR T DISCRIMINATOR METER CHIC GAIN CONTROL: (3) POWER: SWITCH PHONES JACK B MIC CONNECTOR{4 SQUELCH \CONTROL . DIAL LOCK BUTTON: EAE AN CONTOUR L 06 {TUNING CONTROL @} MODE SELECT SWITCH.
18. set.. Push the switch IN {dock position) 1o apply power 1o the set. Push again to unlock the switch to remove power from the set. {in the unlocked position, power for the memory. circuit will remain if the memory switch @ is in the ON {Up) position. {See page 1311 SQUELCH CONTROL Adjusts the SQUELCH threshold for proper operation in the EM MODE. The SQUELCH circuit does not operate neither 858 (BUSBY) or CW. MODE. Clockwise rotation increases SQUELCH action.
Lo 9. RIT CONTROL Shifts the receiver frequency £ kHz either side of the transmit frequency. When the RIT is ON, the ‘BIT LED:is Illuminated: The LED-also represents the 0" position, Rotating the control to the side raises the receiver frequency, and rotating ta the () side lowers the receiver frequency. : With the RIT ON, if the tuning knob 4 is moved one increment; the RIT circuit is automatically pulsed OFF.
SSB: and: CW mode, the frequency is changed in: 100Hz Steps which correspond o the. smaller vernier marks on: the knob.: ‘The larger marks represent kHz steps. :One complete rotation: of the tuning knob results: in a KHz frequency: increase or decrease in Tooth steps exactly as shown by the small vernier marks: anther FM mode ‘and between 146 10 148NMHz . the frequency is changed in KHz steps. When tuning antipasti 147.995.0MHz, the frequency will automatically revert to 144.000.0 MHz.
22, TRANSMIT INDICATOR When your sites in the transmit mode, this LED is lit. 23. DISCRIMINATOR METER I the ‘FM: mode, the discriminator meter indicates when:the incoming signal has been “centered’’ on frequency. MULTIPLICATION METER With the 1-211 in the receive mode, this meter acts as an S mater.. Signal strength is indicated on scale of 51+ 58 and S9+2008 16 S9+60dR. I the transmit ‘mode; the meter indicates: the relative output power.
SWR SWITCH When measuring SWR, calibration SET and SWR reading functions are selected with this switch. Remember, at the factory, the switch is in the SET position and fixed in place with 3 plastic screw to prevent it from switching to SIR: Remove the resew before attempting to read SARI SWR SET CONTROL This control calibrates the miter needle to the SET position when yol want to determine the value of SWR.
138 ANTENNA CORNEA ORI L G i SCOPE TERMINAL INTERNAL SPARER SACK. SPARE TERMINALS HDE POWERPOINT MEMORY. STITCH CLERESTORY: SOCKET. AGROUND TERMINAL e 5 ‘fifwc POWER: SOCKET SENSE HOLDER, KV Ak GROUND TERMINAL To prevent electrical shack, TVI; Cabstand other problems, be sure to ground the equipment through the GROUND TERMINAL. For best results use as heavy a mitigates wits or strap as possible and make the connection a5 short as possible; even in mobile install: nations, .
HOW TO TUNE The: following instructions:are for tuning in any mode: :Please read carefully and understand fully bis fore tuning ON your unity Proper tuning is necessary for optimum operation: TUNING KNOB The transmit or receive frequency is displaced on 7 segment: LED down: 1o 10082 digits Rotating the tuning knob clockwise increases the frequency, while: turning counterclockwise decreases the frequency in 1002 steps in the USB, LSB and CW modes; and in kHz steps 0 the EM mode and in the frequency range bet
L6 e ‘gunning Speed :Button while rotating the: Tuning Knob the: small: vernier: marks epithet Tuning Knob is changed to correspond to kHz steps. At the same time, the 100Hz digit is cleared oh the display 1o show 107 This button will allow you to quickly OSY over aide frequency range. Pushing the bitten during tuning from 146.000MHz 1o 147.995MHz, and in the FM mode; has o effect as the frequency s already changing ih SK Hz steps.
counter-clockwise will «decrease ‘the: frequency: in 100Hz steps in Theseus, 1 8B and CW modes and in: 5K Mz steps:in:the FM mode. NOTE: : Notating the book counterclockwise immediately: after applying power will jump ‘to ‘the ‘highest frequency. 147.995MHz and: will decrease the frequency in SK Hz steps. W Switching from one VEO to the other VEO does not clear the first VEO. The frequency is retained in'the Veto's memory. FOR EXAMPLE: 1 144.125.
SR The: transmit and receive frequency will now be controlled by "A™ VEQ, but "8 " VEG will follow: “A™ VEQ at the same frequency difference they wees set at. so you can return to DUPLEX operation gaily RIT (RECEIVER INCREMENTAL TUNING) By: using the: BRIT circuit, vou ‘can shift the receive frequency kHz either side of the transmit frequency without moving the transmit frequency itself.
8SB OPERATION 1. 2. 3 RECEIVING Afar connecting an antenna, microphone, etc., set knobs and switches ‘as follows. POWER SWITCH OFE T/R SWITCH RECEIVE (UP} VOX s Witch OFF {UP) AGC SWITCH SLOW (UP) NB (NOISE BLANKER) SWITCH OFF (UP) MODE SELECT SWITCH USB prissy VEO SWITCH HAT B or SIM AF GAIN:CONTROL: Completely Counter-clockwise RE GAIN CONTROL Completely Clockwise RIT CONTROL Center: {clockwork position The other knobs are unrelated to receiving and need not beset at this time.
For normal SSB reception, set the AGC switch in the UP (slow] position, Set the AGG switch in the FAST (down) position, when tuning or receiving signals with short interval fading. When in‘the FAST position, the hang AGC circuit is turned OF F and the time constant is shortened. 1 TRANSMITTING Before transmitting, listen:in the receive mode to make sure our transmission will not interfere with other communications, ' If possible, use a dummy load for adjustment instead of an antenna.
Rotate the tuning knob until 2 800Hz (approx.) beat tone is heard from the speaker or head phones. Set the noise blanker switch and/or the AGE switch for clear retention, the same as for 888 reception: TRANSMITTING Insert: the keyed plug into the KEY Jack on the rear panel of the unit, and set knobs and switches the same as for CW reception, By setting the T/R switch to Transmit, the transmit LED is lit and shows that vou are ready for CW: transmission.
PR The A" VEO and the “B” VFO will always keep 600KHZ difference; so now you can easily access any repeats that has 600K Hz input/output separation. Adjust the volume control to a comfortable listening level of anise, If no signal is present, Carefully adjust ths SQUELCH control clockwise until the noise just disappears, and the RECEIVE indicator goes out, This is the proper squelch threshold chatting and must be done when rio signal is present.
for the lowest possible SWERVE: After taking the reading, return the switch 1o the SET position. 2. DIMMER: SWITCH For optimum visual comfort; the meter lamps and frequency display LED are dimmed and brightened, depending on the brightness or darkness of the surrounding light, by use of the DIMMER SWITCH. When the DIMMER SWITCH is turned ON {down), ‘the meter lamps'and the frequency: display; LED are dimmed.
g ACC SOCKET CONNECTIONS PIN No. FUNCTION 1. Output from discriminator. 2. 138 Volts DC in conjunction with PowerPoint switch operation, 3. Connected to push-total: T/R change-over switch. When grounded, the sot operates in the transmit mode. 4 Output from the receiver detector stage. Fixed output regardless of AF output or AF gain: 5 Output from transmitter MIC amplifier stage. B 8 Vomits DC available when transmitting: {relay can not be directly actuated:) 7. Input for external ALC voltage, £ 8. Ground 9.
SECTION Wil THEORY OF OPERATION OUTLINE The 10211 employs & digital phase locked too {PLL) circuit as the local oscillator for both transmit and receive. The output of the PLL circuit is approximately 10.7MH2 below the receive piquancy, thereby spurious is Kept to'a minimum The frequency is determined as follows.
Log 3. NOISE BLANKER CIRCUIT 4. 5. 7 The noise blanker circuit is composed of Q1 through 08. Noise amplified detected by D1 and D2, and applied to the base of 04, Since the collector of G& is connected 1o the base 6f 06 and switches D6, because of detected noise, it turns ON Q6; and D6, and turns OFF DS, thus cutting off the anise. Therefore only clean signals are fad tol the S5B IF circuit. amplifier of AGC voltage for Q2 and O3 noise amplifiers. In the FM mode, this circuit does not actuate.
9. When the AGC switch s in the SLOW position, the output signal of 027 is fed to another peak: hold detector 028, The detected DC voltage charges C77 and switches Q28 ON and Q24 OFF. When the inapt signal is removed, the charged voltage of C77 is discharged ‘through: R101 ‘and: 025 is switched ON, and ‘the charged voltage'in C75 and GB1 is discharged through R85 and R96. Thus the AGC voltage is held during the time constant of C77 and R101.
When there ‘are no audio signals, rectified DC voltage from D44 and D46 is applied 1o the base of 1052, turning 1:ON.Since the collector of 052 is connected to the base of AF amplifier 049, base voltage of Q49 falls'and 049 is turned QEF thus squelch diction is: applied, and ! no audio is heard from the speaker.! At this time, signal lamp control transistor OB1 does not conduct, and so the signal lamp goes OFF. When ‘incoming signals: are received; noise is suppressed, the ‘base voltage of 0562 falls.
3. 4. 5. and the BEQ signal becomes: the ‘output. This signal is used for the: carrier in: CW operation: During CW operation; a key is connected to the base of 062, The key tums Q62 OFF during key down, therefore turning ON:O63 and the carrier ON. The output signal of 1C4 (DSB signal} is fed to the crystal filter FL1 through 083 and D7, FL1 cuts the unwanted side band of the DSB signal and the output is a Single Side Band signal. (CW signals pass through FL1 as unchanged wave forms).
L 9. 10, ANT Terminal, the more its detecting circuit characteristics are improved, but higher harmonics are caused due to Diode ‘rectification. In order to avoid this, the SWR Detecting Circuit is located at the intermediate part of the low-pass filter. D24 and D25 rectify forward and reflected power, respectively, and supply signals to the APC amplifier.
11. POWER SUPPLY CIRCUIT Regardless of whether the transceiver is switched ta the receive mode or not, power is always supplied from 3 constantly activated: source to the receiver AF amplifier, AGC, the transmitter microphone amplifier circuits and also to the CW monitor. BFO and VXQ circuits are supplied through the mode switch. This power source supplies current through: and zen er diode: D32, producing a regulated voltage of about 9.
PLL (PHASE LOCKED LOOP} UNIT 1. 2. LOCAL OSCILLATOR CIRCUIT This circuit is for the oscillation, in 100Hz steps, of the fewest two digits {0.0 ~ 0.8 KHz) of the VCO output frequency of the PLL circuit. 1t consists of 08 kHz switch, Q8 oscillator; and Q10:and Q11 frequency triples. In the range between 144MHz and 146MHz: DO turns ON and X2 is connected to Q9% base thus OB oscillates about 14.
the: range between 146MHz and 148MHz, the signal is locked in the driver unit and fed ta Pin 16 as the X signal. In this case the Kilohertz and Hundred Hertz digits are cleared 0.0, the T signal is fed to the BIRCH digit counter, which results in high speed of KHz steps fining.
7. vantage changes: in steps 1o give 100Hz step variation to the VX0 frequency. This frequency: is adjusted: coarsely by ‘Rwandan finely by is for ‘temperature compensation; TRANSMIT MUTING CIRCUIT When the PLL s unlocked; ‘pulses: with: a width proportional to the phase difference appear at Pin 40 of 1C1. These pulses are fed ta the gate of Q2; and the output from ‘the 'source 15 rectified by Db and D6 'The rectified DC voltage from D5 and D6 is applied o the base of O3, turning it ON.
The SL signal is controlled with these levels as in the truth table, shown:below. VEO SW | T/RSW | RoY pup Ny s | Selected SiM ND UP WINDUP RD UP RD UP CONTROL CIRCUIT This ‘circuit controls the X ‘signal 1o select the frequency stench of either 100HZ or SK Hz: The X ling is connected to Pin 15 of 1C1 . and ‘when the line is HIGH, the frequency steps are KHz, and when LOW; 100Hz. The B4 line is connected to the B4 cut pat of 1CT, and is HIGH in the frequency range between 146.000MHz and 147.995MHz and L.
o B8 8. POWER CIRCUIT The power circuit of the PLL consists of 1C6, 1C7 and 1G8, Icings a5V voltage regulator and supplies 1G1, 12 and 103, and the display and logic circuits of the driver unit, IC7 15 8 DC-DC converter for —8V, and supplies to the AGC circuit of the main unit. 0112 is the switch of 1C7, and urns it OFF when the main power switch is stormed OFF. FC8 is ‘an 8.2V vantage regulator and supplies other circuits in the PUL unit and also the VOO unit: through Q1 ripple filter.
2. MHz DIGIT DISPLAY TRUTH TABLE INPUT: POINT DISPLAY. Flue Lila ON ON:LHON HON ON ONi CONCHIE H ONONDAGA CLONAL 7 PHOTO:CHOPPER CIRCUIT D3 and D4 are infrared LED dices and 08 and Q0 are the photo transistors. D3 sends a continuous light source: to 08 and D4 sends it to OO, Between the diodes and the transistors is 8 windowed chopper disk which is: connected directly 1o the shaft of the tuning knob.
1G9 s 2 D type flip-flop, so'it latches the signal of the delay circuit. 169 gives a High (H) feel signal when the tuning:knob is turned clockwise, and a Low {L) level signal when the knob is turned counterclockwise. This (H} or (1) signal goes 1o Pin 5 of 1C10 slog with the signal from the ACC secret (if used], which is fad 1o Pin 6. The cutout of 1C10 Is added 1o the LS as the UP/DOWN. (UD) signal. When ‘the tuning knight 38 idem When the: tuning krill 5 turned Counterclockwise clockwise TIMING CHART.
When Pin 10 0f 108 s HIGH {RIT is turned OFF), 010 is turned ON; and the base of 01728 turned DN, Thus the rotor of RIT control R1 s grounded and the fixed voltage divided by R94 and R95 is applied to. D7 and DB in the PLL unit. When Pin 10 of 1C8 is LOW [RIT is turned ON), Q10 s turned OFF and adjustable voltage from the rotor of RIT control R1 is applied 10 DT and Din the PLL unit, and the oscillating frequency of L0, varies.
Ldo 4. DIAL LOCK CIRCUIT i the: dial Sock button is pushed. Pin 13 of 1CB goes: LOW. “Any: switch chatter is absorbed by R40 and C1. The output of 1C8 inverter is fed to Pin 11 (CK terminal) of 107, 1C7 works as a T type flip-flop and output levels are repeated every time the input is applied.
Problem: Possible Cause Solution 8. No output power o low. Output power: FIREPOWER setting 15 turned 100 far counter clockwise: {in FM made) MIC GAIN setting is too low 10558 mode) When: SSB or FM s desired, bu tithe MODE switch gin the £W position. PET: switch is not functioning due 1o improper connection of the:mic connector The anteing feed Heine is cut or shorted: Furniture "RF . POWER control clockwise | while watching . the multi-function | meter, to obtain the proper output power.
Problem Possibility Cause Solution 11.The [RE POWER control doss not function: The: MODE Defect switch s in the SSB (LIB or LSB) o1 CW position; Ag lithe SUPERPOWER T control functions in: the EM mode: only, et the switch 1o the FM position. 12.The RIT LED: goes out overt though' you: didactic depress ‘the RIT ONESELF switch to e BLOKE: The RIT s automatically turned OFF wham the Tuning knob: is rotated.
