PRESIDENT Mc KINLEY US 12/24 Service Manual

Mc KINLEY US

12/24

SERVICE MANUAL

-TECNNICAL CHARACTERITICS

Mc Kinley US 12/24

1-GENERAL:

-40 channels

(from 26,965Mhz to 27,405Mhz)

-7 Weather channels

CH1 162,550Mhz/CH2 162,400Mhz/CH3 162,475Mhz/CH4 162,425Mhz
CH5 162,450Mhz/CH6 162,500Mhz/CH7 162,525Mhz

-Channel step

-10Khz

-Class of emission

-AM(A3E)/USB LSB(J3E)

-Power supply

-13,8V/27,6V/ From10,8V to 31,2V

-Antenna impedance

-50

-Dimensions (in mm)

-172(W) x 150(D) x 52(H)

-Weight

-1Kg

2-TRANSMISSION:

-Frequency allowance

-±200Hz

-Carrier Power

-4W RMS AM / 12W PEP SSB

-Modulation

± 90%

-Transmission interference

-Inferior to -60dBc

-Audio frequency response

-From 300Hz to 3Khz

-Emitted power in the adjacent channel

-Inferior to 20µW

-Microphone sensitivity

-Inferior to 3mV

-Current drain

-2,2A (in transmission mode with modulation)

-Modulated signal distortion

-Inferior to 2%

3-RECEPTION:

-Maximum sensitivity at 20dB sinad

-0,7µV(-110dBm) AM / 0,28µV(-118dBm)USB LSB

-Audio frequency response

-From 300Hz to 3Khz

-Adjacent channel selectivity

-Superior to 60dB

-Frequency image rejection

-Superior to 60dB

-Intermodulation response

-Superior to 54dB

-Maximum audio power

-3W

-Squelch sensitivity

-Threshold 0,2µV(-120dBm) / Tight 1mV(-47dBm)

-Current drain

-300mA nominal / 1000mA maximu

ALIGNMENT PROCEDURE

(Mc KINLEY US 12/24)

* VCO/PLL PORTION

- Alignment procedure

- Test points

- Frequencies chart

* TRANSMITTER

- Alignment procedure

- Test points

* RECEIVER

- Alignment procedure

- Test points

Test equipement required

Frequency counter 200 Mhz HF Generator
D

C Volmeter

B

F Volmeter

D

istortiometer

H

F Volmeter

Wattm

eter - Dummy load

Osilloscope
FM linear detector Load 8 Ω
AF generator Sinad m

eter

Conditions of Measurements on HF Generator

Reception

AM mode: Level - 107 dBm Frequency 1 Khz with 60% of modulation.

USB/LSB mode: Level - 107 dBm

FM mode: Level - 107 dBm Frequency 1 Khz with 3Khz of deviation.

Transmission

Frequency1 Khz 30mV.

ALIGNMENT VCO/PLL

- Alignment procedure (13,8V/27,6V)

STEP CONDITION ADJUSTMENT REMARKS OF ADJUSTMENT

1 AM

RX mode

Channel 20

L308

Fine + coarse center position
Connect a frequency counter to TP304,
adjust L308 to reach 37,900MHz ± 20Hz

2 USB

RX mode

Channel 20

Fine + coarse center position
Connect a frequency counter to TP304,
And check 37,9025MHz ± 20Hz

3 LSB

RX mode

Channel 20

Fine + coarse center position
Connect a frequency counter to TP304,
And check 37,8975MHz ± 20Hz

4 USB

TX mode

Channel 20

RT302 Fine + coarse center position

Connect a frequency counter to TP304,
adjust RT302 to reach 37,9025MHz ±
20Hz

5 AM

RX mode

Channel 40

Fine + coarse center position
Connect a voltmeter to TP 303,
and check 2,8V±0,2V.

6 AM

RX mode

Channel 1

Fine + coarse center position
Connect a voltmeter to TP 303,
and check 2,6V±0,2V.

7 USB

RX mode

Channel 20

L307 Fine + coarse center position

Connect a frequency counter to TP305,
adjust L307 to reach 10,6975MHz ± 20Hz

8 LSB

RX mode

Channel 20

L305 Fine + coarse center position

Connect a frequency counter to TP305,
adjust L305 to reach 10,6925MHz ± 20Hz

9 AM

TX mode

Channel 20

L306 Fine + coarse center position

Connect a frequency counter to TP305,
adjust L306 to reach 10,695MHz ± 20Hz

10

AM

RX mode

Channel 20

RT301 Fine + coarse center position

Connect a frequency counter to TP600,
adjust RT301 to reach 10,100MHz ±
20Hz

- FREQUENCY LIST

CH C

hannels

Freq

(MHz)

VCO(TP304)

AM Freq

(MHz)

1 26,965 37,660
2 26,975 37,670
3 26,985 37,680
4 27,005 37,700
5 27,015 37,710
6 27,025 37,720
7 27,035 37,730
8 27,055 37,750

9 27,065 37,760
10 27,075 37,770
11 27,085 37,780
12 27,105 37,800
13 27,115 37,810
14 27,125 37,820
15 27,135 37,830
16 27,155 37,850
17 27,165 37,860
18 27,175 37,870
19 27,185 37,880
20 27,205 37,900
21 27,215 37,910
22 27,225 37,930
23 27,255 37,950
24 27,235 37,930
25 27,245 37,940
26 27,265 37,960
27 27,275 37,970
28 27,285 37,980
29 27,295 37,990
30 27,305 38,000
31 27,315 38,010
32 27,325 38,020
33 27,335 38,030
34 27,345 38,040
35 27,355 38,050
36 27,365 38,060
37 27,375 38,070
38 27,385 38,080
39 27,395 38,090
40 27,405 38,100

ALIGNMENT VCO/PLL

TP 303

TP 304

TR 302

TP 305

TP 600

Q417

RT 301

ALIGNMENT TRANSMITTER

- Alignment procedure (13,8V/27,6V)

-Connect a DC amperemeter between the power supply and the transceiver.

STEP CONDITION ADJUSTMENT REMARKS OF ADJUSTMENT

1 USB

Channel 20

TX mode

without

modulation

RT204 CCW
RT205 CCW

Check 0,65A±10mA on the amperemeter

2 USB

Channel 20

TX mode

without

modulation

RT205 Adjust RT205 to add

0,1A±10mA=0,75A±10mA

3 USB

Channel 20

TX mode

without

modulation

RT204 Adjust RT204 to add

0,1A±10mA=0,85A±10mA

4 USB

Channel 20

TX mode

with modulation

0,4KHz&2,5KHz

(adjust audio

frequency level to

become 0,5WPEP)

L213
L214
L215

Adjust L213, L214, L215 to reach the
maximum power on the RF power meter.

5

AM

Channel 20

TX mode

without

mo

dulation

L207

RT202

1-Set RT 202 to center position
2-Adjust L207 to maximum reading on
the RF power meter

6 USB

Channel 20

TX mode

with modulation

0,4KHz&2,5KHz

(30mV RMS)

RT202 Adjust RT202 to reach

11Wpep ± 0,5W on the RF power
meter.

7 USB

Channel 20

TX mode

without modulation

RT207 Connect RF probe to TP 201.

Adjust RT 207 to minimum reading
on oscilloscope.

8 AM

Channel 20

TX mode

without modulation

RT203 Adjust RT203 to reach 3,8W ±

0,1W on the RF power meter.

9

AM

Channel 20

TX mode

1,25Khz 30mV

RT206 Adjust RT206

to 90% ± 3% modulation

10 AM

Channel 20

TX mode

without modulation

RT201 Adjust RT201

to reach SRF 9 displayed
on the SRF meter.

ALIGNMENT TRANSMITTER

RT 206

RT 202

RT 204

RT 205

RT 201

RT 207

RT 203

ALIGNMENT RECEIVER

- Alignment procedure (13,8V/27,6V)

STEP CONDITION ADJUSTMENT REMARKS OF ADJUSTMENT

1 AM

Channel 20

Middle volume level.

No squelch active

RF gain: MAX

Fine Coarse: Center

NB/ANL/HiCut: OFF

L1-L2-L3-L5-L6 Connect HF generator (27,205Mhz) to

jack antenna adjusted at (-112dBm
1Khz mod 60%), connect sinad meter
to jack EXT speaker and adjust coils
(L1-L2-L3-L5-L6) for maximum
sensitivity  20dB sinad.

2 AM

Channel 20

Middle volume level.

Squelch: MAX(CW)

RF gain: MAX

Fine Coarse: Center

NB/ANL/HiCut: OFF

RT2 Connect HF generator (27,205Mhz) to

jack antenna adjusted at (-47dBm
1KHz mod 60%) and adjust RT2 so
that the signal is audible .

3 USB

Channel 20

Middle volume level.

Squelch: MAX(CW)

RF gain: MAX

Fine Coarse: Center

NB/ANL/HiCut: OFF

RT1 Connect HF generator (27,206Mhz) to

jack antenna adjusted at (-47dBm no
modulation) and adjust RT1 so that the
signal is audible.

4 AM

Channel 20

Middle volume level.

Squelch: CCW

ASC: ON

RF gain: MAX

Fine Coarse: Center

NB/ANL/HiCut: OFF

RT101 Connect HF generator (27,205Mhz) to

jack antenna adjusted at (-113dBm
1KHz mod 60%) and adjust RT101 so
that the signal is audible .

5 AM

Channel 20

Middle volume level.

No squelch active

RF gain: MAX

Fine Coarse: Center

NB/ANL/HiCut: OFF

C

onnect HF generator (27,205Mhz) to
jack antenna adjusted at (-67dBm
± 4dBm no modulation) and check
S9 on the SRF meter.

6 Weather channel 6

162,500Mhz

Middle volume level

L506 Connect HF generator to jack antenna

adjusted at (-47dBm 1Khz mod 3Khz
deviation), connect a voltmeter to
TP501 and adjust L506 to reach
4V±0,1V.

6 Weather channel 6

162,500Mhz

Middle volume level

Connect HF generator to jack antenna
adjusted at (-117dBm 1Khz mod 3Khz
deviation), connect sinad meter to jack
EXT speaker and check that the
sensitivity is ≥ 20dB ± 2dB.

7 Weather channel 6

162,500Mhz

Middle volume level

RT 501 Connect HF generator to jack antenna

adjusted at (-120dBm 1Khz mod 3Khz
deviation), and adjust RT501 so that
the signal is audible.

ALIGNMENT RECEIVER

L 506

RT 501

RT 2

RT 1

RT 101

TP 501

Mc KINLEY US

12/24

BLOC DIAGRAM

ASC AGC

27MHz

10.695MHｚ 10.695MHz

10.695MHz

455KHｚ

X303

10.695MHz 455kHz

RX

D303,306

IC301

IC302 TX

FRONT MIC

6 12V

PD1

5 GND

4 RX AUDIO

3 PTT/UP/DN

2 SP GND

J591 1 MIC

VOX MIC. JACK

POWER

INPUT

COM 0-3

MASTER MCU IC601 SLAVE MCU IC404

CH SW

Q203

SSB SW

Q413

PA MIC AMP

Q414

PA MUTE

Q407

BEEP ATT

Q401

BEEP MUTE

Q411

TB MUTE

Q209

COMP DET

IC204

MIC AMP

Q202

AM

CUR CONT

BPF

SWSWSW

WX TRAP

GRN

BLU

PD

Q606,607

DIMMER

LCD

SEG 0-51

Q201 SSB

ALC DET

Q602

Q604

Q603

RED

Q3,Q4,Q5

NOISE

AMP

D6

NOISE

DET

Q14,Q21

PULSE

AMP

IC603

EEPROM

Q591

FINAL

Q592
DRV

BUFFE

R

Q593

PRE DRV

÷

2048

Q208

TX BUFFER

Q304 VCO

BUFFER

IC2

SQ AMP

D1,D2

RF ATTQ1RF AMP

BPF

Q2

1st Mixer

Q15,Q16

SQ

SENS SW

FT2

MCF

D18

AGC DET

D17

AM DET

Q9

IF AMP

1st

IC1

AGC AMP

2nd

D222,223
TX MIXER

FT1

MCF

Q307

CARRIER

OSC

D410
ANTI

VOX DET

Q18

AM AGC

SW

D101
ASC

NOISE DET

Q22

AM MUTE

Q10

IF AMP

3rd

D19,Q23

ANL

FREQ.

SELECT

IC3

ASC

NOISE AMP

Q6

NB AGC

AMP

BPF

Q8

NB GATEQ72nd Mixer

FT2

Ceramic

IC1

AGC AMP

1st

Q11

IF AMP

2nd

SW

Q17

SSB AGC

SW

Q12

HI CUT

Q439,440
VOX AMP

D411,412
VOX DET

Q12

IF AMP

4th

IC2

SUM AMP

Q13

RX MUTE

Q101
ASC

GATE

Q403

AF MUTE

Q13

SSB DET

Q303, D303

CB VCO

IC202

BAL

MOD.

Q217

COMP DC

AMP

Q215

Buffer

LPF

Q412

INHIBIT

IC401

SP AMP

Q14

SSB MUTE

IC501

2nd Mixer

FT502

BPF

IC501

IF LMT AMP

IC501
FMDET

Q406

RL DRV

IC501

SQ AMP

IC501

NOISE AMP

D502

NOISE

DET

Q301

WX VCO

÷N1

Q306

REF OSC

Q503

1050Hz

BPF

Q504
WAVE
FORM

Q212

SSB

MOD MUTE

Q302 VCO

BUFFER

÷N

REF

OSC

X601,　Q601
CLOCK OSC

(10.16MHz)

IC602
RESET

D501

ANT SW

Q501

LNA

Q502

1st Mixer

FT501

BPF

DIRECTIONAL

COUPLER

LPF L203,204

FINAL
MTCH

IC201

2CH

DC AMP

LPF

LPF

Q435

MIC SEL

Q436,437

MIC SEL

Q204,Q205

V LIMIT

Q433,441

DC/DC SW

Q434

MIC SEL

COMP ATT

Q214

Q218

MIC ATT

÷

R

Qxxx
WXINV

Q417

CLOCK OSC

(10.100MHz)

Q421～432, D408,409

MODE SW

Q415,416
5V REGU

Q418,419,420

8V REGU

IC405
DCDC
CONV

IC402

2.5V REF

IC403
RESET

Q220

TBEEP MUTE

Q25

RX TONE

Q409

PWM BUFF-1

IC205 2/2

PWM BUFF-2

IC205 1/2

PWM BUFF-3

Q219
TB ATT

Q210

BAL SW

Q505

WX MUTE

SSB_RX

AM

SSB_RX

TX

SSB_RX

TX

AM

AM

SSB_RX

ASC GATE

ANL

SSB

AM

WXMUT

RMUT

VOLUME

CB PLL DAT

SRF

CBSQ

SQ

CONT

SSB

AM

SSB SQ

AM/FM SQ

AGC

VT8

RF G

MC G

USB

LSB

AM

SSB_RX

VT8

IDLE

PTT

NC

F

R

REV

FWD

HICUT

VXSNS

MIC
BIAS

MIC
BIAS

JKDET

SRF

PWR SW

V13I

V12

V8

V5

SQVOL

V12

CBSQ

ANL

PLL CLK

SPCONT

PASP

HICUT

P-CONT

ANTVX

P-DIM

9/19

SRF

CHUP

SQVOL

ANTVX

ALTSW

SWM

EEP DAT

EEP CLK

ASC GATE

P_KE

BEEP

NB

CHDN

WXSQ

BEEP

AM

MSEL

MICMUT

ALC

1050Hz

JK DET

BACK LIGHT FOR LCD/KNOBS

FWD

VXSNS

REV

PRESIDENT Mckinley USA BLOCK DIAGRAM

IDLE

27MHz

PLL DAT

VOLMUT

TONE

V13I

MODSIG

NB

AMC

AMC

5kHz

SPCONT

TXC

D7,9

D8,21

Q305

D8,11

D12,13

USB TX/RX:10.6975MHz

LSB TX/RX:10.6925MHz

AM TX :10.6975MHz

ANT

LD

CLARIFIER

TX F ADJ

1050Hz

WXSQ

PAAMP

EXT SP

INT SP

PA SP

PASP

ALTSW

A

MSEL

LD

U

WX PLL DAT

CB

PA

RL401

X301

10.100MHz

X302

10.2417MHz

RED

GRN
BLU

・F/MEM

CB/PA

WEATHER

ANL/NB/HIC

CLK

VL4

DAT

DAT

EN

PLL LE CB

PLL LE WX

RMUT
TBMUT

RMUT

PAAMP

WXMUT

VOLH

VOLH

ALC

SSB

VR8

PC

PC

AM

TB 1-4

AM

L

TBMUT

RXC

10.100MHz

10.100MHz

VT8

VR8

SSBRX

SSB

AM

USB

LSB

VR8

/WXMUT

/WXMUT

TONE

MICMUT

TB LEVEL

BEEP

LEVEL

TB LEVEL

PW1

PW2

PW3

RF G

MIC G

PC

TONE

Mc KINLEY US

12/24

SCHEMATIC DIAGRAM

PRESIDENT

PRESIDENT

PRESIDENT

ASC

ASC

OUT

ASC IN

ASC adjust