PRESIDENT Taylor User manual

TAYLOR

риевю епх

SERVICE MANUAL

SPECIFICATIONS

GENERAL

Channels

Frequency Range

Frequency Control

Antenna Im édance

Power Out ut

Accessories

Size (WxDxH)

Weight

TRANSMITTER

26.965 - 27.405 MHz

PLL Synthesized

50 ohm

13.8 V DC

Micro hone, Micro hone Hanger, Mounting

Bracket.

150mmx150mmX45mm

1.2 kgs

Out ut Power

Emission Ty e

Hum and Noise

Frequency Tolérance

Modulation Percentage (Peak)

Max Deviation FM

S urious Rejection

RECIEVER*

4 watts

6A3

AM 50dB

FM 45dB

0.002%

AM 100%

3 KHz

Better than -70dB

Sensitivity at 10 dB S+N/N AM 0.5uV

Sensitivity at 20 dB S+N/N FM 1.0uV

Sensitivity at 500mW audio out ut 0.5uV

Squelch Threshold 0.5uV

Squelch Tight 1000uV

Signal Meter S-9 100uV

Audio Out ut Power (max) 5 watts

Audio Out ut Power (10% Dist.) 4 watts

Selectivity 6dB down 7 KHz

Adjacent Channel Rejection 60dB

Image Rejection 75dB

S eaker Im édance 16 ohm

CONTROLS AND THEIR FUNCTIONS

1. RF POWER/ "S” METER: This meter shows the Radio Frequency ower when

transmitting and the strength of the incoming signal when recieving. A

change of the "S" unit indicates a change of 6dB in signal level. The

metering circuit is calibrated so that for 100 microvolts, the "S"

meter will read S-9.

2. CHANNEL INDICATOR: Light Emitting Diode (LED) indicates the channel

number in use.

3. PRESS TO TALK MICROPHONE: The receiver and transmitter are controlled

by the ress-to talk switch on the micro hone. The micro hone rovided

with your radio is a détachable low im édance dynamie ty e.

4. OFF/VOL.CONTROL: Turn clockwise to a ly ower to the radio and to set

the audio volume to the desired listening level.

5. SQUELCH CONTROL: This Squelch Control is rotated to eut off or

eliminate recieved background noise in the absence of an incoming

signal.

6. AM/FM SWITCH: This switch is used to select AM or FM.

7. CHANNEL SELECTOR SWITCH: This switch selects the desired channel for

transmission and réce tion.

8. ANTENNA C0NNECT0R: This female connector ermits connection of the

transmission line cable male connector (PL-259) to the transceiver.

9. POWER CORD: A ower cord is su lied with the radio.

10. EXTERNAL SPEAKER: The external s eaker jack (EXT.SP) on the rear anel

is used for remote reciever monitoring. The external s eaker should

have 8 ohms im édance. When the external s eaker is lugged in, the

internal s eaker is disconnected.

I. Test.Equipment Required

Oscilloscope (50MHz) X ower Supply X Voltmeter

Frequency Counter

ALIGNMENT OF CARRIER OŚCILIATOR

2. Alignment rocedure

STE RESET TO ADJUSTMENT REMARKS

CH : 40 Connect X Voltmeter to T -1(R62).

Mode: TX “ Adjust for 3.5V +0.1V on DC Voltmeter.

N0 Modulation

CH : 40

Mode: RX

KO Modulation

L13 Connect Oscilloscope to T -2(R8). Adjust

for maximum reading on Oscilloscope.

3. Test Equipment Connection

Form: ADJ04—M-i

ALIGNMEMXjOFt.RECEIVER-

1. Test Equipment Required

Oscilloscope (50MHz) ' DC ower Supply RF Signal Generator

AC Voltmeter 3 ohm Load

2. Alignraent rocedure

STE RESST TO ADJUSTMENT REMARKS

IVOL: Max.

SQ.: Min.

CH: 19

ANL: OFF

L4, L3,

L2 and

Connect SSG(27’. 135MHz) to J501. And

connect AC Voitmenter to EXT. S Jack(J3.)

Then adjust coils for maximum reading on

AC Voltmeter.

)

' 2 Same as Step 1 *-■ VR1 Set the level of SSG to lOOuV. Adjust

for "S-9" reading on Transceiver's Meter.

3Same as Step 1

\except

SQ: MAX. VR2 Set the level of SSG to lOOOuV. Adjust

semi-fixed resistor so that the AF output

signal is 2V.

4 Same as Step 1

except L601 . Set the level of SSC to lOOuV. Adjust for

maximam reading on AC Voltmeter.

KODE: FM

3. Test Equipment Connection

GIGM AL G EN ER ATOR TR A N SC EIV ER A F V TV M OSCILLOSCOPE

8Л

RESISTOR

Form: ADJ04-M-2

ALIGNAIENT OF TRANSMITTER

1. Test Equipment Required

Oscilloscope (5QMHz) DC ower Supply AC Volt ceter

RF ower Meter Frequency Counter Deviation Meter

50 ohc Load Audio OscilLator

2. Aligament rocedure

STE RESET ТО ADJUSTMENT REMARKS

1NO Modulation

CH: 19

Mode: AM

LII, L14

and L15 Connect Oscilloscope to T?-3(R46).

Adjust for maximum reading on

Oscilloscope.

2 ' Same as STE 1L10, Lll

and L7 Connect RF ower Meter to ANT Jack

(J501). Adjust for maximum reading

on RF ower Meter.

3Same as Step 1 L7 Adjust foc 4.0 W reading on

RF ower Meter.

4Saae as Step 1 VR3 Adjust the needle to blank zone

betueen Green and Red on Trans-

ceiver’s Meter.

5 Mode : FM

CH: 1 VR601 Set Mic Input to 30mV.

Connect Deviation Meter to ANT Jack.

Adjust for 3.5kHz Deviation.

3. Test Equipment Connection

F R E O .COUNT

Form: ADJ04-M-3

BOOI РА-031В551 РА-033

W H IH -H- AUGMENT POINTS w k w +H'

В 601 РА-166

IC6ÖI 2 /2

NJM4558D

Яв13

сею ггк

H I—VA—

0.04T/SR

1. RESISTANCE VALUES ARESHOWN IN OHMS

UNLESS OTHERW1SE NOTEO.

(K* KILO OHM ' M * MEC OHM)

2. RESISTOR WATTAGES ARE I/8W UNLESS

OTHERWISE NOTEO.

3. CAPACITANCE VALUES ARE INDICATEO

N MICROFARAOS UNLESS OTHERWISE

NOTEO. (P* MICRO - MICROFARAO)

O C S I 4 * . 1 » O f tt W S , 1 T Uh Э С * h'„>

U T - 2 8 4 J

v Г ł . •. .

5 7 . 1 1 . 1 5 5 7 . 1 1 . 1 6 T Y L O R

S K O M N O

Aß**0, 9 * S C H E M T ! С D I G R

( • * * ' * • 4 s c ;

t 1 L“ г и у ь r

-* т

- + RX

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