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
40
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
LI
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

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В 601 РА-166
IC6ÖI 2 /2
NJM4558D
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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)
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S K O M N O
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