- 16 -
ITEM U.U.T.
SETTING
ADJUST
POINT
MEASUREMENT
AM Sensitivity Set radio to CH 19 AM RX mode.
Set RF GAIN Fully Clockwise.
Set SQ Fully Counter Clockwise.
Set VOL Control at 2 o’clock.
Set NB/ANL switch to OFF position.
Set TONE Fully Clockwise.
Set CLARIFIER Control to 12 o’clock.
Connect RF SG to antenna jack
Frequency 27.185 MHz, 1uV. Mod 30%.
L2,L3,L5,L6,
L7,L8,L9,L10
Audio Output > 2V
S/N > 10 dB.
Set radio to CH 40 AM RX mode.
RF SG setting 27.405 MHz.
Set radio to CH 1 AM RX mode.
RF SG setting 26.965 MHz.
L5,L6
For Balance Between
CH 1 and CH 40.
USB Sensitivity Set radio to CH19 USB RX mode.
Set VOL Control Fully Clockwise.
RF SG setting 27.186 MHz, 0.5uV. Mod off.
L11,L12
Audio Output
>
2V
S/N > 10dB.
LSB Sensitivity Set radio to CH19 LSB RX mode.
Set VOL Control Fully Clockwise.
RF SG setting 27.184 MHz, 0.5uV. Mod off.
L11,L12
Audio Output
>
2V
S/N >10dB.
NB Adjust
Set radio to CH 18 AM RX mode
RF SG setting 27.185 MHz, 1000uV. Mod off.
Set NB/OFF switch to ON position.
Connect Multimeter to TP1 (D2 cathode).
L1
DC Voltage to max.
( > 2.0V )
AM Squelch
Set radio to CH 19 AM RX mode.
Set SQ Control Fully Clockwise.
RF SG setting 27.185 MHz, 20mV. Mod 30%.
VR4
Adjust very slowly
until squelch just
closes.
SSB Squelch
Set radio to CH 19 USB RX mode.
Set SQ Control Fully Clockwise.
RF SG setting 27.186 MHz, 20 mV. Mod off.
VR3
Adjust very slowly
until squelch just
closes
AM S-Meter
Set radio to CH 19 AM RX mode.
RF SG setting 27.185 MHz, 100uV. Mod 30%.
VR1
For a reading of “9”
on the “S” scale.
SSB S-Meter
Set radio to CH 19 USB RX mode.
RF SG setting 27.186 MHz, 100uV. Mod off.
VR2
For a reading of “9”
on the “S” scale
Summary of Contents for DX 2547
Page 12: ...12...
Page 13: ...13...
Page 17: ...17 Figure 4 1 Transmitter test setup Figure 4 2 Receiver test setup...
Page 20: ...20...
Page 23: ...23 PART LIST...
Page 27: ...27...
Page 31: ...31...
Page 39: ...39 DX 2547 MAIN PCB...
