Receiver Alignment Setup; Receiver Alignment Points - Yaesu FT-411 Technical Supplement

Set up the test equipment as shown above for
receiver alignment.
With the transceiver and
both tuned to the center of coverage
MHz), inject a 1 kHz tone with ±3.5 kHz devi­
ation at 40 dBu to the antenna jack.
TlOl
Adjust through
for maximum S-meter indication, reducing the
injection level if more than four meter segments
turn on. Repeat these
generator level is 0.2 u V
SIN AD.
RF
signal generator
(
1 45 or 146
T103
on the Mother Board
adjustments until the
l
or less for 2dB

RECEIVER ALIGNMENT POINTS

RF Signal
ANT
Generator

RECEIVER ALIGNMENT SETUP

- 15 -
EAR
Oscillosc ope
AF
Millivoltmeter
SINAD Meter
Speaker
or
8-ohm load resistor
Regulated
12V
PSU
T
102