Uniden
PRO500D (UT-317J)
Documentation Project
CBTricks.com
ALIGIMENT OF PLL PORTION
Test Equipment Required
|
a. |
Oscilloscope (0-50MHz) |
|
b. |
DC Power Supply (13.8V) |
|
c. |
DC Voltmeter (by maximum, 100K ohm/V) |
Alignment Procedure
|
STEP |
PRESET TO |
ADJUSTMENT |
REMARKS |
|
1 |
TX
Mode |
L702 |
Connect
DC Voltmeter to TP1 (Lead of R77). |
|
2 |
RX
Mode |
L701 |
Sane as step 1. |
* Note MIC Signal Line of Dummy MIC requires electrolytic condenser due to MIC Jack J502's No. 1 pin added DC Voltage.
TEST EQUIPMENT CONNECTION
ALIGNMENT OF RECEIVER PORTION
Test Equipment Required
|
a. |
RF
Signal Generator (27 MHz Band, 1000 Hz, |
|
b. |
AF VTVM |
|
c. |
Oscilloscope (0 50MHz) |
|
d. |
Dummy Load (8 ohm, 5 watts, resistive (General Output Power)) |
|
e. |
DC Power Supply (13.8 V) |
| f. | DC Voltmeter |
|
g. |
Attenuator 0db=0.5uV |
Alignment Procedure
|
STEP |
PRESET TO |
ADJUSIMENT |
REMARKS |
|
1 |
RX
Mode |
L1,
L2, |
Connect RF SSG to ANT Connector (J501) and set it 27.185MHz. Connect AF VTVM to EXT. SPK. Jack (J3). Adjust coils for maximum reading on AF VTVM. |
| 2 | CH19 No Modulation |
VR3
|
Set the RF Signal Generator to 1000uV output level. Adjust VR3 so that 4th digit of LED meter of the unit just illuminates. |
|
3 |
CH19
|
VR1 |
Set the RF Signal Generator to 1000uV output level. Adjust VR1 so that squelch just breaks. |
TEST EQUIPMENT CONNECTION
Disclaimer: Although the greatest care has been taken while compiling these documents,
we cannot guarantee that the instructions will work on every radio presented.