Uniden PRO520E (UT-317A)
Documentation Project
CBTricks.com

SPECIFICATIONS

CB AM TRANSCEIVER MODEL: PRO 520e (UT-317A)

GENERAL

1. Channels:

 40

2. Frequency Range:

26. 965 MHz to 27.405 MHz

3. Semiconductors:

12 Transistors, 33 Diodes, 7 IC's
1-19 Segments Hybrid Type LED

4. Crystal Oscillators:

1

5. Microphone

Electret Condenser Type

6. Speaker:

16 ohm 3 W Max

7. Antenna Connector:

M-Type

8. Jacks & Connectors:

Mic 5pin Din
EXT SP 3.5mm
PA SP 3.5mm

9. Controls:

Channel Selector, Volume /Power ON-OFF,
Squelch, RF Gain, CH9/OFF, PA/GB, ANL/OFF

10. LED Bar Meter:

HF Output Poker, Signal Strength,

11. Illumination Indicators (LED):

Channel Readout, TX

12. Cabinet Size:

W: 116 mm
H: 36 mm
D:166.5 mm

13. Weight: 0.75 kg

14. Accessories:

Microphone, Microphone Hanger, and Mounting Bracket with Screws

 

MEASURMENT CONDITIONS

1. Standard DC Power:

13.8V DC

2. Test Temperature:

25°C ±5°C

3. Standard Audio Frequency:

1kHz

4. Standard RF Input:

1mV

5. Standard Ref. Modulation:

30%

6. Standard Ref. Audio Output:

0. 5W

7. Standard Ref. Audio Load:

8 ohm Resistive

8. Antenna Impedance:

50ohm

9. Measurement Channel

19

10. Standard Method of Measurement:

EIA RS-382 ( ISS : 8-26-86 )

NOTE:    Limit specs. Are for measurement on all channels.

RECEIVER (ANL OFF)

ITEMS

UNIT

Nominal

LIMIT

1. Usable Sensitivity (10dB S/N)

uV

0.5

1

2. Max. Sensitivity

uV

0.5

1

3. RF Gain Range

dB 

30

20

4. Audio Output @ 10% THD

W

4.0

2.0

5. Max. Audio Output Power

W

7.0

3.0

6. Max. S/N @ 1mV

dB

35

25

7. Squelch Sensitivity:

Threshold

uV

0.5

1.0

Tight

uV

1000

250 to 4000

8. AGC Figure of Merit
(50 mV for 10 dB Change)

dB

85

75

9. Audio Response
(Refer to 1kHz) @ 6 dB down

Lower
Hz
300
400 Max
Upper

Hz

2000

1600 Mim

10. Detector Linearity 1mV,
30% Mod.

%THD

4.0

7.0

11. ANL Performance

dB

4

7

12. Adjacent Ch. Rejection

dB

60

45

13. "S" Indicator
(4th LED just ON) (No Mod.)

uV

1000

500 Mim

14. Spurious Resp.

 

 

 

- 22.734MHz (Ch 40)
dB
50
40
All other freqs.

dB

55

45

15. Image Rejection Ratio (900 kHz)

dB

80

60

16. IF Rejection Ratio 1ST & 2ND

dB

70
60

17. 1/2 i-f Rejection Ratio

dB

55

45

18. OsciLlator Drop Out Voltage

V

9.0

11.0

19. Public Address Output
@ 10%THD

W

3.0

2.0

20. Battery Drain

 

 

 

- No Signal
mA
250
350

- Max. Audio

mA

1400

1700

 

TRANSMITTER

ITEMS

UNIT

Nominal

LIMIT

1. Carrier Power - No Mod.

W

4.0

3.6 to 4.4

2. Frequency Tolerance after 5 mm.

%

±0. 002
±0. 003

3. Spurious Harmonic Emission

dB

-70

-60

4. Battery Drain

- No Mod
mA
850
1300

- 80% Mod.

mA

1300

1700

5. Modulation Freq. Resp (1kHz, 0dB Ref)

 
 
 

300Hz

dB

-6

C to -12

2500Hz

dB

-6

C to -12

6. Microphone Sensitivity
 
 
 

50% Mod.

mV

7

15

7. ANC Range 50 to 100% Mod.

dB

36

30

8. Transmit Hum & Noise

dB

50

40

9. Relative Power Meter (No Mod.)

4th just ON
3 Mim

10. Transmit Distortion (1kHz, 80% Mod.)

%

4.0

7.0

 

OVERALL PERFORMANCE

1. Output Protection: Shall meet for 5 minutes for all VSWR'S (around the Smith Chart) of 20:1 without damage.

2. Output stability of all VSWR'S (around the Smith Chart) of up to 5:1 under continuous operation of a duty cycle of 5 minutes transmitting, and 1 minute receiving.

3. Reverse Polarity Protection: Shall have reverse polarity protection and be operable with positive and negative grounding.

4. Standard Operating Temperature: -30șC to +50șC

5. Storage Temperature: -40șC to +70șC

6. Electrostatic Discharge Protection: All external case and component parts shall withstand the application of 15kV ESD without causing failure or malfunction to the unit.

Test Conditions - Probe:   
              150 pF with 500 ohm in series
              Temp: 25șC