High Power Radios

7-9

 

 

Transmitter

Specification

VHF1

VHF2

 

UHF2

UHF3

 

 

 

 

 

 

Power Output

25-45 W

 

 

25-40 W

 

 

 

 

 

 

 

Conducted/Radiated

 

 

-26 dBm

 

Emissions:

 

 

 

 

 

 

 

 

 

 

 

Audio Response: (from 6

 

 

 

 

 

dB/oct. Pre-Emphasis, 300

 

TIA603 and CEPT

 

to 3000Hz)

 

 

 

 

 

 

 

 

 

 

 

Tx Audio Distortion

 

 

< 3%

 

 

 

 

 

 

Modulation Limiting:

 

±2.5 kHz @ 12.5 kHz

 

 

 

±4.0 kHz @ 20 kHz

 

 

 

±5.0 kHz @ 25 kHz

 

 

 

 

 

 

 

FM Hum and Noise:

-40 dB@12.5 kHz

 

-35 dB@12.5 kHz

 

-45 dB@25 kHz

 

-40 dB@25 kHz

 

 

 

 

 

 

Receiver

Specification

VHF1

 

VHF2

 

UHF2

 

UHF3

 

 

 

 

 

 

 

Sensitivity (12 dB SINAD):

 

 

0.35 V @ 12.5 kHz

 

 

 

 

 

0.3 V @ 25 kHz

 

 

 

 

 

 

 

 

Intermodulation:

65 dB@12.5 kHz

 

60 dB@12.5 kHz

 

75 dB@25 kHz

 

70 dB@25 kHz

 

 

 

 

 

 

Adjacent Channel

65 dB @ 12.5 kHz

 

60 dB @ 12.5 kHz

Selectivity:

75 dB @ 25 kHz

 

70 dB @ 25 kHz

 

 

 

 

 

 

 

 

Spurious Response

 

75 dB

 

 

70 dB

 

 

 

 

 

 

 

Rated Audio Power

 

 

4 W (typ.) Internal

 

 

 

 

 

7.5 W @ 5 % External

 

 

 

 

 

 

 

 

 

 

Audio Distortion

 

 

 

< 5 %

 

 

 

 

 

 

 

 

Hum and Noise:

-40 dB @ 12.5 kHz

 

-35 dB @ 12.5 kHz

 

-45 dB @ 25 kHz

 

-40 dB @ 25 kHz

 

 

 

 

 

 

 

Audio Response

 

 

TIA603 and CEPT

 

 

 

 

 

 

 

 

 

Conducted Spurious

 

 

-57 dBm <1 Ghz

 

 

Emission per FCC Part 15:

 

 

-47 dBm >1 Ghz

 

 

 

 

 

 

 

 

 

 

Specifications subject to change without notice. All electrical specifications and methods refer to EIA/TIA 603 standards.

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Image 63
Nikon CM200 service manual 35 ∝V @ 12.5 kHz ∝V @ 25 kHz