ETA WSC-3 KT

What does narrowband consist of?

AM plain, FM plain, FM secure

What does wide and consist of?

AM secure, link 11

Where does AM modulation occurs?

Transmitter

Where does FM modulation occur?

Synthesizer

What does the 1A1A2 voltage regulator do?

Converts AC to all necessary DC voltages for the AN/WSC-3

What condition does the BITE summing circuit check for?

0v condition

What voltages are present in standby?

+28 Vdc, +225 vdc, +68vdc

What does the 1A1A25 standard interface do?

Routes audio

What dos the transmitter keying delay do?

Allows 1A1A8 to stabilize 4 ms and 8ms when keying/unkeying handset

What does the 1A1A6 translator bypass do?

Passes XMIT enable and XMIT RF during AM/FM transmitter also generating 70 MHz BITE test signal

What does the mike switch do?

Enables local handset

What does the clipper NB do?

Prevents over modulation

What does the slow/fast switch do?

Control the AM and FM switches

What does the 1A1A15 am detector do?

Convert 2nd IF to audio in AM receive

What does the blanking switch do?

Protects against over modulation

What does the 1A1A21 T/R switch do?

Allows the WSC-3 to transmit and receive using a single antenna

What does the 1A1A18 receiver front end do?

Converts received RF into 1st IF by mixing RF with 1st LO

What signal disables the 1A1A18 during transmit?

Keyline

What signal disables the 1A1A18 during BITE test?

BITE disable

What does the 1A1A17 blanking module do?

Converts 1st IF into 2nd LO by mixing IF with 2nd LO

What does the 1A1A16 IF amplifier do?

Provides a 65db gain (amplification)

What does the 1A1A14 FM detector do?

Convert 2nd IF to audio in FM receive

What does the 1A1W27J9 internal standard corrector do?

Allows you to measure 5 MHz reference from 1A1A23

What is the output power for AM?

30 watts

What is the output power for FM?

0-100 watts

What is the frequency range of the WSC-3?

225.000-399.975 MHz

How many preset channels are there?

20

The An/WSC-3 is what type of transceiver?

LOS (line of sight)

What switches are used for all BITE tests?

S5 and s6

What switches are used for BITE tests 10, 11, and 12?

S5, s6 and s7

How much power does the s6 carrier in indicator require to eliminate?

At least 1 watt

Malfunction light will illuminate when which BITES fail?

BITE 1 and 4

What switch enables RT unit front panel to control the radio?

S3 local

What switch enables control box and external equipment to control the radio?

S3 remote

What switch enables 1A1A20 preset module?

S4 preset

What switch enables manual freq select switch 1A1s14?

S4 man

What does blanking do?

Protect against High levels of RF interference