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Garmin SL40 User Manual

Page 23

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Specifications

Apollo SL40 Installation Manual

17

Microphone input ..................................... Two inputs, standard carbon or dynamic mic with

integrated preamp providing minimum 70mv rms
into 1000

: load

Modulation capability............................... 85% with 100mv to 1000mv rms microphone input

at 1000 Hz

Audio frequency distortion ....................... < 10% at 85% modulation at 350 to 2500 Hz

Audio frequency response ........................ < 4db variation with 350 to 2500 Hz, 85%

modulation

Carrier noise level..................................... > 35 dB down

Sidetone output ......................................... up to 280mW into 100

:, 120mW into 500:

Duty cycle ................................................. 100%

Stuck mic time-out.................................... 35 second time-out, reverts to receive

I

NTERCOM

P

ERFORMANCE

Microphone input ..................................... Two inputs, standard carbon or dynamic mic with

integrated preamp providing minimum 70mv rms
into 1000

: load

Headphone audio output level .................. 280 mW into 100

:, 120 mW into 500:

AGC characteristic.................................... output varies < 3 dB with input of 100mv rms to

1000mv rms

C

ONTROL

I

NPUTS

Transmit key ............................................. Input pulled low to ground to enable the transmitter

Intercom select.......................................... Input pulled low to ground to enable the intercom

function

A

NTENNA

R

EQUIREMENTS

The Apollo SL40 requires an antenna meeting the following specifications.

Standard 50

: vertically polarized antenna with a VSWR < 2.5:1.

S

ERIAL

I

NTERFACE

RS-232 ...................................................... Defined in Appendix E - Serial Interface

Specifications