Coupler Through (Off, Rcvd, Diff) - Furuno FS-1575 Service Manual

Ssb radiotelephone

Hide thumbs Also See for FS-1575:

Table of Contents

9. COUPLER THROUGH (OFF, RCVD, DIFF)

The Submenu-3 "COUPLER THROUGH" is used to select whether or not pass a

received signal through the matching circuit of the Antenna coupler.

Allows a received signal to pass through the matching circuit.

When receiving a frequency higher than transmission frequency, the received

signal may attenuate to cause a drop in receiver sensitivity.

Serves as a "through circuit" that allows no received signal to pass through the

tuned circuit.

Allows no received signal to pass through the tuned circuit if the transmission

frequency is different from the reception frequency.

A through circuit is established on the following conditions:

1) Reception frequencies are equal to or less than 1.6 MHz;

2) Transmission and reception frequencies are not more than 4 MHz and not

the same (Simplex communication); and

3) Transmission and reception frequencies are not less than 4 MHz and the

reception frequencies are not less than 1.2 MHz away from the

transmission frequencies.

CONFIDENTIAL (internal use only)

This confidential document is used only by FURUNO authorized persons.

It is strictly prohibited to reproduce the document in whole or in part without prior written permission of FURUNO.

Fig. 4.7.1 Antenna Coupler Through Circuit

Fs-2575 Fs-5075