4 practical techniques for ssb operation, Introduction, Eliminating interference (qrm) – Alinco DR-SR8 User Manual

Page 38

Chapter 2 Communications

Press and hold the [PTT] key and speak into

the microphone.
The red TX LED will be lit. The reading on
the RF meter and brightness of the TX LED
will change according to the intensity of your
voice.

NOTE:

Speaking too close to the microphone

or too loudly may increase distortion

and reduce clarity.

Release the [PTT] key to receive.

REFERENCE: Split-frequency operation, page

45.

2.4 Practical Techniques for SSB Operation

Introduction

In SSB operation, you may encounter various problems such as poor propagations and
interferences. This section explains how to use the special functions to overcome these problems.

Eliminating Interference (QRM)

1: Activating the IF SHIFT function

This function eliminates interference by shifting the ﬁ lter pass band without changing the
receive frequency.

Turn the

'IF knob clockwise or counterclockwise to lessen interference.

2: Using the ﬁ lter

Press the [FUNC] key, then press the [RF] key. “Nar” appears on the display indicating
that the narrow ﬁ lter is selected.

3: Activating the RF attenuator

When the received signal is noisy, it is possible that you are picking up another strong
signal from nearby.

Press the [RF] key to activate the attenuator to a desired level.