Kenwood TS-590S manual Measurement Conditions

1 RECEPTION

Measurement Conditions:

Receive	14.200 MHz
Frequency
Mode	CW
Pass bandwidth	500 Hz
PRE AMP	OFF

The abscissa axis shows the distance from the interfering signal. For example, it represents that at the point of 10 kHz the receive frequency is 14.200 MHz and two interfering signals of 14.210 MHz and 14.220 MHz are given.

The orange line shows the result of TS-590S and the gray line shows the result of TS-480S.

In the event the frequency separation is greater than 20 kHz, the dynamic ranges of both transceivers exceed 105 dB; however, as the separation becomes smaller (the interfering signals come closer to the receive frequency), the dynamic range of TS-480S with conventional MCFs is decreasing. As the graph of pass bandwidth shows, this results due to the difference of attenuation at the roofing filter.

Note: In the receive frequency and its adjacent band, the measurement at the level of “3 dB higher than the ordinary noise level” may not be feasible due to influence of the noise generated from its local oscillator. Instead, the level, which has been reached to S5 with the measurement by an S-meter, is predetermined as the reference level, and the level is converted to the same level as the predetermined level, namely “3 dB higher than the ordinary noise level”, and then appears on the graph of pass bandwidth. For comparison, both transceivers were measured using the same measuring method. The outcome is an example and does not warrant the performance of the product.

TS-590S

CONTENTS

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