Software description
Main window
11 CWP button
By clicking this button an additional window opens, which allows to tune different
parameters of CW keying and to make simple QSO in a text mode.
Note: Button is active only in CW-U and CW-L modes.
12 Ext. button
By clicking this button an additional window with parameters for operating
external devices opens.
13 PRS button
On/off switch for the preselector.
The transceiver ZS-1 has high selective band pass filters for the amateur radio
bands. Out of the amateur radio bands no preselector is used; all settings are
chosen automatically according to the selected frequency.
We recommend to keep the preselector turned on, to avoid overload caused by
strong out-of-band signals. Switching off the preselector could be useful for
measurement purposes or when using spectrum bandwidths exceeding 2 MHz.
14 Attenuator
Dropdown list for the attenuator.
To achieve optimum performance without
overload, choose the attenuator value according to the current reception conditions
and signal levels. A manual selection of the attenuator value is not possible while
using the High Frequency Automatic Gain Control (HF AGC).
15 HF AGC
Dropdown list for the HF AGC. This AGC analyzes the broadband HF signal and
regulates the amplification coefficient according to the existing signal levels.
HF AGC Off – the HF AGC system is switched off. The operator chooses a suitable
attenuation manually.
HF AGC Min – the HF AGC system uses an algorithm, which evaluates the noise
level in selected band and switches the attenuator in a way that ensures the best
possible signal/noise ratio. This setting usually will bring the best signal quality .
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