TCR-1002 HF RECEIVER
Rev. A
– 6/4/2012
10
The available steps are:
1 Hz 2 Hz 5 Hz 10 Hz 20 Hz 50 Hz
100 Hz 200 Hz 500 Hz 1 kHz 2 kHz 5 kHz
10 kHz 20 kHz 50 kHz 100 kHz
4.5 AGC MODE
There are 3 predefined AGC settings and 3 user settings.
The available selections are:
FAST MEDIUM SLOW USER 1 USER 2 USER 3
Attack Time is the rate at which the RF gain decreases when a signal increases and the AGC
has the gain set too high. The Attack Time is set in dB/ms.
Decay Time is the rate at which the AGC circuit increases the RF gain when a signal
decreases in level. Decay Time is in dB/sec.
Hang Time is the time period where the AGC circuit maintains gain at the same level after a
decrease in signal has occurred. Hang Time is in seconds, with 0.1 second steps.
Decay time is usually much slower than attack time. The combination of these variables allows
the user to select a setting where the gain does not "pump" at a syllabic rate, especially when
in SSB or CW Modes. The user settings can accommodate values of attack and decay chosen
by the user.
4.6 BW
There are 48 user selectable bandwidths available, limited by mode in some cases. The
bandwidth is obtained by a combination of RF and audio DSP filters. The 7 different RF
bandwidths are selected automatically to be compatible with the audio frequency selected on
the display. The bandwidth is selected by the encoder or the UP and DOWN buttons. The
current setting will be saved on power-down for the mode the receiver is currently in. AM, FM,
CW and SSB (USB or LSB). USB and LSB bandwidths are not stored separately.
AM Bandwidths
600 Hz 800 Hz 1.0 kHz 1.2 kHz 1.4 kHz 1.6 kHz 1.8 kHz 2.0 kHz 2.2 kHz
2.4 kHz 2.8 kHz 3.0 kHz 3.2 kHz 3.6 kHz 4.0 kHz 5.0 kHz 6.0 kHz 7.0 kHz
8.0 kHz 9.0 kHz 10 kHz
USB/LSB/CW Bandwidths
600 Hz 800 Hz 1.0 kHz 1.2 kHz 1.4 kHz 1.6 kHz 1.8 kHz 2.0 kHz 2.2 kHz
2.4 kHz 2.6 kHz 2.8 kHz 3.0 kHz 3.5 kHz 4.0 kHz
