You will need a SSB receiver for 80m and 10m, or a spectrum analyzer for this frequency
range. The instructions are given for a frequency translation of -12khz. If you want to
use a different translation frequency, it is recommended to run the procedure in the
desired translation mode. While the overall approach is the same, frequencies will
change, so if in doubt, we recommend to stick to -12kHz translation.
Preparation
1.
Set the frequency translation to -12khz
2.
Set power to 0.5W
3.
Connect dummy load or attenuator, if nothing else is available, use an antenna.
4.
The mcHF is always used to
transmit
the signal
in USB mode
!
5.
The second receiver is always used to
receive
the signal
in LSB mode
!
TX 80m calibration (translated mode)
1.
Switch mcHF to 80m band.
2.
Switch to
USB
mode. To switch to USB from LSB use a long press on the Mode
button.
3.
Set the mcHF frequency to 3.624.000 Hz.
4.
Start "Tune". You should now be able to listen to the generated signal on a
second receiver (LSB: Dial Frequency of second receiver 3.625.500, USB:
3.624.000). It should have a good strength (around S9).
5.
Tune second receiver to 3.600.000 Hz,
LSB
(!!).
6.
You should be able to hear a much weaker tone. Maybe you have to change the
frequency of second re/- 500 Hz for getting the tone in reasonable
frequency. A spectrum analyzer or IQ receiver will show the weak signal around
3.599.250 Hz.
7.
Enter the "Configuration Menu", go to the "TX IQ Phase (80m)" setting.
8.
Now change the value so that the tone can no longer be heard or is minimal. The
direction to change values depends on your mcHF, e.g. you may need to set a
positive or a negative value.
9.
Once you found the minimum using the "TX IQ Phase (80m)", and you still hear
something, use the "TX IQ Balance (80m)" setting to further reduce the tone.
10.
You may vary both settings alternatively slightly to find the best setting.
TX 10m calibration (translated mode)
