microHAM microKEYER Manual page 32

Some tips from Geoff Anderson, G3NPA:
TIP: If you have achieved the correct settings for the transmit levels (with audio
compression disabled), changing from a single tone to the PSK idle should make transmit
power drop by at least 50% as observed on an RMS or average reading meter. This
change in power is correct. If you do NOT see a 50% (or more) change, you are probably
over driving the radio. Please note that some radios have inbuilt power meters which give
a PEAK reading and therefore the change in level discussed above will not be observed.
TIP: Don't fall into the trap of thinking that because the transmit signal looks good on the
waterfall that your actual signal is OK. All the waterfall is showing during transmit is the
local audio and NOT the transmitted signal.
RX RECORDING/DIGITAL (logger audio recording or digital decode levels).
VU meter: this "stacked LED" display shows the audio level into
the analog to digital controller. Note, the display is active
only if a sample rate is selected.
microKEYER shows one or two sliders for the sound card line in –
depending on the sound card. Keep the sliders at about 80% and
use the "Computer" pot on the front panel for adjustment. When
correctly adjusted, the input signal should never show RED.
Sampling: sets the sample rate used for the RX level displays.
Because of the of the way the Windows sound system
handles multiple access to the sound card, it is best to turn
off the level displays (set Sampling to off) when they are
not in use.
RX Mixer: this button opens the Windows Record (Input) Mixer
for the selected sound card.
GET ID: this button will retrieve the name and number of the
sound card used for receive functions (digital decoding or off air
recording). The name can be used to verify that the correct
sound card has been selected. The number can be used to
configure software that identifies sound cards only by number.
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