IQ32 SDR TRANSCEIVER OPERATIONS MANUAL
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Keyer Operation
Touching the
Key Mode
button
displays the 5 options for setting
the internal keyer, Figure 56.
•
0=Straight
– this is the
traditional straight key set-
ting. Closing the key turns
the transmitter on and re-
leasing the key turns the
transmitter off.
•
1=Iambic_A
– In this
mode, dit and dah dura-
tions are controlled by the
setting of the
CW Speed
function. The proper dit
dah ratio is 1 to 3. Closing
both the dit and dah pad-
dles produces an alternat-
ing series of dits and dahs. Releasing both paddles completes the last dit or dah and
terminates the series.
•
2=Iambic_B
– This mode, is like Iambic_A with one exception. If both paddles are
closed, an alternating series of dits and dahs are produced. When both paddles are re-
leased, one more dit or dah element is sent, maintain the alternating sequence.
•
3=Weight Dah
– This is similar to Iambic_B but using the
CW Weight
function, the
length of a dah may be varied from the proper 1:3 relationship. The adjustment range is
7 (0.7 x the duration) to 15 (1.5 x the duration). For example: at 10 words per minute a
dit is 120ms duration and a dah is 360ms. A setting of 10 (1.0) maintains this proper re-
lationship. If the weight is set to 8 (0.8), the dah duration is changed to 288ms. Similarly,
if the weight is changed to 12 (1.2), the dah duration becomes 432ms. This mode emu-
lates a semi-
automatic “bug” key.
•
4=Weight Dit/Dah - This is similar to Iambic_B but using the
CW Weight
function, the
length of a dit and a dah may be varied from the proper 1:3 relationship. The adjustment
range is 7 (0.7 x the duration) to 15 (1.5 x the duration). For example: at 10 words per
minute a dit is 120ms duration and a dah is 360ms. A setting of 10 (1.0) maintains this
proper relationship. If the weight is set to 8 (0.8), the dit duration is changed to 96ms
and the dah duration is changed to 288ms. Similarly, if the weight is changed to 12 (1.2),
the dit duration is 144ms and the dah duration becomes 432ms. This mode emulates a
WinKeyer key.
Figure 56: Keyer Modes
