K1EL K45 CW Modem Manual K45
K-45 User’s Manual - Rev A
6/6/2021
Page 23
Letter R without compensation
Letter R with compensation
nn
Figure 18 – Compensation Timing
5:AutoSpac - Enable/Disable Autospace Mode (applies to paddle input only)
When autospace is enabled and you pause for more than one dit time between a dit or dah the K45 will
interpret this as a letter-space and will not send the next dit or dah until a full letter-space time has been met.
The normal letter-space is 3 dit spaces but this can be adjusted by the Letterspace parameter command.
The K45 has a paddle event memory so that you can enter dits or dahs during the inter-letter space and the
K45 will send them as they were entered. With a little practice, autospace will help you to send properly
spaced Morse code.
6:WordSpac - Word Spacing Control
Normally, the K45 spaces words by seven dit times. This can be adjusted in a range from 6 to 12 dit times. A
tighter space speeds up exchanges which is helpful in a contest. Longer word space times aids in copying at
very fast speeds where it provides extra space to separate words.
7:PdlSamp - Paddle Sample Time Adjustment (applies to paddle input only)
This adjusts the delay from the start of a dit or dah to when K45 starts looking for the next paddle press.
Normally the K45 waits one dit time before latching a new dit or dah. This delay can be adjusted to be
greater or less than one dit time. If the delay is too short the keyer could send an extra dit or dah. If the
delay is too long it slows you down because you must hold the paddle longer. Faster operators report a
setting slightly less than default is more pleasing. The delay is calculated with this formula:
DELAY = (SAMPLE ADJUST*DIT_TIME)/50 where Sample Adjust is between 50 and 150%
At Sample Adjust = 50 = One Half Dit Time
At Sample Adjust = 100 = One Dit Time (Factory Default)
At Sample Adjust = 150 = One and One Half Dit Time
Special Case: If Sample Adjust is set to zero, the dit and dah latches are disabled.
8:PdlHang - Set Transmit PTT Hang Delay Time (Paddle Hang)
The K45 provides a transmitter PTT output that can be used to switch a transmitter over to transmit mode in
advance of actual CW keying. You have control over the time delay between when PTT is asserted and
when CW keying will start. Hang is a PTT delay that is proportional to sending speed. The delay begins after
paddle sending stops. You can select one of four delays:
HangTime = 0: wait 1 wor 1 dit before ending PTT
HangTime = 2: wait 1 wor 2 dits before ending PTT
HangTime = 4: wait 1 wor 4 dits before ending PTT
HangTime = 8: wait 1 wor 8 dits before ending PTT
Hang delay is different than PTT tail delay in that it is proportional to code speed while PTT delay is a
primarily a fixed delay time. This means you don’t have to tweak the PTT delay every time you change
sending speed. Remember that Hang only applies to CW sent by paddle. PTT for CW sent by message is
governed only by Tail delay.
Configuration Menu #2
Figure 19 – Configuration Menu #2
