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K1EL
from the spacing, so the resulting speed is not changed. The difference between weighting and keying
compensation is that compensation is independent of speed, so if 10 mSec of key compensation is selected,
10 mSec will be always be added regardless of speed. So be careful at high speeds with large values of
keying compensation since dits and dahs may run together with no spacing at all.
5:AutoSpac - Enable/Disable Autospace Mode (applies to paddle input only)
When autospace is enabled and you pause for more than 1.5 dit times after 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, a wordspace is 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 spacing makes it easier to copy very
fast speeds since it provides extra space to separate words.
7:PdlSamp - Paddle Sample Time Adjustment
This adjusts the delay from the start of a dit or dah to when K45 latches 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 operator could inadvertently send an extra dit or dah. If the delay is
too long the next dit or dah could be missed. A setting slightly less than default is usually the best for most
users. 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, then both dit and dah latches are disabled.
8:PdlHang - Set Transmit PTT Hang Delay Time (Paddle Hang)
A description of PTT can be found on page 21. Hang delay is a special tail delay that is specific to paddle
input. It is proportional to sending speed so that it will always hold PTT between letters. Since this time is
different between users, there are four different delay profiles:
HangTime = 1: wait 1 wordspace + 1 dit before ending PTT
HangTime = 2: wait 1 wordspace + 2 dits before ending PTT
HangTime = 4: wait 1 wordspace + 4 dits before ending PTT
HangTime = 8: wait 1 wordspace + 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 by Tail delay.
K45 User's Manual – Rev B.0
K45 CW Keyboard and Reader Manual
nn
Figure 23 – Compensation Timing
3/8/2023
Letter R without compensation
Letter R with compensation
K45B
Page 26
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