YACK Operation Manual
Version MY181210
L - ULTIMATIC MODE Sets the keyer into ULTIMATIC ode. In Ulti atic ode always the last paddle to
be touched is repeated indefinitely when paddles are squeezed
X - PADDLE SWAP DIT and DAH paddles are swapped.
F - FARNSWORTH PAUSE Allows setting of an extended inter-character pause in all playback odes which
akes fast keying easier to understand. Note that this of course only influences RECEPTION, not
TRANSMISSION. If you desire Farnsworth ode in trans ission, please anually pause during characters.
COMMANDS – TRANSMITTING AND TONE
I - TX INVERT This function toggles whether the "active" level on the keyer output is positive or negative.
This setting is dependent on any additional attached keying circuits or radios. Nor ally this co and is left
alone.
K - TX DISABLE Toggles the setting of the TX keyer output. In default state the keyer switches the trans it
line when it is in keyer ode. Toggling this setting enables or disables that function. NOTE: Keying is always
off in Co and ode.
S - -SIDETONE The side tone oscillator setting is toggled (ON -> OFF or OFF -> ON). NOTE: This setting is
only of relevance for regular keying ode. Side tone is always on in co and ode.
COMMANDS – FEATURES
C - CALLSIGN TRAINER The keyer plays a generated 2x2 call signs (side tone only) at the current WPM
setting. The call signs are then entered back using the ia bic key. If it is repeated correctly, "R" is played and
the next call sign is given. If a istake was sensed, the error pro-sign (8 dots) is sounded and the current call
sign is repeated again for the user to try once ore. If nothing is keyed for 10 seconds, the keyer returns to
co and ode.
Z - ADVANCED TRAINER Si ilar to the training ode above except on each successful entry the speed is
increased by 1WPM. An unsuccessful entry reduces the speed by 1WPM. Pressing the co and button will
ter inate the training, return the keyer to the original WPM speed, and give statistics of speed at end of session,
nu ber of calls sent, and nu ber of calls correct. Do not press co and ode while the keyer is sending. The
last call sign sent is not counted.
N - BEACON MODE The keyer responds with "N" after which a nu ber between 0 and 9999 can be keyed.
After a 5 second ti eout the keyer responds by repeating the nu ber and 'R'. Once the keyer returns to keyer
ode, the content of essage buffer 2 is repeated in intervals of the essage length plus N seconds. The setting
is preserved in EEPROM so the chip can be used as a fox hunt keyer. Returning to co and ode and entering
an interval of 0 (or none at all) stops beacon ode. Keyer will respond with 'R'.
Y - FOXHUNT MODE When toggling this co and the trans itter output will stay keyed down the entire
ti e a e ory is played. Toggling again will resu e the e ories back into on-off-on keying ode. This
co and works along with the Beacon co and to allow a setup, such as an FM trans itter, to be used as a
beacon or fox hunting box.
