Note
Assembled only.
The K45 replaced the K44 and is a further refinement of the K -series product line which started with the K20 in 1997. It incorporates a CW reader and has both USB keyboard and USB host interfaces. Two separate CW output ports are provided that can key almost any transmitter. Due to part availability issues, the K45’s logic board was eventually redesigned to revision B. With the exception of a different USB interface IC (CH340) the revision B board is functionally equivalent to the revision A board.
The K45 is housed in an all-metal chassis with an eighty character LCD display. A slanted face on the K45 enclosure presents the display for comfortable viewing. A rotary encoder /push switch provides user input.
The unit is powered by a USB power source such as a USB charger, USB battery, or USB port on a PC or laptop. The K45 draws low current, about 150 mA, so a standard phone charger will work fine.
Features
• WinKeyer mode allows the K45 to connect to a PC logging or contest application
• 4 Line by 20 character LCD display with adjustable backlight and contrast.
• Multi-function status bar display
• Separate receive and transmit display windows with scrolling and optional word wrap
• Real time transmit progress window can be displayed instantly by hot key
• USB Type A connector for use with a standard wired or wireless USB keyboard
• Mini-USB connector for connection to a host PC or power source
• 1/8-inch audio jack for CW reader input with adjustable gain, spacing, threshold, and noise filter
• 1/8-inch stereo key output jack provides two separate optically isolated outputs
• Keying outputs can be configured as two separate keying outputs or a single output with PTT
• Two optically isolated Solid State relay outputs can key up to +/- 350 volts at 120 mA
• 1/8-inch iambic or single lever paddle input that also supports straight key input
• Rotary encoder input with integral push switch
• On board sidetone speaker with adjustable volume and pitch
• ESD input protection and RFI suppression on all connectors
• Transmit keying speed range of 5 to 99 WPM.
• DSP based CW Reader speed operates from 7 to 60 WPM
• Two complete user setups each with message and configuration storage
• Twelve messages of 120 characters each for each user
• Iambic A, B, and Ultimatic paddle modes supported
• Adjustable letterspace and wordspace, keying weight, compensation, and dit/dah ratio
• Adjustable PTT lead-in, tail, and paddle hang times
• Firmware can be upgraded over USB
• Support included for accessory sinewave sidetone board. (user add on)
• User interface can be exported to a PC application (K45 Display)
LCD Display
A high quality 20 by 4 LCD character display is used. The characters are large, well lit, and very easy to read. By employing an easy to use scrolling and windowing design, the display is used efficiently, and provides the user with many viewing options
CW Reader Specifications
– Automatic and fast speed locking
– Decode from 10 WPM to 40+ WPM
– 6 Pole Bandpass AF filter
– Ability to lock transmit speed to receive speed
– Fixed lock frequency at 725 Hz
– Adjustable inter-letter spacing
– Adjustable Gain and Noise Filtering
– 5 element LED tuning display
