The KD1JV Tri-Bander CW transceiver
Hendricks QRP kits
www.qrpkits.com
Table of Contents
Operation:................................................................2
Power on/off: .....................................................2
Band selection: ..................................................2
Tuning: ..............................................................2
Tuning Limits: ..............................................2
RIT:................................................................2
Keyer operation:.................................................2
Changing Keyer speed:..................................2
Message memories:.......................................2
Storing a message:.........................................3
To send a stored message:.............................3
Message pause and stop.................................3
Setting keyer Iambic A or B mode:...............3
Straight key mode:.............................................3
Tune up mode:....................................................3
Speaker or headphones:......................................4
Circuit description:..................................................4
Microprocessor controller and DDS VFO:........4
Receiver: ............................................................4
Transmitter: .......................................................5
Parts List.................................................................6
Assembly Instructions:............................................7
Power up and test:.................................................18
Specifications:
● Any three ham bands, 80, 60, 40, 30, 20, 17 or 15 meters - choose band mix at time of order.
● 5 watts output on all bands with 13.8V supply
● Built in Iambic keyer with 5 to 40 wpm code speed, selectable Iambic A or B modes and two 63 character
message memories.
● Receiver sensitivity, 0.2 uV MSD
● DDS VFO for rock steady stability with 50 Hz and 200 Hz tuning rates
● Easy to read four digit LED display with leading zero suppression.
● Rotary knob tuning
● RIT (receive incremental tuning)
● Four IF crystals for excellent selectivity and opposite side band rejection
● 600 Hz audio filter
● Audio derived AGC
● Small size, 6” wide, 1.5” tall and 4” deep.
● Light weight, 12 ounces.
● Modest supply current requirements, 90 ma on receive (no signal) and 600 to 800 ma on transmit at 5W out
(current depends on band, higher bands draw more current)
● Supply range : 13.8 V max, 8 V min.
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