YouKits EK-1A User manual

EK-1A（2014）3 Band CW QRP Transceiver
Operating manual
Specification:
Size:107*47*103mm
Weight: about 300g (without battery pack)
Working voltage:9-15VDC。
Current consumption: RX= 80-90mA TX=0.8A（12VDC）
Working Frequency
RX:5.9-16MHz
TX: 7.0-7.3MHz、10.1-10.15MHz、14.0-14.35MHz。
IF DDS: 60MHz
Display: 0802 LCD
Power output: 4-5W（12VDC）
Sidetone:700Hz
Keyer: builtin speed adjustable 5-40wpm
Freq MEM: 10
Connection

External power supply
Any 9-15V DC voltage or battery can be connect to (12VDC).It has a polarity protection
circuit.
Internal battery power supply
You can use any battery pack around 12V like our 18650 lithium battery pack. Must use
special charger for lithium battery, must not connect regular DC external power supply when
lithium battery pack installed.
Headphones
Stereo headset will be connected to the headphone port(PHONE), impedance 8-32 ohm.
Antenna
Any resonant antenna can be connected directly to the antenna(ANT) with a BNC connector,
for non-resonant antenna you will need to insert an antenna tuner.
Key/Paddle
The EK-1A has an automatic function that determines what type of key is being used and is
initiated on power up. Will show up “Paddle” or “Hand KEY” on screen. Connect ring to paddle
dash or straight key's ground. Connect to sleeve paddle's ground. Tie ring and sleeve
together for straight key. Must plug the straight key first before power up to activate.
Connect to Paddle dot or
straight key’s contactor
Connect to paddle dash or
straight key’s ground
Connect to paddle’s ground
or straight key’s ground

Operating
Power switch and Gain
This switch is at left side, counter clockwise tuning to the end to shut off the
power, clockwise turning to power it on, GAIN up to the end.
Tune/Step
Change frequency in VFO mode, change memory location in Memory mode.
V/M/SAV
Click this button to alternate between Memory mode(MEM)and VFO mode, the LCD screen
will show the “M-*” or “V-*” (* The figures for 0-9). In Memory Mode the Tuning knob is used
to change memory locations. In VFO Mode the Tuning knob is used to change the frequency.
Press the V/M/SAV button for 2 seconds (the LCD screen will display SAV), the
current frequency and current mode will be stored in the Memory Location selected.

RIT/SET button
Click this button to enter or exit RIT function. “R-” will be displayed to the middle of the
frequency display.
When in the RIT mode, turning the tuning knob clockwise will raise the frequency (as
indicated by the up arrow). turning the tuning knob counter-clockwise will lower the frequency
(as indicated by the down arrow).
Press and hold the RIT/MOD for 2 seconds. This will allow you to change the Keyer speed.
Current keyer speed will show on LCD, turning the TUNE/STEP to adjust. Press and hold the
RIT/MOD for 2 seconds for each change.
ATT button
ATT is at back panel of EK1A, press ATT while the strong signal received and attenuation the
front end signal.

Change the Frequency Tuning Steps
Pressing the tuning knob lightly will change the tuning step between 10Hz, 100Hz and 1KHz. When
changing the step, the related step position displaying on screen blink twice.
If you Pressing the tuning knob for 2 seconds, the tuning step will be 100KHz. (in the RIT mode, will be
10Hz and 100Hz).
If STEP changed in MEM mode, then it will automatically change to VFO mode
Transmitting
When transmitting on the frequency of: 7.0-7.3MHz, 10.1-10.15MHz(MOD needed) and
14.0-14.35MHz, the EK-1A will display TX at middle of LCD. Will show “--” when out of the Ham bands.
Battery life indicator
At front upper corner of display, show “full” if battery voltage higher than 11.5V, showing “empty” when around
9V
Youkits
2014-12.06