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efhw_tuner_assy_090110.pdf
QRPGuys EFHW 40m-15m Mini Tuner Assembly Manual
First, familiarize yourself with the parts and check for all the components. If a part is missing, please
contact
us
and
we
wi
ll
send
one.
You
must
use
qrpguy[email protected] to request a part.
Parts List
1 – QRPGuys EFHW Tuner PCB
1 – Slide switch – DPDT
1 – C1, polyvaricon, w/shaft and mtg. hardware, 1 long, 2 short metric screws, and nylon spacer 3/8”L
1 - T50-6 toroid core (yellow)
1 – FT37-43 toroid core (black)
1 – 48” of 26AWG magnet wire for the toroids
1 – Medium size control knob
1 - BNC PCB connector
2 – 4mm x 30mm long SS Phillips screw
4 – 4mm nut
2 – 4mm lock washer
2 – 4mm SS wing nut
2 – 4-40 x 1/2” long nylon screw
2 – 4-40 nylon nut
2 – 3/8” diameter #4 nylon washer
2 - 1/8”diameter x 1/2” long vinyl Caplug
1 – C2, .1uF mono capacitor, marked 104
1 – D1, Red LED w/clear lens
1 – R4, 470 ohm resistor (yellow-violet-brown-gold)
3 – R1-3, 51 ohm 2W power resistor (green-brown-black-gold, or value is printed on the component)
1 – D2, 1N4148 signal diode, sm. glass, w/black band on one end
1 – 8mm round self-adhesive rubber foot
