FreeBytes RadioKit-120 Manual de montaje y funcionamiento - Página 6
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in it's correct place.
TESTING
Now it is time to check the functionality of your new QRP transceiver. Connect
an appropriate antenna or dummy load at the antenna terminals of the
transceiver. Connect a Morse key and an earphone or small speaker to the
appropriate pins located on the board and finally connect a 9V battery on the
9V clip. If there are no signs of smoke or overheating of any component
proceed to the next step. If on the other hand you see smoke or feel excessive
heat on any of the components remove power and recheck the placement of
components and all the soldering joints and connections. Supposing that
everything is in order tune a ham radio receiver in CW mode at or near the
crystal's frequency. You should hear the carrier produced by the oscillator. Key
the transceiver and watch the receivers S-Meter. You should see the signal
strength increase since when keyed the transceiver amplifies the oscillators
signal. Listen to the audio from the earphone of the speaker. If you have
connected a good antenna then you should hear the bands noise or other CW
signals from fellow ham radio operators. If everything checks OK then you are
ready to have your first QSO's with your new home build transceiver.
RadiØKit-120 parts list
Part
Value
C1
120pF
C2
68pF
C3
56pF
C4
33nF
C5
4.7nF
C6
820pF
C7
820pF
C8
100nF
C9
10uF
C10
10uF
C11
10uF
C12
6-70 pF Variable Capacitor
C13
33pF
D1
1N914
IC1
LM386N-1
L1
10uH
L2
47uH
L3
3.9uH
L4
0.15uH
L5
0.15uH
R1
47k
R2
1.5k
R3
33k
R4
10k
R5
560 Ohm
T1
2N2222A
T2
2N3866
Markings
121
680
56
333
472
821
821
104
33
Brown, Black, Black, Silver
Yellow, Purple, Black, Silver
Orange, White, Gold, Silver
Brown, Green, Silver,
Brown, Green, Silver,
Yellow, Purple, Black, Red, Brown
Brown, Green, Black, Brown, Brown
Orange, Orange, Black, Red, Brown
Brown, Black, Black, Red, Brown
Green, Blue, Black, Black, Brown
Black
Black