EA3GCY EGV-40, Инструкция по сборке

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EGV-40 CW QRP Transceiver Page 18
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Crystals
Install X1 to X7.
X1, X2, and X3 are part of the CW filter, X4 is the RX BFO crystal, and X7 is the oscillator for the TX
mixer. These crystals have been hand picked (have handwritten numbers on their body) to have the
same resonating frequency, in order to obtain the best filter quality. The X5 and X6 pair are the VXO
crystals.
The crystal housing should not touch the board, place them slightly separated from the board. 0,5-1 mm
(less than 1/16 in) may be sufficient.
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Toko shielded coils (cans)
T1, T2, T3 y T4 are Toko “5u3“ cans (Toko KANK3334). RF transformers for the bandpass filters Make
sure their body lay flat against the PCB.
You may need extra heat to solder the shield tabs.