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PHASE 6
Band Switching Components and Connections
6-1. Install c34, 56 pF. NOTE: C34 is the only capacitor
installed for C34-C42, all of which provide for putting
capacitance in parallel with an inductor.
Install the following nine .01 μF mylar film bypass capacitors,
using whatever insertion/soldering/trimming sequence seems
most efficient to you:
6-2. C20, .01 μF mylar film capacitor, marked 103
6-3. C21, "
6-4. C22, "
6-5. C23, "
6-6. C24, .01 μF mylar film capacitor, marked 103
6-7. C25, "
6-8. C26, "
6-9. C27, "
6-10. C28, "
Install the following nine 1N4148 part # 28001 diodes, using
whatever insertion/soldering/trimming procedure seems most
efficient to you:
6-11. PIN diode D1, with cathode oriented per board outline.
6-12. PIN diode D2
6-13. PIN diode D3
6-14. PIN diode D4 [probably installed in Testing step 4-31]
6-15. PIN diode D5, with cathode oriented per board outline.
6-16. PIN diode D6
6-17. PIN diode D7
6-18. PIN diode D8
6-19. PIN diode D9
6-20. COIL INSTALLATION: correct installation order of
inductors L1-L9 are important to the intended tuning coverage of
your receiver. Any mistakes in the following procedure will
result in mixups in frequency band selection. The inductors
directly determine the tuning ranges of all bandswitch selections.
There is no right or wrong direction for inserting the inductors,
but a consistent pattern is helpful for double-checking your work.
i.e., orient the first two bands of all 9 coils in the same direction,
one way or the other.
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[probably installed in Testing Step 4-2]
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1253 - 36
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