Remember When 6V6 Kit – Additional Comments

The 6V6 slatboard 80 and 40 meter kit Pastime Projects offers continues  to sell very well.  If you require a crystal or two for this transmitter,  please contact us at  pastimeprojects(at)yahoo(dot)com.  We have in stock or access to additional crystals not listed in our web site

40 meter operation of this transmitter can be accomplished with either 40 meter or 80 meter crystals.  We need to go in our lab and research this further.  As I recall we found that we could add a 220 pf mica capacitor IN SERIES with the one supplied in the kit that is used to resonate the cathode coil.  I believe the cathode coil as designed resonates at or near the 80 meter band.  That is fine for 80 meter operation with an 80 meter crystals.  It is also the recommended way to operate on 40 meters with an 80 meter crystals according to the original 1940 designers.  We have found that a 40 meter crystal will work better on 40 meters IF the cathode coil resonates on 40 meters. To do this, simply add the 220 pf capacitor in SERIES with the one already in the cathode circuit.  We know that capacitance in series reduces the capacitance, and therefore the circuit LC resonant frequency.. Again we have to research this further..  If this is too confusing or doesn’t work,  contact us.  We always want your Remember When Kit to operate at its best.  And again, work on your kit WITH ALL POWER OFF!  73 es BCNU  Glenn NN8G


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