Gerard,
I had the same problem when I started with the kit. I replaced C4 & C5 with 18pf and the frequency went up to about the middle of the wspr band. Replace C5 as well as C4.
Also, I have found that very small changes in circuit voltage will alter the frequency that the circuit oscillates at. In my kit, a change from 4.8v to 5 will move the frequency upward by about 20 or 30htz.?
I run the logic side of the board with the power supplied by a small plug in power supply with an LM 7805 regulator controlling the voltage to the logic chips. The PA is powered directly by the plug in supply at about 6.2 volts. When the PA switches on, the voltage on the logic chips drops by about 0.1volts and the frequency falls a little. This can be seen on ARGO as the line moves down a little. If I run the input voltage on the PA at 9 volts, this does not happen at the logic chips side of the LM7805 and the frequency is more stable.
However - I am sure that if you chage c5 for a lower value, your frequency will rise.
Bonne chance.
de G0BZB - Op Tony
