>>>have been playing with simulation of the 15 meter spur problem.? It seems that?
a series LC trap on the filter output might work but only if the trap has very low?
resistance and if it is exactly on the spur frequency.? Even then LTSpice simulations?
indicate that a couple of db might be lost on the upper end of 15M.? When I added?
a few ohms to the trap to make it broader it caused loss that extended well into the?
ham band.??<<<
Arv,
Consider a series connected parallel tuned trap (High L, low C).
I tried a series trap and the amp went into oscillation at the trap tuned frequency.
I quickly abandoned that approach.
Allison
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