Richard Clark wrote:
"If you want to crow about your EH/POS DX contacts 1 mile out, they
better be in the direction of that nearby standard quarterwave antenna."

All that needs to be done to take the standard quarterwave antenna out
of the picture is to open-circuit the vertical to ground. That makes it
resonant at about 2X the frequency where it is a 1/2-wave at resonance
and capable of absorbing energy which it reradiates as a parasitic
element. This may not be so good for the 2nd harmonic in some direction.

Best regards, Richard Harrison, KB5WZI