"RHF" wrote
You may wish to consider moving the Feed-Point from the Center of
Two Equal Arms to an Off-Center Feed-Point with a Short-Arm of 38%
and a Long-Arm of 62% of the Total Length of the Antenna. This
type 'configuration' of Wire Antenna is called a "WINDOM" Antenna.

RHF: Windom style antennas are transmitting gimmicks that use the vertical
component of the antenna as an added radiator for wider band coverage than a
dipole (without a tuner that is) would otherwise have. No windom antenna has
any added receive benefits whatsoever. I would say it has no place in SWL at
all for that matter, there being many easier to install and general coverage
receive antennas available.

best regards,

Jack