Two suggestions coming through over twitter:
A good start is to reduce your reciever's gain as far as possible.
Hopefully you can snuff out the antenna's rear lobe that way. Headphones really help there too. https://t.co/9Eg4gpHVly
— Faunatech Austbat (@FtechAustbat) June 5, 2019
sometimes it helps to put your body behind the antenna at about waist height. Does that make sense?
— Rob Appleby (@wildspyrob) June 4, 2019