On 4/7/2021 7:38 PM, Dave Cole wrote: > Is this true, and if so, why? No. With the shield disconnected, the antenna is different -- if there's an effective choke at the top, it's now a long wire ending at the choke, because the shield and the center are capacity-coupled together. And if there's no choke at the top, it's a top-loaded long wire. 73, Jim K9YC