Write-Output with no BOM

If I run a command like this:

Write-Output March > a.txt

I get this result:

        U+FEFF    M       U+004D          a       U+0061          r       U+0072    c       U+0063          h       U+0068         U+000D       \n      U+000A       

I do not want the BOM. I tried different actions, like this:

$OutputEncoding = [System.Text.UTF8Encoding]::new($false)$PSDefaultParameterValues['*:Encoding'] = 'utf8'[Console]::InputEncoding = [System.Text.UTF8Encoding]::new($false)[Console]::OutputEncoding = [System.Text.UTF8Encoding]::new($false)

but none of them seem to address the issue. Note I am using PowerShell 5.1. Idid see some similar questions, but not quite the same issue as this, as theywere dealing with piping and external commands.