It's been a good few years since I looked at Bob Heil's stuff but there were two choices for the mic inserts. HC-5 was the normal frequency response insert and the HC-4 was the DX insert - a lot sharper sounding audio.
The process of applying for a Voter Authority Certificate online is quite straightforward . As long as you are registered to vote, you only need a recent photograph and your National Insurance number. You can apply online here, I appreciate that not everyone can set some time aside for this, but if you do try please share any obstacles or difficulties you encounter.
This message popped up after an upgrade but it's still working (•‿•)
I can't even remember if I subscribed to r/archlinux over there, I've eradicated my account now so it doesn't really matter. The important bits are (1) I'm an Arch user, amd64 and arm7hf mainly. (2) I'm subbed to this community. May it live long and prosper!