The rules are pretty clear to me and haven't changed in the close to 30 years I've been licensed.
Identification rules have changed in various ways since I was first licensed, for example in about 1977 the requirement to identify as mobile or portable went away. About the same time (may have been the same set of rule changes, I forget) the requirement to include your actual area was removed, so a 2 station in 6 land did not have to identify as /6. A rule change I have NEVER liked.
I would have to go back to my original 60’s study guides to find more changes, but there have been some. None related to the time between IDs that I can remember
No requirement to ID everyone in round table, or say "FOR ID" when giving a call sign. Every 10 minutes, or at the end of a series of transmissions.
“No requirement” does not mean not a good idea or not done as a regular practice. Also, it does not mean “wrong” if done.
The “for ID” thing is something that I thought I understood (but not a habit I have myself), but possibly my take on it is wrong. Of course there is no requirement to say this, and it does tick some folks off, although why I am not sure as it does not hurt anything. I always understood this to be used so other stations know you are NOT signing clear, but just IDing, and also to serve as a reminder to others that it was time to ID.
While I don’t see the need in regular two sided conversations to ID every cycle, I can see the value in a large’ish round table. If there are 5 or 6 people in a round table and each takes a couple of minutes to talk (common with some groups) it might be 10 or 12 minutes before it gets back to you. Typically in such a large group I throw at least my own call at the end of a transmission, and often I throw the call of the person I expect to pick it up. Occasionally throwing everyone’s call can help people listening or thinking about jumping in. Otherwise they have to wait for one complete round table cycle before they hear who is involved in the conversation.
I adjust my own habits to the situation. If I know or suspect it is going to be some time before it gets around to me I ID at the end of a transmission. If the group I am with is shorter winded I don’t.
One thing I have noticed after almost 3 decades of ham radio:
1)-Following instructions seems to be something many have a natural aversion to.
The instructions, in this case, are a set of minimum requirements. Exceeding those minimums is not contrary to instructions, and can, in fact, sometimes be beneficial.
However, my original question was is this a common misconception that you must ID at beginning and end of each transmission, and of course anyone who thought such was required would have an issue understanding instructions.
The responses I have seen so far seem to indicate to me that it is common with very new hams or hams that were never Elmered.
2)-Asking a group of hams a simple question will result in answers that will give you a migraine headache.
This is not limited to hams, but I can see the issue.
T!