Aside from that, there is no need to be concerned about a meter
reading for a receiver that is turned off. In short, any attempt to
force a mechanical zero would be negated by the "electrical zero" set
and S-9 calibration.

Yes, I agree that is in principle there is no need to be concerned about a meter
reading for a receiver that is turned off. But I am instead concerned about
that, because I like to have all my equipment in perfect order, and a meter that
does not stay on its zero when the radio is turned off is something that I
dislike and anyway wish to fix.

If I would not have had such requirement, I would not have put the question
because it is fairly evident that, when the radio is on, the zero can be
adjusted by means of the control indicated in the manual. All old receivers have
a zero control for the S-meter.

Moreover, the same problem anyway occurs for the RF output meter of the matching
transmitter (Hallicrafters HT44), which is of the same type. But in the HT44
there is no electrical zero adjustment control, so the only way of zeroing the
meter is to open it and adjusting it mechanically.

By the way, in the meantime I have found the way of zeroing the meter, so it is
no longer an issue.

73

Tony I0JX