[ARC5] "Curing Chirp in Command Transmitters" T-53 Self Heating / Manuals

[Mike Morrow]

> I wondered about that heating effect, too.

The total resistance of the windings of T-53A and T-53B through which
the filament current for the 1626 flows is, at most, 0.3 ohms.  If the
rated 1626 filament current of 0.25 amps is flowing in those windings,
a **very negligible** 22 milliwatts is generated against the very
substantial mass of T-53's open ceramic coil form.  Self-heating of T-53
is non-substantive.

> Having discovered how operations and maintenance manuals get generated,
> I'm always a little sceptical of explanations of theory of operation
> in them. I take them as interesting opinions.

That itself is NOT an informed attitude.  Frankly, I am certain that you
DO NOT KNOW how the manuals for **equipment cited here** were generated.
If I am wrong, then all here will doubtless revel in a substantiated
history of the ARA/ATA, SCR-274-N, and AN/ARC-5 documentation (including
names, dates, and places) that anyone with such knowledge can certainly
readily provide.  Otherwise, there can be no basis other than prejudice
for a conclusion that these manuals are faulted by error (as distinct
from clarity or completeness) in explanation for theory of operation.
I humbly claim to have a certain amount of formal training in electrical
engineering and almost a half century of research through hundreds of the
manuals for equipment discussed here.  I have, albeit limited by those
base qualifications, found no evidence for such allegations.  Not even
one valid example has been brought to the attention of this list.

Mike / KK5F