[ARC5] Heater wiring - 12V vs. 24v

[Michael]

I realize this is awful late but this is the first time I've been able to
respond.

Les, in answer to your question, to wit:

> On a different subject, how do you justify the HUGE effort in collating 
> all the info for your book and the time to write it?

Very simply, I don't.  

My previous publication came out of a set of lists I made for myself to keep
from having to cross reference half a dozen dead tree manuals all at once.
I added some poorly worded prose done on a tripe-writer that hated me and I
had a more or less instant success because no one had bothered to gather all
that information in one place before.  Some thirty years later, it's still
selling despite its having found its way onto the web.  My quiet bragging
right is that it has gone international and is (Was?  Mike Hanz, is it
still?) in use at the NASM.

Several people here pointed out a few weaknesses in the original,
specifically equipment not listed, one or two errors (I told you that
machine hated me.  No, really, it did!), no mention of how they were
originally used, no historic background and so on.  The list was pretty
long.  It boiled down to refocusing from a small portion of the company's
product line to a much broader and far more inclusive one to include the
company itself.  

Several people have tried this before including our own beloved and highly
respected Gordon White, from whom I'm probably going to steal the title.
They simply didn't have the time to put into it due to other commitments and
the fact that they have real lives.  I'm retired/disabled, I am agoraphobic
& subject to anxiety attacks therefore don't go out a lot and I haven't had
a life for so long I've forgotten what it means.  As a result, I have the
time.  With that, I like history, I have the interest and I enjoy research
in detail.  I've used A.R.C. equipment as a ham and as a pilot, so have that
experience as well.  I don't have some of the information others here have
and haven't yet yielded up but either I'll find the right grovel/bribe or be
forced to send in Mung the Moribund. 

Anyway, getting back, I don't believe there's anything to justify.  I have
always enjoyed a good challenge and this definitely is one.  It's
frustrating as anything at times but it's fun ferreting out unique pieces
like your R-24 and a late construction ATA Tx I have that has the antenna
loading coil cover held on by screws like an AN/ARC-5 Tx instead of two snap
slides.  

In all of this, I hope to find what GF/RU systems used which *letter* model
transmitters & receivers (and what the differences were), how the different
SCR-A*-183 versions varied to make them incompatible (and why the AF version
was so different as to require coils with locating pins to prevent other
coils from being used) and if/where the receivers or transmitters from the
different systems were used with other equipment like the RU receivers were
with the GO & GP transmitters. 

These are just part of the growing list of questions to which I have no
answers as of yet.  

Believe it or not, I am not masochistic; it just seems that way at times.

Best regards,
 
Michael, WH7HG BL01xh
http://www.nationalmssociety.org/chapters/NTH/index.aspx 
http://wh7hg.blogspot.com/ 
http://kludges-other-blog.blogspot.com 
Hiki Nô!