[Boatanchors] HRO-500 Data Sought

[J. Forster]

I think it might have been the guy who started Unidilla, Ralph Gianni. He
had a call K?FAA

FWIW,
-John




> Carl and others,
>
> Around (from dates in my database) mid 1993 someone I knew who at the time
> lived in MASS bought some or most or all of what was being hauled out of
> the
> National factory building.  I don't recall the details of why it was being
> hauled
> out at that time.  He re-sold most of the paper to me around 11/11/93.  As
> my
> specialty is and has been for nearly half a century military radio
> manuals, I
> didn't get much out of it that I actually wanted but didn't trash any of
> it.
> Over the ensuing years, I've sold some of the original equipment manuals,
> in
> some cases to include the final one which I don't normally do.
>
> On the HRO-500 specifically, I retained one Series 75 manual and one that
> has
> printed on the back cover Series 122 but that someone has written on the
> front cover Series 88.  The latter one I scanned a number of years ago and
> can
> print (I do have a stack of originals of the two foldouts Fig 50 and 51).
> There
> is also a stack of original sales sheets (one sheet, front and rear).  And
> from one to a stack of the following, mostly undated:
>
> ALTERNATE PROCEDURE FOR ALIGNING HRO-500 SYNTHESIZER.  5 pages.  I don't
> know
> what it's an alternated to.
>
> Instructions for Disassembly and Reassembly of HRO-500 Main Tuning Dial
> and
> Ball Drive Mechanism.  3 pages.
>
> INSTALLATION INSTRUCTIONS FOR TWO-SPEED HRO-500 PW DIAL.  2 pages
>
> ADDENDA TO THE HRO-500 SERIES 88.  4 pages (these changes seem to be all
> incorporated in the Series 122/88 manual I have).
>
> CSB 66-3 dtd June 9, 1966.  2 pages (apparently updates to earlier models
> including Series 75).  Signed by C. W. Huether.
>
> ASB 65-1 dtd June 15, 1965.  7 pages.  Also has info for NCX-5, NCX-A and
> NCX-D.  Printed but not signed, Harvey Whitmore.
>
> ASB 65-2 dtd September 22, 1965.  1 page.  Signed by Harvey Whitmore.
>
> RECOMMENDED SPARE PARTS KIT FOR HRO-500.  2 pages.
>
> Finally, a 3-page copy of what appears to be a handdrawn and lettered
> checklist.  At the top of each page drawn in hollow letters is "HRO-500".
> It begins
> with +12V, +11V, +10V, +8.5 AGC PNT, +7.5 BFO ENABLE...  That's down the
> left
> side of the page.  The right side of the page mostly seems to show what
> you
> should do or what you should read in order to put a check mark in the
> block.  I
> don't think it is complete.  The bottom of Page 3 ends with CHECK DIAL
> EVERY
> 10 KC.  The right side says READ f @ J5 plus some details.
>
>
>
> In a message dated 2/11/2009 12:49:27 PM Central Standard Time,
> km1h at jeremy.mv.com writes:
>> Id appreciate copies also, I believe I authored at least one of them.
>>
>> My current 500 is a series 122 with LF-10, speaker and NIB rack mounts.
>> Sold a 75 series with all docs including production allignment procedure
>> around 88. Been wondering who has that alignment info stashed away.
>>
>> Carl
>> KM1H
>> National Radio 1963-69
>> Service Tech, Service Manager
>
> Robert Downs - Houston
> wa5cab dot com (Web Store)
> MVPA 9480
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