[R-390] Nick's awesome 1970 Navy tech ref pdf

[Larry H]

Resending due to mail server error.

Regards, Larry

On Fri, Aug 26, 2022 at 6:29 PM Larry H <larry41gm at gmail.com> wrote:

> Nick has replaced the pdf on his website - Thank you, Nick.  Here's a
> direct link to it: R-390A 1970 chematics (navy-radio.com)
> <https://www.navy-radio.com/manuals/r390a-long-7004-schems-ljh.pdf>.
>
> Regards, Larry
>
> On Wed, Aug 24, 2022 at 12:24 AM Larry H <larry41gm at gmail.com> wrote:
>
>> Hi all,  When I was helping a fellow 390A enthusiast, I found a problem
>> in the 1970 Navy tech ref manual schematics Nick put on his website in Oct,
>> 2021.  It's in the 1st mixer section (and therefore, also on page 1 of my
>> schematic PDF that is also on his website).  The error is that there are
>> two C280's on the schematic right next to each other.  The one on the left
>> (that goes to gnd) is correct.  The one to the right should not be there as
>> it blocks the mixer plate voltage from getting to the inductor (Z213-1) and
>> then to the plate.  I will send him a corrected copy and let you know when
>> it is out on his website.
>>
>> Regards, Larry
>>
>> On Thu, Nov 4, 2021 at 5:30 PM Larry H <larry41gm at gmail.com> wrote:
>>
>>> Nick, Thank  you very much.
>>>
>>> Regards, Larry
>>>
>>> On Thu, Nov 4, 2021 at 9:01 AM Nick England <navy.radio at gmail.com>
>>> wrote:
>>>
>>>> Larry's file is now posted at
>>>> https://www.navy-radio.com/manuals/r390a-long-7004-schems-ljh.pdf
>>>>
>>>> Nick England K4NYW
>>>> www.navy-radio.com
>>>>
>>>>
>>>> On Thu, Nov 4, 2021 at 2:05 AM Larry H <larry41gm at gmail.com> wrote:
>>>>
>>>>> Hi all.  Nick said he'd put this pdf on his website, so it will be
>>>>> available to all when he does.  I'll let you know when it's  there.
>>>>>
>>>>> Regards, Larry
>>>>>
>>>>> On Tue, Nov 2, 2021 at 11:28 PM Larry H <larry41gm at gmail.com> wrote:
>>>>>
>>>>> > I liked the schematic scans that Nick did so well, that I extracted
>>>>> the 6
>>>>> > schematic pages and 4 other extra wide pages and put them in a 10
>>>>> page
>>>>> > pdf.  The content is as follows: pages 1 to 6 are the complete wide
>>>>> > schematics (in the correct order), 7 and 8 are the filament and
>>>>> heater
>>>>> > wiring and the chassis harness,  and 9 and 10 are the tuning system
>>>>> and
>>>>> > gear train.  I've not seen these pages so clear when you zoom in on
>>>>> them.
>>>>> > Try it on the schematics and the gear train (so easy to see).
>>>>> You'll love
>>>>> > it.
>>>>> >
>>>>> > I corrected the schematic on page 3, the 2nd crystal oscillator.  It
>>>>> was
>>>>> > missing the input to the oscillator grid from the crystal selection
>>>>> switch.
>>>>> >
>>>>> > I added about a half  inch of schematic to page 5 on the far right
>>>>> end to
>>>>> > complete the circuitry for the AGC function.  Sorry, it could be
>>>>> aligned a
>>>>> > little better.
>>>>> >
>>>>> > I reordered 2 of the pages in the schematic section.  They are now
>>>>> in the
>>>>> > right order.
>>>>> >
>>>>> > I don't have a public place to put them at the moment, so if you'd
>>>>> like a
>>>>> > copy, let me know.  It's under 4 MB in size.  It's really nice for
>>>>> viewing
>>>>> > online, and I think for printing but have not tried that yet.
>>>>> >
>>>>> > Regards, Larry
>>>>> >
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>>>>