[R-390] R390(non A) questions Pearls of Wisdom

[Larry H]

Thank you Lester.  I noticed that the link to Rippel's home page in
Medley's page was not working.  Here's the link to his archived page:

https://web.archive.org/web/20090204020515/http://www.r390a.com/

But, there's not much R-390 info there.

Regards, Larry

On Sun, Sep 9, 2018 at 11:37 AM, Lester Veenstra <m0ycm at veenstras.com>
wrote:

> And of course:
>
> http://r-390.com
>
>
>
> Lester B Veenstra  K1YCM  MØYCM  W8YCM   6Y6Y
> lester at veenstras.com
>
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> -----Original Message-----
> From: r-390-bounces at mailman.qth.net [mailto:r-390-bounces at mailman.qth.net]
> On Behalf Of Cecil Acuff
> Sent: Friday, September 07, 2018 5:00 PM
> To: Roger Ruszkowski
> Cc: r-390 at mailman.qth.net; navydude1962 at yahoo.com
> Subject: Re: [R-390] R390(non A) questions Pearls of Wisdom
>
> This may stir some up but...
>
> What you will find with the R-390/URR is that it’s a much better built
> radio. You don’t need lists of trouble prone capacitors...because there
> aren’t any. All high quality mil spec (when that meant something) metal
> cased capacitors with glass seals.
>
> No mechanical filters that tend to wear out and fail, no electrolytic
> filter caps to rebuild...the 390 uses oil bath caps that rarely fail.
>
> Biggest issues are a few 47 ohm 2 watt resistors that go out of spec. Some
> below the audio tubes and some below the regulators in the power supply.
> Standard practice is to replace them with 5 watt wire wound cement blocks.
> Also the regulator tubes run hot so a muffin fan in that area helps a
> lot...beyond that it’s tubes, out of tolerance resistors and cleaning,
> lubing and alignment.  They sound better too.
>
> Some will say the 390 is a mans radio and the A a boys radio. 😦
>
> It’s strange... the 390As seem to sell for more and there were way more of
> them made than the 390s....seems backwards to me.
>
> The 390A is a cost reduced version of the R-390/URR...not sure how many
> they built but it wasn’t anywhere near the 60+ thousand A models.
>
> Won’t see much from Rippel on the 390. Was told they scared him...probably
> urban legend though...haha!
>
> Cecil
> K5DL
>
> Sent using recycled electrons.
>
> > On Sep 7, 2018, at 11:53 AM, Roger Ruszkowski <
> flowertime01 at wmconnect.com> wrote:
> >
> >
> > Ed,
> > You ask,
> > Is there a comprehensive list of mods and restoration tips, along the
> lines of Chuck's?
> > Eager to learn more about this receiver, as I am on the verge of getting
> one. Thanks in advance.
> > 73,
> > Ed NI6S
> >
> >
> >
> > The R390 Fellows keep up the following web site.
> > www.r-390a.net/
> >
> > The R390 and R390A both exist and we Fellows just keep them together.
> > The R390A TM says read your R390 TM for procedures to complete R390A
> maintenance.
> >
> >
> > Roger
> >
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