[R-390] R-390A mounting position

Tue, 20 Apr 2004 20:50:50 -0400

I think the best is a compromise, 22 degrees for the R-390 and 23 for the
chair. I gave one degree less for the radio to conserve the mechanics
----- Original Message ----- 
From: "Bob Camp" <[email protected]>
To: "Dennis L. Wade" <[email protected]>
Cc: <[email protected]>
Sent: Tuesday, April 20, 2004 8:39 PM
Subject: Re: [R-390] R-390A mounting position


> Hi
>
> I think you would get around the weight on the back of the radio
> problem with a 20 degree tilt. You probably will still have to need to
> fiddle the racks a bit to make it work.
>
> Take Care!
>
> Bob Camp
>
>
>
> On Apr 20, 2004, at 8:45 PM, Dennis L. Wade wrote:
>
> > I can certainly understand the physics involved with
> > running it at a 45 deg tilt.
> >
> > But, I've been considering a rack style console that
> > would hold a '390A in the lowest (desktop level)
> > position.  If the front panel were perpendicular to
> > the desktop, one has to crouch a bit to view the panel
> > straight on.  A slight tilt, no more that 20 deg I
> > would guess, is plenty to bring it so the plane of the
> > panel is directly facing the operator.
> >
> > Does this much less severe angle pose any problems in
> > anyones mind?
> >
> >                              Dennis
> >
> >
> > --- Original Message ---
> > From: Bob Camp <[email protected]>
> > To: "D. ball" <[email protected]>
> > CC: [email protected]
> > Subject: Re: [R-390] R-390A mounting position
> >
> >> Hi
> >>
> >> Physically doing an inclined mount on a 390 may be
> > harder than it=20
> >> looks. The radio really is not set up to hang by it's
> > face plate. If=20
> >> you take a look at the "standard" cabinets they go to
> > great lengths to=20=
> >>
> >> support the radio along the bottom edge of the frame.
> > In order to keep=20=
> >>
> >> things right you would need to support both the back
> > of the radio and=20
> >> the bottom of the radio. Not easy ....
> >>
> >> That of course assumes we are talking about a 45
> > degree tip back. If=20
> >> you are tipping it 45 degrees forward then things are
> > even more=20
> >> difficult.
> >>
> >> I have a couple of R-390's that I would not trust
> > running at a 45=20
> >> degree angle. The springs on the slug racks do not
> > have enough "pull"=20
> >> to keep everything running smoothly when the racks
> > are at a significant=20=
> >>
> >> angle. They tend to hang up rather than follow the
> > magic cams. You=20
> >> probably could re-spring the radio with stiffer
> > springs but then the=20
> >> tuning knobs would be even harder to turn.  Since the
> > radio stays at=20
> >> the tune point due to friction you could get things a
> > bit crazy this=20
> >> way ....
> >>
> >> Bottom line - you would need a pretty good mount
> > *and* a maybe one=20
> >> radio in four to make it work like a R-390 should.
> >>
> >> Take Care!
> >>
> >> Bob Camp
> >> KB8TQ
> >>
> >>
> >>
> >> On Apr 20, 2004, at 7:47 AM, D. ball wrote:
> >>
> >>> I want to mount my 390 in a 45 degree position in a
> > homemade rack box.=20=
> >>
> >>> Does anyone for see any problems? I use the radio
> > nightly so it does=20=
> >>
> >>> get used.
> >>>
> >>> thanks
> >>>
> >>> joe
> >>>
> >>>
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> >>
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> >
> > ---------------
> > Dennis Wade
> > KG6ZI Carmichael, CA
> >
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> >
>
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