[Icom] Re: IC756Pro - mic and cosmetics?

[Chris BONDE]

Tend to agree.  As long as the rig is cool.  HOWEVER, in the summer time=20
(when the living is easy, da-da- daa,) the temp on the therm-oh-meter above=
=20
the vent goes to 40 sumtimes 50 celcius when I am listening!!  When my=20
computer is roaring away with 4 fans and the case is cool to touch, I=20
wonder about my rig.  Maybe too much so.

Letting the air vent one way (by convextion) when not Tx then going the=20
other way when Tx, is almost like the counterflow lanes in the big smogs=20
but without much planning.

I guess I should ask what would the max temp at the vent on the top front=20
of the rig should be?  Not max for destruction but for good long time=20
operation.  Probably the reason I am worrying is that my good old 735 got=20
too  o   o hot and did not work properly.  It was not until I touched it=20
that I realized that it was too o   o    hot.  Freq, etc went every which=
 way.
   Chris opr VE7HCB

At 10:44 AM 2002-04-30 +0200, you wrote:
>   basically what a blower has to do is MOVE the air. It doesn't matter
>whether it's up or down. heat up is relevant only when you rely on natural
>convection. any form of forced air cooling can go any old way.
>
>                         Alex    4Z5KS
>
> > -----Original Message-----
> > From: Tony Hwang [SMTP:dragon40@shaw.ca]
> > Sent: =E2 30 =E0=F4=F8=E9=EC 2002 3:55
> > To:   icom@mailman.qth.net
> > Subject:      Re: [Icom] Re: IC756Pro - mic and cosmetics?
> >
> >
> >
> > Chris BONDE wrote:
> >
> > > George:
> > > I think that you are the first to mention that the vent at the top is
> > > intake rather than exhaust.  To me that is rather a poor design, since
> > > heat tends to raise.  I have placed my sweaty palm above the vent and
> > > thought that the air was moving up out of the vent.  Even when I Tx
> > > the sensation was the same.  However, I took your advice and tried the
> > > Keelex text.
> >
> > Hi,
> > Easiest way to see which way air flows is to blow a puff of cigarette
> > smoke briefly.
> > The thing is making the air move all the time whether bottom up or top
> > down.
> > There once was a mainframe system which had a blower mounted on the top
> > of the
> > cabinet and air was blown downward. We used to call it top hat blower.
> > Did the
> > cooling job alright.
> > 73,
> > Tony, VE6CGX
> >
> > ----
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