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[TenTec] Argonaut V Fan

To: <tentec@contesting.com>
Subject: [TenTec] Argonaut V Fan
From: WA3FIY@radioadv.com (WA3FIY)
Date: Fri, 15 Nov 2002 14:26:34 -0500
Nope!    I should have emphasized "...THINK..." in my post.   You 
are the second person to say it runs all the time.  I got the idea 
that it was thermostatically controlled from the schematic which 
shows a temperature sensor in addition to the bias diodes on the 
PA module and that there is a third line going to the fan 
assembly that looks like a control circuit.  I just put 2 and 2 
together and got the wrong answer.    :-)   Sorry about that!

-73-

-Lee-

On 15 Nov 2002 at 14:05, JLeroy@Automationdirect.com wrote:

> Lee, mine runs all the time. Do you know something I don't?
> 73,
> John W4JKL
> 
> 
> -----Original Message-----
> From: WA3FIY [mailto:wa3fiy@radioadv.com]
> Sent: Friday, November 15, 2002 10:36 AM
> To: Mark Erbaugh; tentec@contesting.com
> Subject: Re: [TenTec] Argonaut V Fan
> 
> 
> Hello Mark,
> 
> I think the fan is thermally controlled when it is installed as 
> directed.  Only runs when needed.
> 
> If you connect it to the 12 volt jack, it will run all the time the
> radio is on, even if not necessary.
> 
> -73-
> 
> -Lee-
> 
> On 15 Nov 2002 at 9:37, Mark Erbaugh wrote:
> 
> > Has anyone installed the optional fan for the new Argonaut V?  The
> > instructions have you opening the radio and running the power lead
> > through a grommet (in which you have to cut a hole) to a mating jack
> > inside. However, there is 12v available to a phono jack on the back
> > of the radio. This jack is only powered when the radio is on. To me,
> > it seems a simpler place to get the power for the fan - you would
> > just have to modify the plug on the fan power lead. This would make
> > it easier to remove the fan when not needed.
> > 
> > Can anyone see any reason not to use this 12v jack instead? If you
> > needed power for another accessory, you could always build a Y
> > cable.
> > 
> > Currently, I hooked up an external fan (an only computer fan) and
> > have that blowing on to the back of the radio - I found that after a
> > 5 minute PSK31 transmission the heat sink was pretty warm.
> > 
> > 73,
> > Mark
> > 
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> > 
> 
> 
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