[Boatanchors] [ARC5] Coils and the winding thereof

[Carl]

I find it amazing that the human brain can adapt from a tricked out modern 
contesting level 1500W station to an early 30's thru 50's station in as long 
a time as it takes to move to another bench/desk.
Its what makes this hobby enjoyable to me and many others I know that do 
similar.

A PP 211 oscillator is also used to work (more like play around) DX contests 
on 80M.

Carl
KM1H



----- Original Message ----- 
From: "Michael Tauson" <wh7hg.hi at gmail.com>
To: "arc5" <arc5 at mailman.qth.net>; "boatanchors" 
<boatanchors at mailman.qth.net>; "milsurplus" <milsurplus at mailman.qth.net>
Sent: Thursday, July 02, 2009 6:31 PM
Subject: Re: [Boatanchors] [ARC5] Coils and the winding thereof


> On Wed, Jul 1, 2009 at 6:06 AM, Ian Wilson<ianmwilson73 at gmail.com> wrote:
>> I've had a Millen (Miller?) adjustable coil get hot enough to discolor 
>> badly
>> when used in a driver stage. This was probably a result of the small 
>> physical
>> size of the component; something larger on an air core would probably not
>> have got particularly hot.
>
> How much power were you running through the coil?
>
>> Harmonic suppression in output tanks depends to some extent on the 
>> (unloaded)
>> Q of the inductor. If you are following your po'boy TX with a new-fangled 
>> modern
>> antenna tuner, this is unlikely to matter. But it might be significant
>> if you are running a long wire with no additional filtering.
>
> No filtering but a po' boy tuner which worked nicely in the 30s and
> will now.  Hams then were as concerned about signal purity and
> harmonic suppression as they are now and they didn't have the new
> fangled toys we do now.  What they did have was operating talent which
> all the new fangled toys replace with automatic everything so there's
> no real thought in operating a set.  (Okay, I'm gonna get flamed for
> that but bring it on!)  My mentor learned the hard way starting in the
> late 20s and taught me the same way.  It's a lot different from how it
> is now.
>
> Sidenote: I'm not completely against auto-everything
> does-everything-but-breath-for-you sets ... under certain
> circumstances.  Military systems are a good example as are sets used
> for emergency communications (EARC et al.)  For normal ham use, I
> believe that everyone should know the art of tuning a rig (and, yes,
> it's an art) but I also believe everyone should have a good working
> knowledge of CW.  Sadly, I'm in a shrinking minority.
>
>> Fun project .. now where's my soldering iron?
>
> NExt to your solder?  :-)
>
> BEst regards,
>
> Michael, WH7HG
> -- 
> http://www.nationalmssociety.org/chapters/NTH/index.aspx
> http://wh7hg.blogspot.com/
> http://kludges-other-blog.blogspot.com
> Hiki Nô!
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