Just make sure you do not ground the rotor or frame, and use an insulated
shaft coupling.
_____
From: Dave M [mailto:slash_dot@msn.com]
Sent: Tuesday, January 25, 2011 4:01 PM
To: mclarson@rcc.com; kg7hf@comcast.net
Cc: amps@contesting.com
Subject: RE: [Amps] variable capacitors
Actually I have never thought of that , I had considered using just half of
one , but taking the capacitance across the 2 stators should also drop the
min capacitance as well , ....important at 10m in an HF amp ,
............................................................................
..........................
73 VE3DV , Dave
> From: mclarson@rcc.com
> To: kg7hf@comcast.net
> Date: Tue, 25 Jan 2011 14:03:35 -0500
> CC: amps@contesting.com
> Subject: Re: [Amps] variable capacitors
>
> Butterflies are not that bad -- if you do not ground the rotor and use the
> two stators as the two ends of the cap, you have half the min capacitance
> (important at VHF) twice the breakdown voltage, and no poor rotor contact
> issues. --Mike, WV2ZOW
>
> -----Original Message-----
> From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On
> Behalf Of Paul Decker
> Sent: Tuesday, January 25, 2011 1:48 PM
> To: Dave M
> Cc: amps@contesting.com
> Subject: Re: [Amps] variable capacitors
>
>
>
> Thanks Dave, much appreciated, I'll drop him a line.
>
>
>
>
>
>
>
>
> ----- Original Message -----
> From: "Dave M" <slash_dot@msn.com>
> To: kg7hf@comcast.net, amps@contesting.com
> Sent: Tuesday, January 25, 2011 12:53:09 PM
> Subject: RE: [Amps] variable capacitors
>
> Paul , I just called Bob at Monarch scince his website is down , he says
you
> can contact him directly by email and he is sure he can help you out he
has
> the facilities to make pretty much what ever you need , I have been asking
> for about a yr if he has moved to ordinary air variables but he thinks
there
> wouldnt be much call for them , if a few of us ask he will start producing
> something a little less expensive than what is available from the
mainstream
> scources but until then he has a fair offering of butterflies
>
>
> Leschyna@gmail.com is his email address
>
>
>
>
>
............................................................................
> ..........................
>
> 73 VE3DV , Dave
>
>
>
>
> > Date: Tue, 25 Jan 2011 15:10:24 +0000
> > From: kg7hf@comcast.net
> > To: amps@contesting.com
> > Subject: Re: [Amps] variable capacitors
> >
> >
> >
> >
> >
> > WOW, way more than I budgeted for this project.
> >
> >
> >
> > 160-205-1
> >
> > Qty: 1 to 24 units, $68.63 each plus a $250.00 setup charge
> >
> > Qty: 25 to 99 units, $68.63 each no setup charge required
> >
> > Qty: 100 units and above, $67.26 each
> >
> >
> >
> > 160-208-1
> >
> > Qty: 1 to 24 units, $70.56 each plus a $250.00 setup charge
> >
> > Qty: 25 to 99 units, $70.56 each no setup charge required
> >
> > Qty: 100 units and above, $69.15 each
> >
> >
> >
> > Delivery: 6 weeks or sooner
> >
> > FOB: Lindenhurst, New York
> >
> > Terms: Visa, MasterCard, American Express, and wire
> transfer accepted (add $24.00 wire transfer fee to order)
> >
> >
> >
> >
> >
> > David C. Kjeldsen
> >
> > Viking Technologies
> >
> > (formerly Cardwell Condenser Corporation)
> >
> > A member of the Viking Solutions Group, Ltd.
> >
> > 80 East Montauk Highway
> >
> > Lindenhurst, New York 11757
> >
> > Telephone: 631-957-8000
> >
> > Facsimile: 631-957-7203
> >
> > www.cardwellcondenser.com
> >
> >
> >
> >
> >
> >
> > ----- Original Message -----
> > From: "Paul Decker" <kg7hf@comcast.net>
> > To: amps@contesting.com
> > Sent: Monday, January 24, 2011 11:47:55 PM
> > Subject: variable capacitors
> >
> >
> >
> >
> > Hi gang,
> >
> >
> >
> > I'm trying to track down some possible substitutes for some cardwell.
> >
> >
> >
> > I need something along the lines of the 160-205 and 160-208 caps.
> >
> > http://www.cardwellcondenser.com/PAGES/jcsp02.html
> >
> >
> >
> > Any ideas on sources or substitutes?
> >
> >
> >
> > Thanks & 73,
> >
> > Paul, kg7hf
> > _______________________________________________
> > Amps mailing list
> > Amps@contesting.com
> > http://lists.contesting.com/mailman/listinfo/amps
> _______________________________________________
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