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Re: [Amps] Tips For Winding a Plate Choke

To: "Jim Thomson" <jim.thom@telus.net>, "Roger - W7TZ" <ai7rogerroger@gmail.com>, <amps@contesting.com>
Subject: Re: [Amps] Tips For Winding a Plate Choke
From: "Carl" <km1h@jeremy.qozzy.com>
Date: Wed, 9 Oct 2019 21:04:09 -0400
List-post: <mailto:amps@contesting.com>
Ive had no problems from squeezing the Ameritron choke into Alpha 76/78's etc which is about as tight as you can get.

Carl



----- Original Message ----- From: "Jim Thomson" <jim.thom@telus.net>
To: "Roger - W7TZ" <ai7rogerroger@gmail.com>; <amps@contesting.com>
Sent: Tuesday, October 08, 2019 5:08 PM
Subject: Re: [Amps] Tips For Winding a Plate Choke


## They can be mounted either vertically or horizontally, both mounting schemes work. Typ vert mounting is used. Either way B+ has to be fed to the base of the plate choke. Also, bypass caps have to be installed at base of plate choke. Also, you dont want to mount a plate choke parallel to a sidewall, nor the chassis. The stray C will screw up the choke, and shift its series resonances... down in freq.... which could easily cause catastrophic results. If you do mount parallel to sidewall or chassis, choke should be at least 3 x its diameter away
from  surrounding  metal.  Vert  mounting  solves  these issues.

Jim  VE7RF




From: Roger - W7TZ
Sent: Monday, October 7, 2019 9:14 AM
To: amps@contesting.com
Cc: Jim Thomson ; MU 4CX250B
Subject: Re: [Amps] Tips For Winding a Plate Choke

Out of curiosity, is there a particular reason that HV chokes are typically mounted vertically and not horizontally?

73, Roger
W7TZ
CN83ia
Grid Busters
w7tz.webs.com


On Mon, Oct 7, 2019 at 8:57 AM MU 4CX250B <4cx250b@miamioh.edu> wrote:

 Oops, I meant 1rps, not 1rpm!
 Jim w8zr

 Sent from my iPhone

 > On Oct 7, 2019, at 9:50 AM, Jim Thomson <jim.thom@telus.net> wrote:
 >
 >
> ## 1 rpm is too slow....it will take forever to wind. 30-60 rpm works good.
 > A  slowed  down  drill  press  will  also work
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