Since I have little patience for silly stuff, eg, trying to wind my own
plate choke when new ones are available so cheap, I tend to go with the less
painful route. Do yourselves a favor and check out the RF-3 at RF Parts Co.
in San Marcos. It is the same one (reportedly) used by Ameritron in many of
their current amps.
-- 225 uH
-- 4,000 volts
-- 1,000 mills
-- 160-10 meters including WARC
I just ordered one a few weeks ago I and I think price including shipping
was less than $27.00.
This certainly does not mean that this particular choke will work well with
your amp design. This one is being used in a much modified HA-10 Warrior
that will have Rich's MOST OUTSTANDING QSK circuit, 160 meters, and four
fresh 572Bs vice 811As (yuk).
I have wound numerous plate chokes in the past but I personally prefer to
buy them already made. It is hard to wind a choke from start to finish in
less than an hour. I think the RF-3 is a great deal.
See ya'
Lane Zeitler
Kilo Mexico Three Germany (since 1982)
John 3:3 <><
-----Original Message-----
From: Jon Ogden <jono@enteract.com>
To: John / NS1Z <ns1z@agate.net>; amps@contesting.com <amps@contesting.com>
To: <amps@contesting.com>
Date: Tuesday, October 27, 1998 2:01 PM
Subject: Re: [AMPS] Winding chokes...
>
>>Now, how do you folks who wind your own accomplish getting the windings to
>>stay where you want. Do you paint them with coil dope before removing the
>>spacing wind? This is my first attempt and I need a little Elmering...
>
>Carl, KM1H, once suggested using a little fingernail polish. I tried
>this on some coils I wound and it works GREAT.
>
>Just put a dab on the wire shortly before where you are going to apply
>the spacing.
>
>However, if you are using a spacing wind, I am guessing that you are
>creating a multi-section choke with supposedly different values of
>inductance per each section. Well, according to some of the Elmers here
>on the list, these sorts of chokes suffer from worse resonances than just
>straight wound, single section chokes. What happens is that the choke
>sections tend to couple to each other.
>
>Try the fingernail polish stuff to hold it though, it works good.
>
>73,
>
>Jon
>KE9NA
>
>
>--------------------------------------------------------------------------
>Jon Ogden
>
>jono@enteract.com
>www.qsl.net/ke9na
>
>"A life lived in fear is a life half lived."
>
>
>--
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>
>
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