[ARC5] Replacing the 12v tubes with 6volt types

[Paddy Ryan]

Yeah ..works ok but you need to remember the filament current is doubled..73 
de Pat/EI7CN

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Sent: Thursday, October 18, 2012 3:22 PM
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Subject: ARC5 Digest, Vol 105, Issue 85

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Today's Topics:

   1. Re: Modifying the adapter box (gordon white)
   2. Re: On Hacking (gordon white)
   3. Re: Modifying the adapter box (Mike Hanz)
   4. Re: On Hacking (Ian Wilson)


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Message: 1
Date: Thu, 18 Oct 2012 09:49:06 -0400
From: gordon white <gewhite at crosslink.net>
Subject: Re: [ARC5] Modifying the adapter box
To: David Stinson <arc5 at ix.netcom.com>
Cc: ARC-5 Mail List <ARC5 at mailman.qth.net>
Message-ID: <508008D2.2000609 at crosslink.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

     I have one of those servicing brackets, butit's awkward to use. My
solution to local control (if you do not have the original C-24 local
control plug-in, or even if you do and want to have a phone jack on the
front), is to cut an aluminum rectangle the same size as the adapter and
put the controls and jack on it and find a female receptacle thatwill
fit on the plug in the rear of the adapter recess. Since there are four
threaded holes to screw it to, that makes a nice setup with no changes
to the receiver needed. Of course if you have an original rack you do
not need the phone jack. You still need a B+ and filament connection at
the back of the receiver. But I have used an A/C power supply mounted on
a dynamotor plate with its own cord and plug.

     Yes, I know, I disturbed the originaldynamotor, but I carefully
disconnected the body of thething from the plate so it can be replaced.

     Back in the day, when splined cable ends were to be had by the
dozen and damaged control cables were also to be had, as well as damaged
remote control heads, I took the little cranks off the controls and
attached them to splines, using the cable sheath ends and nuts to make
neat localcontrol cranks.

  - Gordon White


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Message: 2
Date: Thu, 18 Oct 2012 09:58:30 -0400
From: gordon white <gewhite at crosslink.net>
Subject: Re: [ARC5] On Hacking
To: mac <w7qho at aol.com>
Cc: ARC-5 Mail List <arc5 at mailman.qth.net>
Message-ID: <50800B06.6010407 at crosslink.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

I have replaced 12 volt tubes with their 6 volt cousins, avoiding any
re-wiring.

  - Gordon White


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Message: 3
Date: Thu, 18 Oct 2012 09:58:47 -0400
From: Mike Hanz <aaf-radio-1 at aafradio.org>
Subject: Re: [ARC5] Modifying the adapter box
To: "Todd, KA1KAQ" <ka1kaq at gmail.com>
Cc: ARC-5 Mail List <ARC5 at mailman.qth.net>
Message-ID: <50800B17.1060601 at aafradio.org>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

On 10/17/2012 12:10 AM, Todd, KA1KAQ wrote:

> Along the same line, has anyone seen or does anyone own one of
> those.....not sure the name, but it's a rear clip-on bracket with built in
> rear connector for a single receiver and an extension cable meant for 
> field
> or bench servicing. Came across one in my 'stuff' a week or so back,
> forgot I had it. Kinda neat, but without applying some tape around the
> bracket, it looks like it would really tear up the black paint.

It does indeed, Todd.  I have some examples here in the slash and burn
pile that have scratches on them from those "ears" on the bracket that
are supposed to intercept the slot between cover and base.  They seem to
be useful for two thing these days...display or with already modified
units.  I gave mine to someone who wanted it for the latter.  I just use
a standard rear connector from a rack, with an aluminum backshell to
capture the cable.  Back in the day, scratches weren't something to
worry about too much, though it was frowned upon by the Navy Air arm
with their concern about salt spray damage on carrier aircraft equipment.

73,
Mike  KC4TOS



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Message: 4
Date: Thu, 18 Oct 2012 07:22:27 -0700
From: Ian Wilson <ianmwilson73 at gmail.com>
Subject: Re: [ARC5] On Hacking
To: gewhite at crosslink.net
Cc: ARC-5 Mail List <arc5 at mailman.qth.net>
Message-ID:
<CAEz8jcTWLqLOxO7Q12U0Xvxoi+Yh7atUd25mtJ67w53cpnOVOg at mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

Gordon,

What did you use as a sub for the 12A6? 6K6?

73, ian K3IMW

On Thu, Oct 18, 2012 at 6:58 AM, gordon white <gewhite at crosslink.net> wrote:

> I have replaced 12 volt tubes with their 6 volt cousins, avoiding any
> re-wiring.
>
>   - Gordon White
> ______________________________________________________________
>


------------------------------

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End of ARC5 Digest, Vol 105, Issue 85
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