[Boatanchors] RANGER I questions

[cemilton at aol.com]

GM Garey and the group..................

Garey, you have described the RANGER I I'm restoring to a tee.  Number 
2 on your list is a match.   Thanks for confirming it for me.  That 
means it's "original" as found and I'll complete the restoration 
accordingly.  And yes to the schematic.  I"ll be happy to reimburse you.

And to everyone offering your comments, thanks very much.

A fine group on this list as always.

73 de W4MIL
Chuck
Palm Coast, FL






-----Original Message-----
From: Garey Barrell <k4oah at mindspring.com>
To: cemilton at aol.com
Cc: boatanchors at mailman.qth.net
Sent: Tue, 6 Nov 2007 10:36 pm
Subject: Re: [Boatanchors] RANGER I questions



There ARE three versions.


1.  NO bias supply


2.  Bias supply with 6AL5 rectifier, AC dropped from HV winding via six
each 2W resistors mounted on the keyer subchassis.


3.  Bias supply with 6AL5 rectifier, AC from taps on the power
transformer HV secondary.  No big resistors on subchassis.


I'm out of town this week, but can provide a schematic when I get home
if you don't find it first.


73, Garey - K4OAH

St Charles, IL



cemilton at aol.com wrote:

> GE to the list,

>

> I'm restoring another RANGER I and I've come across something that
> begs me to ask if there were more than two versions of this rig.  The
> first one I restored was a "later" version and wired exactly like the
> schematic.

>

> I have the schematic for the "early" model  (without 6AL5 and 12AU7
> keyer) and fixed modulator bias.  The power trannie for the early
> model does NOT have windings for a bias rectifier.

>

> The schematic for the later model of course shows the 6AL5 bias
> rectifier and 12AU7 keyer. Modulator bias is taken directly from 1/2
> of the 6AL5 bias rectifier.  The power trannie has the bias windings.

>

> Now to this rig............... It has the early power trannie without
> bias windings and  the modulator bias is wired as shown in  the
> "early" schematic.  It also has the 6AL5 and 12AU7 keyer deck.  The
> keyer is wired as shown in the "later" version but the 6AL5 is only
> used to provide voltage to the keyer.  Voltage for the cathodes of 
the
> 6AL5 is being picked off the plate winding of the 6AX5 and dropped
> through resistors to achieve the correct voltage for the circuit.

>

> So this rig looks like a later version but has the "early" 
transformer
> and a bias rectifier circuit unlike the "later" schematic.

>

> (I'm trying to be as clear as I can)  Hi Hi

>

> Either this is a later rig that has had the power trannie replaced
> with an "early" one and modified enough to gain operating voltage for
> the keyer...................OR, is it possible it's another version
> that I'm just not aware of?

>

> The rig will operate as it sits.  But I'm curious if anyone has seen
> what I've described and if so, would happen to have a schematic for 
it.

>

> I have a spare power trannie with the bias winding and could sub it
> and re-wire the bias rectifier and modulator bias per the later
> version schematic.    But I don't wish to do that if it's possible
> what I'm seeing is a third version.

>

> Anyone have any ideas or comments?

>

> Much appreciated.

>

> 73 de W4MIL

> Chuck

>






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