[ARC5] command set bench psu

[Tim]

Hi Mike - I agree, the ARC Type 12 gear is well designed and built.  It
also works quite well and sounds great with its wide-ish RX IF.  I have fun
with mine, some Pix here:
http://www.n6cc.com/type-12-vhf-am-aircraft-system
73, Tim
N6CC

On Fri, Jan 11, 2013 at 4:07 PM, Mike Everette <radiocompass at yahoo.com>wrote:

> When the Type 12 VHF receivers are right, they are amazing.  Great
> sensitivity and the stability seems good, but then again the IF is very
> wide.
>
> 73
>
> Mike
> W4DSE
>
>
>
> --- On Fri, 1/11/13, J. Forster <jfor at quikus.com> wrote:
>
> > From: J. Forster <jfor at quikus.com>
> > Subject: Re: [ARC5] command set bench psu
> > To: "Mike Hanz" <aaf-radio-1 at aafradio.org>
> > Cc: "ARC-5" <arc5 at mailman.qth.net>
> > Date: Friday, January 11, 2013, 6:49 PM
> > I fully understand Mike. I'd just not
> > seen the unit in my WW II stuff info.
> >
> > I've no interest in Type 12 stuff. BTW, it seems very few
> > other people do
> > either- the stuff just goes begging. I mistakenly bought a
> > big boxfull
> > about 30 years ago for about $5, and it's still sitting.
> >
> > -John
> >
> > ==========
> >
> >
> >
> > > They are indeed, John, but the WWII sets have about the
> > same power
> > > requirements, so while the manual may not say ARA/274N
> > or the like, it's
> > > a perfect supply for them. It's a neat little supply
> > that doesn't take
> > > up much space on your bench, and is especially useful
> > if about all you
> > > service are WWII aircraft receivers of various
> > types.  It will power a
> > > BC-348 about as well as the command sets, for example.
> > >
> > > On 1/11/2013 5:38 PM, J. Forster wrote:
> > >> In looking at the pics, it seems they might be
> > post-WWII and designed to
> > >> service the Type 12 stuff.
> > >> ===========
> > >>> Thanks for the good information!
> > >>>
> > >>> I got a couple of those; I never realized they
> > were for the
> > >>> ARC-5/SCR-274N
> > >>> and later type receivers! I picked up 2 at a
> > hamfest a long time ago
> > >>> for
> > >>> $25
> > >>> for both. I used them as general bench
> > supplies, for the plate voltage.
> > >>> I
> > >>> never used the 24VDC output...
> > >>> Since they haven't been used for a while, it's
> > time to dust them off
> > >>> and
> > >>> replace the rectifiers and mod them per Mike!
> > >>>
> > >>> 73, Meir WF2U
> > >>> Landrum, SC
> > >>>
> > >>> -----Original Message-----
> > >>> From: arc5-bounces at mailman.qth.net
> > >>> [mailto:arc5-bounces at mailman.qth.net]
> > >>> On
> > >>> Behalf Of Mike Hanz
> > >>> Sent: Friday, January 11, 2013 4:35 PM
> > >>> To: Darryl Sage
> > >>> Cc: ARC5 at mailman.qth.net
> > >>> Subject: Re: [ARC5] command set bench psu
> > >>>
> > >>> On 1/11/2013 2:52 PM, Darryl Sage wrote:
> > >>>> I saw a command set bench psu . i had to
> > have it more mony than
> > >>>> brains.I
> > >>>> guess i can retire a few dynos  I have
> > never seen one before are they
> > >>>> rare?
> > >>>> darryl    ve3cpo
> > >>> I'm assuming that you are referring to
> > >>>
> http://www.ebay.com/itm/ARC-5-Power-Supply-SCR-274N-Receiver-OEM-/1409024993
> > >>> 34
> > >>>
> > >>>
> > >>> I've had a few cycle through here.  I've
> > used them for a while, then
> > >>> pass them on to someone who's wanting
> > one.  They have some drawbacks,
> > >>> one of which you can see in the photos - the
> > voltages tend to be on the
> > >>> high side rather than the low side as we are
> > more and more trying to
> > >>> provide for our dwindling supply of command
> > sets.  The selenium
> > >>> rectifier used for the low voltage supply
> > should be replaced before it
> > >>> replaces you, and the HV bridge diodes could be
> > replaced by four modern
> > >>> HV diodes.
> > >>>
> > >>> You can fix the voltages with a bucking
> > transformer, but if I was
> > >>> keeping one, I'd put in a 6082 (24v filament)
> > series regulator on a
> > >>> 3"x3" outboard chassis on the back, and design
> > the circuit so that the
> > >>> HV switch steps started at maybe 50v and ended
> > up around 220v. There
> > >>> are
> > >>> plenty of those circuits in the manuals.
> > Then it would be pretty
> > >>> useful.  It's a shame the nifty cable with
> > the dynamotor connector was
> > >>> retained by the seller, but you can cobble one
> > up fairly easily, if not
> > >>> as elegant looking.
> > >>>
> > >>> Congratulations on your purchase - I'm sure
> > you'll enjoy using it!
> > >>>
> > >>> 73,
> > >>>    - Mike
> > >
> > >
> >
> >
> > ______________________________________________________________
> > ARC5 mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/arc5
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:ARC5 at mailman.qth.net
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
> >
> ______________________________________________________________
> ARC5 mailing list
> Home: http://mailman.qth.net/mailman/listinfo/arc5
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:ARC5 at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>