[ARC5] [Milsurplus] ARC-5 Receiver Question

[Leslie Smith]

Hello John,
I can confirm the information given by Mike Morrow.  While I own only (perhaps) 8 or 10 Command sets, the use of glass valves seems common - and I have seen glass valves (or tubes) mixed with metal types in the same set.

On a different subject, I have 50 power supply cards back from the card maker, and am in the process of fitting the components.  The design is similar (almost identical) to the one you have seen - voltage doubler, not DC to DC converter.

The recent discussion on using switching supplies has been interesting to me - clearly some switchers take a good deal of knowledge/effort to filter out the switching noise.

73s 

Les Smith


> ----- Original Message -----
> From: "J. Forster" <jfor at quik.com>
> To: "Mike Morrow" <kk5f at arrl.net>
> Cc: "Discussion of AN/ARC-5 military radio equipment." <arc5 at mailman.qth.net>, milsurplus at mailman.qth.net
> Subject: Re: [ARC5] [Milsurplus]  ARC-5 Receiver Question
> Date: Tue, 16 Feb 2010 20:24:36 -0800 (PST)
> 
> 
> OK. Thanks very much.
> 
> -John
> 
> ===========
> 
> 
> > John wrote:
> >
> >> I just took the top off a 3 to 6 MHz Command Receiver (w/o nameplate) and
> >> much to my surprise 5 of the 6 tubes are glass, not metal.
> >
> > That's very common in some of the later SCR-274-N receivers.  W.E. Co.
> > seems to
> > have used what was available.  A receiver manufactured at a little later
> > date,
> > judging by serial number, could very likely show the return to metal
> > tubes.
> >
> > I have several of each in my accumulation.
> >
> > Mike / KK5F
> 
> 
> ______________________________________________________________
> 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

>


-- 
_______________________________________________
Surf the Web in a faster, safer and easier way:
Download Opera 9 at http://www.opera.com

Powered by Outblaze