[AMRadio] 51J-4 with S-line knobs

wb3fau at att.net wb3fau at att.net
Mon Dec 12 19:51:01 EST 2011

Some  years back, a friend had a lite  grey  51J4,  with regular Dakaware
knobs.  This  one was  made for Beckman Inst.  

--- On Mon, 12/12/11, Todd, KA1KAQ <ka1kaq at gmail.com> wrote:

> From: Todd, KA1KAQ <ka1kaq at gmail.com>
> Subject: Re: [AMRadio] 51J-4 with S-line knobs
> To: "Discussion of AM Radio in the Amateur Service" <amradio at mailman.qth.net>
> Date: Monday, December 12, 2011, 2:03 PM
> On Mon, Dec 12, 2011 at 12:56 AM,
> Rick Poole <wa1rkt at arrl.net>
> wrote:
> >
> > What can you all tell me about the Collins 51J-4 that
> came with
> > S-line knobs? Some research indicates that only the
> latest 51J-4s
> > were so equipped, and the labeling on the front panel
> also uses a
> > slightly different font from the previous models. So
> are these
> > considered more or less desirable than the ones with
> the Dekaware
> > knobs? Were they part of some special contract?
> They're only better by virtue of using slightly newer
> components.
> Unless you're a collector who needs one of each example,
> there's no
> real benefit that I'm aware of to seeking one out as you'll
> still need
> to check and replace out-of-spec components. Collins did a
> better job
> here than most by using mil-spec components, but they're
> still 50 yrs
> old. The late model J-4s were made into the early 60s.
> Colors vary too. I've seen battleship gray, seafoam
> green(NASA and
> AF), even hammertone gray built for Berkley Instruments and
> labeled as
> such.
> At the end of the day, they're still a 51J. I prefer the
> older style
> knobs myself. The S-Line knobs with their smaller skirts
> look odd and
> out of place to me.
> ~ Todd,  KA1KAQ/4
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