[R-390] URM 25D Signal Generator

[Roy Morgan]

At 10:21 AM 12/7/03 -0800, Joe Foley wrote:

>Speaking of signal generators, how does the URM-25J
>stack up against the others mentioned?

Joe,

My guess is: about the same.

>Is it substantially better than the "D" model?  Just
>what are the differences?

Can't tell you, but my notes on the URM-25 include the following messages.

I assume that "more attenuation stages" means an additional step in the 
output attenuator.  I do not have pictures with enough clarity to see if 
this is true or not.

>Subject: Re: [R-390] Tags on urm-25d
>To: r-390@qth.net
>From: "Roger L Ruszkowski" <rlruszkowski@west.raytheon.com>
>Date: Wed, 7 Nov 2001 08:32:29 -0800
>Sender: owner-r-390@qth.net
>
>I just bought a urm-25 generator from fair radio (checked unit). It looks
>complete with all the adapters manual etc. When I was looking for one they
>disappered off the web and epay. My unit has 2 different tags on it the
>front panel has a urm-25d (with new screws) and the case has a urm-25j (1968
>?) Is there anyway of knowing which one I have and what version is a
>urm-25j?
> >
> > Thanks
> > Mike
> > mikobrien@excite.com
>
>Mike,
>
>It's a D.
>
>The tag is attached to the front panel.
>The front panel is attached to the guts.
>The is what makes the model.
>The case is just there to keep the dust out.
>
>Ok so some one droped a D model into a J case.
>Ah the wonders of interchangeable parts.
>
>
>The J version is the 9th or 10th version.
>
>Roger.
>
>From: Llgpt@aol.com
>Message-ID: <b9.165ae818.291aea54@aol.com>
>Date: Wed, 7 Nov 2001 14:49:40 EST
>Subject: [Hammarlund] Re: [R-390] Tags on urm-25d
>Sender: owner-hammarlund@qth.net
>
>
>In a message dated 11/07/01 10:17:21 AM, pha@pdq.com writes:
>
><< I thought the URM-25J was a URM-25D with a different accessory or two.  At
>least that was what I read on one of these lists awhile back.
>
>Paul
>  >>
>
>And, more attenuation stages in it.
>
>Les


Roy

- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
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