[R-390] Nuvistaplug?

Sun Dec 25 20:44:55 EST 2005

>From the "Yeah-But-Whattabout Dept."

YBW the J-NON X series?

BTW - Merry X-mas and Happy X-Year.

BTW #2 -- anybody know the origins of the format "X-mas"?  Betcha I do but I 
ain't tellin'.

Barry

----- Original Message ----- 
From: "Les Locklear" <leslocklear at cableone.net>
To: "'Mark Huss'" <mhuss1 at bellatlantic.net>; "r390 net" 
<r-390 at mailman.qth.net>; "'Cecil Acuff'" <chacuff at cableone.net>
Sent: Sunday, December 25, 2005 7:35 PM
Subject: Re: [R-390] Nuvistaplug?

>I saw that remark earlier, but let him slide. He obviously doesn't know 
>what he is
> talking about. And, I have tuned up enough people this year, my quota is 
> almost used up.
>
> Actually there were over 40 different suffix numbers, the highest suffix 
> number being
> the JX-39 which was built for the FAA. The last SP-600 series built was 
> the JX-21A which
> had the product detector and 22 tubes vs. 20 in the standard models. Early 
> versions
> didn't have a suffix number, simply marked SP-600JX.
>
> A properly aligned and operating will hear anything you can hear on a 
> R-390/URR or R-
> 390A/URR (see how simple that is) (for the NON-A crowd). Those that whine 
> about the
> frequency readout don't know the bands very well, I know exactly what I'm 
> listening to
> when tuning with an SP-600. But, knowing the bands has become a lost art 
> for the digital
> generation.
>
>
> Les Locklear
> Gulfport, Ms.
> Professional Curmudgeon
> Equal Opportunity Annoyer
>
> On Sun, 25 Dec 2005 16:46 , 'Cecil Acuff' <chacuff at cableone.net> sent:
>
>>Hey Folks,
>>
>>        Les Locklear can speak better to this...as can Andy and Al Parker
>>but there aren't really 21 different models....I think there were just a
>>group of different contracts of sorts over the years in the JX series and
>>the JX numbers were not in order of manufacture.  Just because it had a
>>different JX number didn't mean it had a change to the circuit
>>configuration.  I think the JX-1 through JX-14 were pretty much the same
>>then came the JX-17 which is know as the "Diversity" model and then back 
>>to
>>the pretty much standard circuit configuration from that point on up to 
>>the
>>top...which was what the JX-26 or 31 or something like that.....Then there
>>was the VLF!
>>
>>There were a few field modifications released by the military such as the
>>variable IF gain control on the front panel which is a nice mod!
>>
>>They changed from paper caps to ceramic caps at some point.
>>
>>I'm not partial to the Diversity model but they seem to bring more when 
>>sold
>>than the others....
>>
>>If buying I would be more concerned about the condition of the radio than
>>the model designation, but they are all getting more expensive for sure! 
>>I
>>own a JX-1 and a JX-14 and I think the JX-1 is the nicer of the two and 
>>will
>>probably be my keeper along with the VLF and the SP-600 Leary.
>>
>>Those who are more knowledgeable in the models please correct me if I have
>>led anyone down the wrong path!
>>
>>Cecil.....
>>----- Original Message ----- 
>>From: "Mark Huss" mhuss1 at bellatlantic.net>
>>To: "Cecil Acuff" chacuff at cableone.net>
>>Cc: "Michael Murphy" mjmurphy45 at comcast.net>; "r390 net"
>>r-390 at mailman.qth.net>
>>Sent: Saturday, December 24, 2005 9:18 PM
>>Subject: Re: [R-390] Nuvistaplug?
>>
>>
>>> Oh, I could go on and on about the comparative performance of the
>>> R-390/R-390A as opposed to the Sp-600 (including you need 21 major 
>>> changes
>>> to get it right!), but to be honest, I'm one of the guys that have been
>>> bidding unsuccessfully for an SP-600 on E-Bay, so I shouldn't talk.
>>> Indeed, the only reason I don't have one yet is trying to decide which 
>>> of
>>> the 21 different models is best for MW DX'ing. I saw some down in the 
>>> Air
>>> Force place, and was not impressed with it's ability to dig some very 
>>> weak
>>> signals out of the noise that you knew were there. But for scanning for
>>> unknowns, it felt very good. A hassle converting the tuning to an exact
>>> frequency. So anybody want to sell me their #5 SP-600? Maybe give me a
>>> better idea of the differences in the various models off the group. P.S.
>>> Another writer sent me an e-mail at my direct address about the
>>> Nuvistaplug. Said that it gave his SP-600JX1 another 9dB S+N/N, dropping
>>> the noise floor to about equivelent to the R-390A, and he liked the
>>> broader slope of the filters. Gave it more of an R-390 sound.
>>>
>>>
>>> Cecil Acuff wrote:
>>>
>>>> Group,
>>>>
>>>> Well whatever the SP-600 may lack in performance against the R-390A 
>>>> (the
>>>> boys radio I'm told) it makes up for in it's tuning system, audio and
>>>> classic looks......we don't call any of them "Depot Dawgs" either do we
>>>> Mr. Moorer. (does have a pedigree though!)
>>>>
>>>> It's molded paper caps fail just as often as the ones in the R-390A and
>>>> the government never set a mountain of them out in the weather for an
>>>> extended period (that I've heard about anyway)....which has been blamed
>>>> for the failures of those in the R-390A. Much scientific testing, such 
>>>> as
>>>> boiling (or was it baking) and freezing of them many times over to
>>>> simulate the SJC conditions has been conducted, as I understand it, to
>>>> substantiate that conclusion. (results published elsewhere)
>>>>
>>>> HA!....just a little Christmas Eve fun folks...they are both great
>>>> radio's and I am proud to own several of each!
>>>>
>>>> Merry Christmas to all....
>>>>
>>>> Cecil Acuff
>>>> WB5VCE
>>>> Gulfport MS (Katrina Central)
>>>>
>>>
>>>
>>
>>
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