[Premium-Rx] Harris R-2420 on the E-place

Fri Aug 5 16:38:25 EDT 2005

another term  ...  form fit and function   is a catch all to intermix 
different manufactures but achieve the same results   ostensibly..

Located 46 miles due North of the Alamo, and 121 miles due South of the 
Western White House.   see my website at  www.collinsandharrisradios.com
----- Original Message ----- 
From: "Henry Kolesnik" <kolesnik at sbcglobal.net>
To: "Mac McCullough" <w5mc at austin.rr.com>; <ToddRoberts2001 at aol.com>; 
<premium-rx at ml.skirrow.org>
Sent: Friday, August 05, 2005 3:16 PM
Subject: Re: [Premium-Rx] Harris R-2420 on the E-place

> There is a significant difference between a R-390 and R-390A, but to the 
> untrained eye they look the same.
> The difference between a R-274 made by Hallicrafters and Hammurlund 
> doesn't need a trained eye.
>
> 73
> Hank WD5JFR
> ----- Original Message ----- 
> From: "Mac McCullough" <w5mc at austin.rr.com>
> To: <ToddRoberts2001 at aol.com>; <premium-rx at ml.skirrow.org>
> Sent: Friday, August 05, 2005 2:56 PM
> Subject: Re: [Premium-Rx] Harris R-2420 on the E-place
>
>
>>I think you have the general answer here, the "R"  numbers are designators 
>>by the Govt.  to indicate a COMMON nomenclature for in this case 
>>receivers, the intent of the R numbers was to provided commonality between 
>>various manufactures to build the same item meeting the same specs. 
>>dropping back to the most obvious example is the famed Original Collins 
>>govt designated R-390 and the later R-390A  I forget the number of vendors 
>>who ultimately produced 390A's  but it's 12 or so ... .    at the outset 
>>the productions were by Collins, but as time wore on others bid in and won 
>>contracts,  the sets still had to meet the same exact performance 
>>standards, and in fact most set builders still had to buy certain parts 
>>from Collins only, the most common being the main PTO, till finally 
>>another vendor became a qualified vendor of this PTO,  but the point, in 
>>govt parlance, a 390A was a 390a not withstanding who was the manufacture 
>>..  Harris answered the call for a design requirement as well as  possibly 
>>a few others, that meet the 590 ability's,  but it was the Harris design 
>>that won the requirements that created the RF-590   remember the RF is 
>>exclusively a Harris designator, not to be confused with the popular R 
>>designator used
>> in govt. parlance..  so Harris was off and running,  till some dip 
>> contracting officer said Whoa.  we got to assign a R number and put this 
>> out for public bidding.   so Harris agreed,  why not,  damn near 
>> everthing inside a RF-590 was exclusive and or sole source from Harris, 
>> so of course Harris prevailed in the open bidding competition, and 
>> produced a R-2420 .. sure it had minor differences to make it paticular 
>> to it's self, thus the MS power connector and such,  BUT the govt still 
>> didn't buy the RIGHTS for the set.  so it was always under the final 
>> control of HARRIS what costing is/was ...   Important point here,  dont 
>> think Harris had a blank check to charge whatever they wanted, even sole 
>> source agreements are audited on an ongoing basis, and questioned 
>> frequently as to justification of costing..  but smart company's know how 
>> to respond.. Harris is smart, no doubt on that issue.. for the continued 
>> education on this see the R-2368   it is clearly a 590A Harris receiver.. 
>> where with Harris it carried the RF-590A  moniker.. eventually as these 
>> contracts wear on and these were multi multi year contracts,as I recall 
>> the 590A was a constant production item for well over 10 years, as the 
>> life of one contract expires and another is bid or let, it was presented 
>> that " Hey if you let us sell you the 590A  and lets drop this R-2368 " 
>> we can offer a different selling price [ lower ]  especially as the 
>> popularity of the set grew and other customers bought it as a COTS item 
>> ..    COTS [ commercial off the shelf ]  the Navy was under pressure to 
>> conform to using where at all possible COTS equipment... so the R 
>> designator was dropped..
>> I hope I have made this a bit clearer, and not convoluted..  but in 
>> general terms I have given you a contractors contracting picture of 
>> events and sequence's   thanx  mac/mc   w5mc
>>
>>
>> Located 46 miles due North of the Alamo, and 121 miles due South of the 
>> Western White House.   see my website at  www.collinsandharrisradios.com
>> ----- Original Message ----- 
>> From: <ToddRoberts2001 at aol.com>
>> To: <premium-rx at ml.skirrow.org>
>> Sent: Friday, August 05, 2005 8:05 AM
>> Subject: [Premium-Rx] Harris R-2420 on the E-place
>>
>>
>>> Hi all, I saw this listing for a Harris R-2420 recently and was 
>>> wondering if
>>> anyone knows what model this is most similar to?
>>>
>>> http://cgi.ebay.com/HARRIS-RF-590-A-Communications-Receiver_W0QQitemZ579567860
>>> 0QQcategoryZ4673QQrdZ1QQcmdZViewItem
>>>
>>>
>>> It looks to me like it is most similar to the civilian version RF-590A. 
>>> I see
>>> there are some differences in the connectors on the rear panel - it has 
>>> a
>>> military-style power connector instead of the IEC connector found on the 
>>> civilian
>>> version plus it looks like a different remote-control connector on the 
>>> back.
>>> The internal module layout looks identical to the RF-590A. 73 Todd 
>>> WD4NGG
>>>
>>> _______________________________________________
>>>
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>>>
>>
>>
>>
>>
>> _______________________________________________
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>
> 