[QuadList] TO-4s in TR-70s

[Don Norwood]

Hi Guy:

The March '66 RCA Television Tape Catalog does indeed show a number of pics 
of the TR-70 equipped with the TO-4, and it's described in the text.  Now 
whether they really supplied them that way, I do not know.  Over the years, 
there have been a number of ads, brochures, catalogs, etc. from both RCA and 
Ampex that had something wrong with the images.

Don

----- Original Message ----- 
From: "WVGO" <WVGOfm at aol.com>
To: <quadlist at quadvideotapegroup.com>
Sent: Monday, May 18, 2009 1:29 PM
Subject: Re: [QuadList] TO-4s in TR-70s


> Hi Chris....
> I've never seen, in person,  a TR-70 with a TO-4 installed.  I worked with 
> plenty of them in TR-4s, 22s and 50s though, and I concur.....not that 
> great.  I might have seen some early RCA photos that showed one in a 70. 
> Maybe some very early production 70s received them.  I have two TR-70As 
> and they both have 529s in them.  Perhaps RCA offered a retrofit kit to 
> incorporate the 529, as the bridge front panel is entirely different over 
> what would be required for a TO-4.   The ones in the picture appear to be 
> A's to me, as they do not have the "notched" end panels, and appear to 
> have the silver metal front panels on the bridges, compared to the painted 
> RCA blue panels on Bs and Cs....a little hard to tell from that photo 
> though.
> Guy
>
>>
>> Subject:
>> Re: [QuadList] History - what is the REAL story
>> From:
>> chill315 at aol.com
>> Date:
>> Sun, 17 May 2009 13:39:06 -0400
>> To:
>> quadlist at quadvideotapegroup.com
>>
>> To:
>> quadlist at quadvideotapegroup.com
>>
>>
>> The TR-70s in the photos are the B versions.  The way to tell is that 
>> they have the Tektronix 529 as the scope.  The A version had the RCA 
>> TO-4.  A scope that in my opinion was not that great.
>>
>> Chris Hill
>>
>
>
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