Atari 800XL RF cable (and I/O cable availability?)

Alexandre Souza alexandre.tabajara at
Thu Jan 22 17:09:53 CST 2015

> 1) When hooking this up to a TV via the RF input - is there any "magic" 
> involved, or will a suitable braided co-ax TV cable with a phono connector 
> added at the Atari end do?  I know it "works" because I lashed one up 
> quickly (and I do mean quickly, no soldering involved) and ran the machine 
> from a stray +5V PSU, which obviously resulted in a fuzzy picture - but 
> then when it came to making a good one, I got to thinking about those 
> little antenna switch boxes that US machines often seemed to come with, 
> and wondering if there were a bunch of passive components in there which 
> make a difference to the signal quality.

    Forget the RF output, use the composite monitor connection, there are 
schematics for the cable on the web. Anyways, a proper 75 ohms coaxial cable 
from the computer to the tv (with adequated connectors) should work

> 2) Does anyone have any spare I/O cables, or know of a source of the 
> connectors so I can make my own?

    Mostly impossible to find the connectors alone. Best has 
the cables at a fair price. Or you could use ebay.

> (I suppose while I'm here I may as well ask if anyone just happens to know 
> what voltage power supplies the 1050's and 850 need, but I'm sure I can 
> dig the answers to that up online if needed)

    Sure :) While you're on google, get the schematics and build a SIO2SD 
device, you'll need it! ;o)

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