[GreenKeys] question about TTY signals and Telephone Signals

[Eugene Hertz]

Thanks everyone for the good news! I might be printing ITTY from my office soon! Thanks
Eugene

>-----Original Message-----
>From: Larry Tighe [mailto:larryradio at worldnet.att.net]
>Sent: Monday, January 2, 2006 06:14 PM
>To: 'Eugene Hertz', 'GreenKeys'
>Subject: Re: [GreenKeys] question about TTY signals and Telephone Signals
>
>Eugene, 
> 
>Telephone pairs were made to prevent cross talk. For example, rotary 
>dialing would be very "spiked" and you probably would'nt hear it on another 
>cable pair. 
> 
>My guess, Go for it. 
> 
>Lar 
>K2JIA 
>www.antiquetelephone.com 
> 
> 
>Hello all. 
> 
>I recently purchased a house and in it there is fairly extensive telephone 
>wiring. Each room has 6 pair and in the basement there are punchdown blocks 
>and a multi-line telephone system. I believe it is an analog system as the 
>phones that are used use RJ-11 not RJ-45 (although that might not tell the 
>whole story). Only 2 pair are used for each phone 
> 
>My ham shack/workshop is in a spare bedroom on the 2nd floor. My office is 
>on the first floor. I was thinking of using the existing wiring to create a 
>loop from the shack down to the office. Does anyone know if the proximity of 
>60ma current loop signals might cause interference to the telephone signals 
>running adjacent to them on the same cable? Please note that I might also 
>want to run 60ma polar for a teletype ticker model (401?) if that makes 
>matters better or worse. 
> 
>Please give me your opinions of whether you think this is a bad idea to run 
>them together. 
> 
>thanks 
>Eugene 
> 
> 
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