[GreenKeys] Salvaged Bell System 28

[Don Robert House]

WONDERFUL NEWS Larry

Perhaps you could make a video of the assemblage in action!

Don
K9TTY



On 9 Jul 2009, at 5:53 PM, Larry Tighe wrote:

Well, Jack suggested I put the mark and space of the Bell System Model  
28 I
picked up off the curb last week into the ST-8000A transmit tones.

It has 2125/2275 for W1AW on the receive side and   1070/1140 on the
transmit side for the Bell modem 43B3 system in the base of the tty.

Worked perfectly!  The machine requires Figs H Ltrs to clear any  
previous
"unblind" codes for the printer.  Then type ZA or RZ or FX and the  
"unblind"
magnet frees the printer to print.

So, copied W1AW tonite and converted the input tones to the Bell tones  
and
the machine copied perfectly.  I was fortunate to find lots of prints  
and
flow charts inside the base of the machine.

Thaks for the ideas Jack.

73's

lar
K2JIA

www.antiquetelephone.com

______________________________________________________________
GreenKeys mailing list
Home: http://mailman.qth.net/mailman/listinfo/greenkeys
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:GreenKeys at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html