[GreenKeys] UGC74B Setup

John Vendely jvendely at cfl.rr.com
Mon Nov 12 19:21:11 EST 2012


Hi Mark,

The UGC-74 is a fairly complex piece of gear with numerous features and 
options, so it does take some time to learn. Assuming you have set the 
internal interface panel switches for "KSR" operation, you have two 
modes to choose from, LINE MODE, and CHARACTER MODE, selectable at 
power-up.  Upon powerup, the machine prints an initialization message, 
then prompts you to select LINE or CHARACTER mode.

In LINE mode, the machine stores a line of typed text, transmitting the 
entire line at the selected baud rate when you hit RETURN.  This also 
applies to printing of received characters.  CHARACTER mode transmits 
each character as it is typed.  Upon selecting CHARACTER mode, the 
machine prints the prompt:

"LOCAL ENTRY PRINT? (Y/N)"

Type "N" "CR" to prevent those echo characters you describe.  Note that 
in CHARACTER mode, you must send line feeds manually, as with a real TTY.

If there's a way to suppress local copy altogether in either LINE or 
CHARACTER mode, I'm not aware of it.  In my GRC-122E I have an extra 
toggle switch on the SA-1650 control panel which bypasses the current 
loop to the printer side of the front UGC-74B, so I can suppress local 
copy when sending tape from the TT-76.  This saves a lotta paper when 
transmitting call tapes.

One odd characteristic of the UGC-74 in KSR CHARACTER mode is that it 
seems you cannot "type ahead" of the machine.  I can type much faster 
than 60 wpm, and when doing so, the UGC sends errors.  The front panel 
XMT lamp flashes when this occurs.  I find I must pace myself when 
typing to prevent this.  This is not a problem with mechanical TTYs, as 
tactile feedback from the keyboard tends to prevent this.  But it's 
quite annoying on the UGC, whose electronic keyboard gives you no such 
feedback--except for that little XMT lamp.  I'm curious if others have 
experienced this, if there's a fix--or whether I'm simply doing 
something wrong.  I have not noticed this effect in LINE mode, though 
for radio operation, the delay while a line of text accumulates is 
annoying to the receiving operator.

73,

John K9WT

On 11/12/2012 2:16 PM, n1jzv at midmaine.com wrote:
> Looking for some advice and how to on the 74B.  During my exciting first
> two way comm with the machine I ended up with a double local copy print.
> What I would like to know is can I set it up with no local copy so I can
> save paper or what is the best way?  I have the manual and have read it
> but it seems I get different results each time I start it up.
>
> Thanks
> Mark
> K1HF
>
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