[GreenKeys] Model 32

[Ralph Irish]

E. ?? (Don't know your name.) 

The Rangefinder is used to adjust things as parts wear out a bit. The idea is to 
keep the actual selection as close to the center of each bit as possible. As parts 
wear, this can change slightly, and if the error rate becomes too high, some 
experimenting with the Rangefinder can compensate a bit. Eventually, some 
parts may have to be replaced. 

Playing with the Rangefinder to get a signal of another speed to print with fewer 
errors has been around for a while. It is NOT a cure-all, however. There are 
also situations where one machine might be running with a 7.0 unit code, and 
another on 7.41 unit code. 7.0 unit code 'sounds' faster, but the character count 
is almost exactly the same. It is just that each character complete a few milli- 
seconds faster sometimes causing the machine to latch the clutch for one or two 
milliseconds, before releasing it for the next character. There are a lot of combos 
of WPM gear speed and unit code. 

As someone mentioned, playing with the Rangefinder has little or no effect on 
transmit speed. 

Good luck, and do keep track of 'working settings' if you decide to play with the 
Rangefinder. 

73, 

Ralph - W8ROI 

- - - - - - - - 

From: "E." <hanyou at xsmail.com> 
To: "AA6RK via GreenKeys" <greenkeys at mailman.qth.net> 
Sent: Friday, March 26, 2021 4:07:45 PM 
Subject: Re: [GreenKeys] Model 32 


I had thought - or have always understood that the rangefinder is for adjusting varied loop currents due to location and distance. How can a TT properly print at motor frequency if the other side is sending it at a different speed (thus what the gears are for)? The rangefinder can’t compensate for that — or that much, can it? 


> On Mar 26, 2021, at 3:02 pm, Steve Garrison <steve.n4tty at gmail.com> wrote: 
> 
> You guys have me thoroughly confused! My M28 is at 60 WPM and I go back and forth between i-Telex, ITTY, and RTTY all the time? 
> 
> Steve G./N4TTY 
> 
> From: greenkeys-bounces at mailman.qth.net <greenkeys-bounces at mailman.qth.net> On Behalf Of WAYNE 
> Sent: Friday, March 26, 2021 3:43 PM 
> To: Jeffrey Angus <jdangus at att.net>; greenkeys at mailman.qth.net 
> Subject: Re: [GreenKeys] Model 32 
> 
> Jeff, 
> 
> Very good point! If you send at the wrong speed the receive end would have to move his rangefinder. Dont think most would do that. 
> 
> 73, 
> 
> Wayne 
> KB1FDW 
>> On 03/26/2021 3:24 PM Jeffrey Angus < jdangus at att.net> wrote: 
>> 
>> 
>> On 3/26/21 1:16 PM, Duncan Brown wrote: 
>>> You need to decide what speed you want to copy. But you don't want to 
>>> have to change gears whenever you want to switch between ITTY and 
>>> I-TELEX, so the range control is the simplest way to cover both 60 & 
>>> 66 WPM. 
>> Here we go again. 
>> The Ranger finder only helps you copy the wrong speed. 
>> It does nothing to your transmit speed. 
>> i-Telex will only work if your machine is running at 66 WPM. 
>> 
>> 
>> -- 
>> "I am a river to my people." 
>> Jeff-1.0 
>> WA6FWI 
>> www.foxsmercantile.com 
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