[GreenKeys] How hot is too hot? (Teletype 32)

[Jeffrey Golas]

Unless you plan to leave it on 24/7 I dont think its needed. They all ran super hot and are still around to tell about it. Ill compare your CCU to mine but that may be a normal Telex CCU.

I have a 33 that has a telephone cradle built into it, and it completely enclosed the CCU. That poor thing is BAKED!

I like the WU logo on the dial too - are you in the US?

Jeff

> On Sep 5, 2022, at 11:34 AM, Andy KN4UCL <kn4ucl at gmail.com> wrote:
> 
> 
> if I was to secrete a small fan in there somewhere just to move the heat around... any thoughts about where I could safely steal 5 or 12v from my Teletype?
> 
>> On Mon, Sep 5, 2022 at 11:31 AM Andy KN4UCL <kn4ucl at gmail.com> wrote:
>> Hey Jeff - I did a modification to some of the resistors to change from 60 to the 40ma loop current (European) standard used by i-Telex. Apart from the heat, it seems to run i-Telex just fine 😁  Attached is a better photo (red circle where things are hot) ... cheers!
>> 
>> 
>> 
>> 
>>> On Mon, Sep 5, 2022 at 10:42 AM Jeffrey Golas <jeffg at junknet.net> wrote:
>>> Can you take another pic but zoomed out/farther out?  That looks a lot different than Im used to, I think.
>>> 
>>> Considering how new those boards look I think youre fine, some of the ones I have are baked to golden brown lol. All depends if the loop current is set properly.
>>> 
>>> Jeff
>>> 
>>> > On Sep 5, 2022, at 10:37 AM, Andy KN4UCL <kn4ucl at gmail.com> wrote:
>>> > 
>>> > 
>>> > Hey folks, I recently got my M32 up and running on i-Telex and all is good but things are getting a little toasty and I am not sure how much I need to worry.  Please see attachments - the circles I drew show where it's getting hot.  120-130F if my Harbor Freight thermometer is to be believed.
>>> > 
>>> > As there is quite a bit of room in there, I was wondering if a small fan would be helpful.  
>>> > 
>>> > Any thoughts appreciated!
>>> > 
>>> > thanks
>>> > Andy
>>> > 
>>> > 
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