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  1. Yaesu-FT-980
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Anyone seen fans like mine?

 

It was bought like this, I can't remember the OM story but he travelled the world with it....seems to function fine
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M?FOX | Chesterfield UK | IO93HE | Icom IC-7800 | WAB SK46

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Paul. There was a mod doing the rounds which involved adding an extra fan on the back plane. The reason was that there are two heat producing modules, the PA unit and the power supply side by side. It was well known that the main heat sink across the back and the single fan cooling the PA unit still resulted in overheating. My one has been converted with a separate bolt on panel with the extra fan colling the power eupply module.


Peter G0LQU

Paul M0FOX wrote:

It was bought like this, I can't remember the OM story but he travelled the world with it....seems to function fine
--
*M?FOX | Chesterfield UK | IO93HE | Icom IC-7800 | WAB SK46*

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I'd like to connect the fans internally rather than via ACC1 is yours similar,? cheers
--
M?FOX | Chesterfield UK | IO93HE | Icom IC-7800 | WAB SK46
 

Hi Paul. Well actually the second fan on mine is powered from a length of flex and an independent mains plug! Not sure if you could parallel up the original connection to the existing fan to run the second one. (too much current?) Can't understand why yours is connected to the ACC1.

Incidentally I am selling another one of my 980's (with SSB fault) on ebay if you're interested!

Peter G0LQU

Paul M0FOX wrote:

I'd like to connect the fans internally rather than via ACC1 is yours similar, cheers
--
*M?FOX | Chesterfield UK | IO93HE | Icom IC-7800 | WAB SK46*
 

Peter, I did see another 980 with the second fan fitted and that ran from ACC1, is the original fan 13v, maybe as they run continuously from ACC1 that was the intention, never had the lid off busy with other stuff....i'll have a peep on Ebay, cheers
--
M?FOX | Chesterfield UK | IO93HE | Icom IC-7800 | WAB SK46
 

If it's the one from St Albans I'm already watching it lol
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M?FOX | Chesterfield UK | IO93HE | Icom IC-7800 | WAB SK46
 

Yes that's the one!

Looks a flop at the mo but some time left.

Best wishes

Peter G0 LQU

Paul M0FOX wrote:

If it's the one from St Albans I'm already watching it lol
--
*M?FOX | Chesterfield UK | IO93HE | Icom IC-7800 | WAB SK46*
 

I want the mic lol

Cheers
--
M?FOX | Chesterfield UK | IO93HE | Icom IC-7800 | WAB SK46
 

I'm afraid I might be the source of this particular mod. Back in the day I did this to reduce noise when running my rig in contests.

A description of the mod, reasons, and temperature measurements are in the files section: Files -> 06-Mods -> Adding a super-quiet always-on secondary cooling fan.pdf?

Hope this helps,

--
-Mat Breton, N8TW

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