8600 Fan noise

Henkka · March 25

Hi,

My 8600M went pretty much directly to recommended modification after I received the radio. Radio works now as designed and noise floor is around 32 dBA. Thank you Tim, Cathy and Norbert for your light speed customer service.

73
Henkka

DM2DZM · April 1

Helllo,

I immediately made gestures to install the new brackets. The new black ones are probably slightly better in terms of dimensions and also somewhat more stable in terms of material. The distance to the sheet metal is also good all round, visually I can't see that anything is touching it, although you can't rule out the possibility of vibration transmission from the brackets to the sheet metal. But it seems to me that this fan also has considerable resonances of its own. I also fixed the HDMI cable so that it no longer flutters around, but this is probably not the cause of the levels. The fan is now relatively fixed. I also had to remove the lower housing shell, otherwise I wouldn't have been able to get the fan onto the bracket. So much for the QRL hi.
Now the results. The normal level is now around 43-45db, so that's insignificantly less than before, so unfortunately it hasn't been a total success. I've already mentioned that the fan may not be running smoothly, so it's still humming away. My inquiries about the data for a replacement fan from NOCUTA or similar have so far gone unanswered. In my opinion, the fan that is now installed should be replaced in order to be able to assess the quality of a replacement, as this fan, even if it is not installed, is clearly too loud in contrast to the PC fans available here, but their electrical data probably do not fit. This fan produces a good 20db, the PC fans 7db!

73 de Peter DM2DZM

DM2DZM · April 1

also i waiting for new FLEX info

DM2DZM · April 1

here agn the last Measurement

Bildschirmfoto 2025-03-31 um 18.17.22.jpeg

DM2DZM · April 10

Since my fan is apparently not quite right either, it should be replaced. But I can't get any information from either the manufacturer or the dealer about what type of fan I could install. Unfortunately, I can't get any answers via the ticket request either!

Does anyone here have a fan type that works with the software, not everyone works with 12V and 3 pin!

tnx 73 de Peter

DM2DZM

DM2DZM · April 28

No response for almost 1 month now, neither a replacement fan nor a replacement, there are no more answers to inquiries from the manufacturer!

Great dealings with customers

DM2DZM · May 2

I have now tried several times to get a different type of fan but neither the manufacturer nor the seller respond at all! This is a great pity and not a positive reference for FLEX sri.😫

The original fan in my case also seems to be a bit loud at 45db and should be replaced but I didn't get one, just the new rubber brackets which don't reduce it

73 de Peter DM2DZM

DM2DZM · May 16

Now and msg from GI4NKB , Frank have a fan found and best values

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These are the old figures after supposedly being repaired..

Average 39.6 db-A

Minimum 36.9 bb-A

Maximum 48.9 db-A

Peak 52.5 db-A

Quite some difference! Max has dropped by 8.4 db-a and peak by 10.8 db-A!

For reference these are the original results I sent to Flex when I first complained.

Avg/Leq 41.1

Max 56.1

Peak 62.2

So then, I've dropped the Max noise by an astonishing 15.6 db-A and peak noise by an incredible 20.5 db-A over the radio in it's original state!

———————————————————————————————-

is vy nice tnx Frank for Info and help for me

hr happy now 73 de Peter

DM2DZM · May 23

Hello,

and I got my new fan and installed it right away, it's a good 20db quieter than the one that was in it, I really don't understand why FLEX didn't manage to name a suitable fan in many weeks or do they not want to do that at all and prefer to continue selling only a lot of expensive RIGs!

73 de Peter

8600 Fan noise

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