No communication between computer and radio.

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  • Updated 4 years ago
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Can not get Flex 6500 to talk to computer. Have it connected direct to computer with an ethernet cable says radio not responding. Do I need to set up computer? Need some type of card. I thought it only needed an ethernet cable. finds radio so you can click on connect but then says radio not responding. Tried power down but didn't help. Thanks for helping out.
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Ed Brenner

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Posted 4 years ago

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John n0snx

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computer is not giving the radio an IP address... I have had this same issue.... I fixed mine with a simple hub switch or you can connect the radio to your home router and let the router set up an IP for the radio...
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Ed did you read the manual and setup CAT software this is one of the items that allows the Flex to talk to the computer and other programs and even other com ports.

I'm traveling and only have my tablet otherwise I would point you in the right direction.

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If you have a router it should be easier to connect the Flex to the network and then any PC on the network with SmartSDR installed should find it and connect. If not have you followed the instructions found in the manual?

page 41 of FLEX-6000 Signature Series – FLEX-6000 Hardware Reference Manual
8.4.2 Direct PC Connection (Link-Local)
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Ed Brenner

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 that's what I did a direct connection to  the computer. If I look at the cat software when I power up the radio it will post the radio serial number and IP address. sits their working for a while then it clears it out. Must be somewhat talking. Got to be something stupid I ain't doing. Bought the radio used less than a year old, was working good man passed on. Don't suspect anything with radio, 99% sure it's me.

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Ed: You might want to reach out to any locals that have Flex 6000 series radios to help you. Can you post your location?
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Ed Brenner

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I live in Murrells Inlet, SC. Any one close by ?
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Bill N5TU

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Hi, Ed:

Do you have a firewall in your computer?  Mine quit communicating about a week ago.  My other computers communicated just fine.  After going nuts, I finally shut off the McAfee firewall, and everything was back to normal.  (I am not a computer type, so it was a matter of trial and error.)

Good luck & 73,
Bill, N5TU
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Tim - W4TME, Customer Experience Manager

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Official Response
I have changed this post to a problem topic and converted this topic to a support HelpDesk ticket ( for expedited issue resolution.  If anyone else is experiencing an issue similar to this one, please submit a HelpDesk support ticket for issue resolution.