FDM-DUO USB Failure


Chris Bartram
 

Hello Vianney,

I appear to have damaged the TX USB port of my FDM Duo. I would very much like to repair this myself. Is it possible to have some information about this part of the circuit? Perhaps a limited part of the schematic and a layout drawing? I would be happy to receive this under a non-disclosure agreement.

I have the skills and equipment necessary to do a repair. I spent my career as a design engineer working in RF and microwave circuit design, and have retained much of my equipment on retirement.

Chris Bartram G4DGU



--
Chris Bartram G4DGU


Simon Brown
 

Chris,

I can always lend you a working DUO, I have two but only need one for now.

From: EladSDR@groups.io <EladSDR@groups.io> on behalf of Chris Bartram via groups.io <chris@...>
Sent: 07 December 2022 14:34
To: EladSDR@groups.io <EladSDR@groups.io>
Subject: [EladSDR] FDM-DUO USB Failure
 
Hello Vianney,

I appear to have damaged the TX USB port of my FDM Duo. I would very
much like to repair this myself. Is it possible to have some information
about this part of the circuit? Perhaps a limited part of the schematic
and a layout drawing? I would be happy to receive this under a
non-disclosure agreement.

I have the skills and equipment necessary to do a repair. I spent my
career as a design engineer working in RF and microwave circuit design,
and have retained much of my equipment on retirement.

Chris Bartram G4DGU



--
Chris Bartram G4DGU






Chris Bartram
 

Thank you, Simon.


Fortunately, I'd been planning to acquire second Duo for some time, and I managed to locate one on Dartmoor! All being well, I'll be picking that up tomorrow, so I won't need to take advantage of your kind offer. I've been using a Duo for a few years now and it has been built into what is still the beginnings of a system which could (theoretically!) give me access to all of our licenced bands from 136kHz to 47GHz.


73


Chris G4DGU



On 07/12/2022 16:42, Simon Brown wrote:

Chris,

I can always lend you a working DUO, I have two but only need one for now.

From: EladSDR@groups.io <EladSDR@groups.io> on behalf of Chris Bartram via groups.io <chris@...>
Sent: 07 December 2022 14:34
To: EladSDR@groups.io <EladSDR@groups.io>
Subject: [EladSDR] FDM-DUO USB Failure
 
Hello Vianney,

I appear to have damaged the TX USB port of my FDM Duo. I would very
much like to repair this myself. Is it possible to have some information
about this part of the circuit? Perhaps a limited part of the schematic
and a layout drawing? I would be happy to receive this under a
non-disclosure agreement.

I have the skills and equipment necessary to do a repair. I spent my
career as a design engineer working in RF and microwave circuit design,
and have retained much of my equipment on retirement.

Chris Bartram G4DGU



--
Chris Bartram G4DGU






--
Chris Bartram G4DGU


Vianney Colombat
 


Hello Chris,

please open a support ticket here: http://support.eladit.com/open.php

Regards,

Vianney


Il 07/12/2022 15:34, Chris Bartram ha scritto:
Hello Vianney,

I appear to have damaged the TX USB port of my FDM Duo. I would very much like to repair this myself. Is it possible to have some information about this part of the circuit? Perhaps a limited part of the schematic and a layout drawing? I would be happy to receive this under a non-disclosure agreement.

I have the skills and equipment necessary to do a repair. I spent my career as a design engineer working in RF and microwave circuit design, and have retained much of my equipment on retirement.

Chris Bartram G4DGU




--
Vianney Colombat
ELAD Italy



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