Quadra connection to Flex 6300

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  • Question
  • Updated 2 years ago
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can someone help me understand how I might connect my yaseu vl 1000 quadra amplifier to the flex 6300 so that it provides band change and frequency information. I use HRD software.
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Posted 4 years ago

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Paul W5PF

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I use the 6500 and the Yaesu Quadra. I use DDutil to provide band data to the amplifier wih no problems.

Paul W5PF
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Jon - KF2E

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Official Response

Here is a document I wrote on doing what you are asking.


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Bill NE1B

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Hi Larry,

I ordered the ACC USB-Serial cable from Flex Radio Store to interface my 6500 to the QUADRA VL-1000 Amplifier, but need to wire it to the 8 pin din connector.  Your pdf file is  no longer available.  Has there been an update?

Bill, NE1B
Photo of Jeff-W7NEE


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I would be interested in thispdf file as well.... I also plan to interface my flex with the 6600. I have used a Flex 5000 and Quadra together with DDutil for the past 8 years... but would be interested into see your Document Jon.
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Larry: KE2YC

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Hi Larry,

If you follow Jon - kf2e post, all will be good.  I have done the same and works great.  Any Questions just give me a shout and I'm sure Jon will help also.

Larry - ke2yc
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Lawrence Gray

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I use DDUtil with an FL-7000, setup using the kf2e post, and it works great. I have my laptop in a dock, which has s parallel port.

Larry, W1IZZ
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John Culliton

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You can wire the 4 band wires plus ground by the din picture in the Quadra manual but be sure you have the newer manual as there was a pin number mistake in the old manual. Setup is in the radio usb tab. No third party program needed.
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Bill NE1B

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Hi John,

Which cable did you use?  Was it a mouser cable or Flex cable?  Is there a part #?

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John Culliton

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An Amazon cable FTDI C232HM-DDHSL-0, that was linked in another thread. Plugs into the back of the radio and wired to the din plug on the amp.