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Looking for Yeasu tun/lin TTL protocol

 

Hey guys, here is some history to help understand my need;

in the ft8X7 and ft100 radios Yaesu was offering a mini din 8 pin connector that had 3 functions, CAT TTL, TUNER, LINEAR, through simple config in the radio, this is actually back in FT710 that brought back CAT3 via TUN/LIN minidin8 connector.

between the these two groups of radios they dropped the CAT TTL function of the TUN/LIN mini din connector for a separate RS232 connector, ?part of that minidin8 TUN/LIN connector dual usage is a simple TTL connection using the same pin out as the CAT TTL as for the ft8X7 connector.

I am looking for the commonly used TTL ?communication protocol to control the linear via the TUN/LIN minidin8 connector.

let me be clear I am NOT looking for the Yeasu CAT protocol, I don’t think (could be wrong?) they use there CAT COMMANDS for this?

let me know.

specific info on the link specification (speed, etc…) would also help me.

73?

Richard VE2DX
 

The RS-232 connector presents the same information except it's not TTL. TTL stands for transistor-transistor logic and has generally referred to using 5 volt logic levels. Most ham radio implementations are actually open collector pulled to ground.
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It's still a Yaesu CAT interface.
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73,
Chris, K9EQ
 

Thanks Chris, I am aware of the diff between RS232 and TTL, if you have a chance please look in the support section of my website WWW.VE2DX.COM?for my Whitepaper called TrueTTL.

I need TTL connection for some of my Yeasu oriented projects, I am hoping the Yaesu Protocol used over TTL on the TUN/LIN connector might be usable for my needs? But can’t find any documentation on it, and no it isn’t CAT, except on the FT8X7, FT100, and FT710 when properly configured, all other radios don’t support CAT on that connector even if it is EVERYWHERE!?!

73

Richard VE2DX
WWW.VE2DX.COM
 

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Hi Richard,

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This is the data I have.? I’ll look for some more if I can remember.

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73

Harley Burton

N5BFB

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From: [email protected] <[email protected]> On Behalf Of VE2DX
Sent: Saturday, February 3, 2024 4:54 AM
To: [email protected]
Subject: [YaesuTuner] Looking for Yeasu tun/lin TTL protocol

?

Hey guys, here is some history to help understand my need;

in the ft8X7 and ft100 radios Yaesu was offering a mini din 8 pin connector that had 3 functions, CAT TTL, TUNER, LINEAR, through simple config in the radio, this is actually back in FT710 that brought back CAT3 via TUN/LIN minidin8 connector.

between the these two groups of radios they dropped the CAT TTL function of the TUN/LIN mini din connector for a separate RS232 connector, ?part of that minidin8 TUN/LIN connector dual usage is a simple TTL connection using the same pin out as the CAT TTL as for the ft8X7 connector.

I am looking for the commonly used TTL ?communication protocol to control the linear via the TUN/LIN minidin8 connector.

let me be clear I am NOT looking for the Yeasu CAT protocol, I don’t think (could be wrong?) they use there CAT COMMANDS for this?

let me know.

specific info on the link specification (speed, etc…) would also help me.

73?

Richard VE2DX

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