K3 and the THP HL-1.5KFX

[Peter Chamalian]

Has anyone successfully interfaced a K3 and THP HL-1.5KFX amp so the K3
tells the amp what band to be on?  If so, I would appreciate specifics on
how you did it.

 

Thanks,

 

Pete, W1RM

 

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[Phil Salas]

“Has anyone successfully interfaced a K3 and THP HL-1.5KFX amp so the K3 tells the amp what band to be on? If so, I would appreciate specifics onhow you did it.”

Peter – Just connect the K3 0123 band data outputs to the THP ABCD band data inputs.  On the THP, tell it is a Yaesu input.  The only issue is that when the THP amp is off, it loads down the K3 band data outputs.  The THP 1.5 and 2.5 amps really need isolation diodes to keep this from happening, though it is really only a problem if you are powering other devices in parallel with a turned-off THP amp.

Phil – AD5X
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[Bill K9YEQ]

Peter,

I have the 2.5 and I use the cable supplied by the manufacturer.  It works
super, whether or not the THP is on or off.  I have had no issues.

73,
Bill
K9YEQ


-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Peter Chamalian
Sent: Sunday, August 26, 2012 8:07 AM
To: [hidden email]
Subject: [Elecraft] K3 and the THP HL-1.5KFX

Has anyone successfully interfaced a K3 and THP HL-1.5KFX amp so the K3
tells the amp what band to be on?  If so, I would appreciate specifics on
how you did it.

 

Thanks,

 

Pete, W1RM

 

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