[K3] Tokyo High Power

[kd1na]

Does anyone use the Tokyo High Power linear amp (HL-1.5kfx) with their K3? If you do I need to ask how you connect the auto band switching to the linear with the K3?

The manual doesn't refer to the K3 at all but refers to Kenwood. It appears to use a Serial connection from the rig to the amp and is restricted to 9600 baud comm speed.  I have a P3 and it requires a 38400 baud connection. For a test I tried to change the baud rate to 9600 only to have the K3 change it back to 38400 (note the P3 is connected during this time). It appears that you cannot use the P3 at the same time you use auto band switching in the THP linear. Am I correct in this assumption and if I am not could you please enlighten me.
Thanks in advance.
Dave KD1NA
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[Bill K9YEQ]

Dave,

I use a THP2.5.  I bought the interface cable for the radio from a resource
that sold the cable good to go from the THP to the K3.  If you want to build
your own, then reference both manuals and construct.  I didn't need to work
on baud rates which really are unnecessary.  The signal between the K3 and
the THP amp are just fine with no tinkering.  You do need a direct cable
from the K3 to your amp to do auto bandswitching.

Bill
K9YEQ


-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Dave & Jeanne
Robertson
Sent: Sunday, October 10, 2010 4:52 PM
To: Elecraft
Subject: [Elecraft] [K3] Tokyo High Power

Does anyone use the Tokyo High Power linear amp (HL-1.5kfx) with their K3?
If you do I need to ask how you connect the auto band switching to the
linear with the K3?

The manual doesn't refer to the K3 at all but refers to Kenwood. It appears
to use a Serial connection from the rig to the amp and is restricted to 9600
baud comm speed.  I have a P3 and it requires a 38400 baud connection. For a
test I tried to change the baud rate to 9600 only to have the K3 change it
back to 38400 (note the P3 is connected during this time). It appears that
you cannot use the P3 at the same time you use auto band switching in the
THP linear. Am I correct in this assumption and if I am not could you please
enlighten me.
Thanks in advance.
Dave KD1NA
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[Ken Kopp-3]

Hi Dave,

I have a THP HL-1.5KFX that I have mated to my K3/P3
pair and it works flawlessly.  I purchased the amplifier from
Array Solutions and they supplied a control cable that uses
the ACC connector on the K3.

The P3 uses the RS232 connector.

73! Ken Kopp - K0PP
       [hidden email]




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[Ken Kopp-3]

Dave,

If you happen to have the PR6 ... or other ... six meter
preamp, be aware that it's power is supplied via the
ACC jack, and a control cable for the THP amp will
need to provide an additional wire for this.

73! Ken Kopp - K0PP
       [hidden email]


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[Joe Subich, W4TV-4]

The PR6 gets its power from the +12V jack.  It gets a control
signal (on/off by band) from the ACC jack (Digout 0 - I think).

73,

    ... Joe, W4TV


On 10/10/2010 7:33 PM, Ken Kopp wrote:

> Dave,
>
> If you happen to have the PR6 ... or other ... six meter
> preamp, be aware that it's power is supplied via the
> ACC jack, and a control cable for the THP amp will
> need to provide an additional wire for this.
>
> 73! Ken Kopp - K0PP
>         [hidden email]
>

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[Ken Kopp-3]

Joe is correct ... it's a control line that comes from
the ACC jack.  Power -does- come from the +12V
jack ... or other source, as in my case.

Thanks, Joe.

73! Ken Kopp - K0PP
       [hidden email]

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