No indication which SPE amp. It makes a difference because IIRC the 1K
tuner can't be bypassed. The 2K can. I use the 2K-FA. There's no need to
use the K3 tuner with the 2K as its input SWR is satisfactorily low. 30W
from K3 drives 2K to the legal limit. Off, the 2K tuner is switched out
of the ckt. In that configuration if your coax needs tuner help you'd
have to use the internal K3 tuner, or an external box.
If the external box can handle output of the SPE amp I'd connect it
between amp and antenna. Given a choice I'd want the K3 internal tuner
for convenience if nothing else. It remembers its settings per band so
your task is only to switch it on or off as needed.
FYI the 2K-FA in standby makes little - if any - fan noise. Not much
penalty to have it on whenever the K3 is on. There's a provision for the
2K-FA to receive an "I've just been turned on/off" signal from the K3
that also turns on, and off, the 2K-FA. Don't know about the 1K.
73 Art K6XT~~
Success is going from failure to failure without a loss of enthusiasm.
ARRL, GMCC, CW OPS, SDDXC, NAQCC
ARRL TA
On 2013-12-10 10:00, [email protected] wrote:
Re: [Elecraft] Internal Antenna Tuner and SPE Expert Amplifier.eml
Subject:
Re: [Elecraft] Internal Antenna Tuner and SPE Expert Amplifier Questions
From:
WILLIS COOKE <[email protected]>
Date:
2013-12-09 14:51
To:
"[email protected]" <[email protected]>,
"[email protected]" <[email protected]>
I just finished reading the SPE instruction manual. They say that the input
match of the SPE Expert is good enough that they recommend turning the internal
tuner of the driving transceiver OFF. The recommend that you do not cascade a
tuner such as the Palstar on the output of the SPE. They do not mention a
manual tuner at the antenna, but I would think it to be OK as that is what a
Gamma or T match on a beam would be, as well as other matching devices. I
think that the intent is to use the SPE tuner even if you are running the K3
barefoot but I have not yet completed my installation and put my SPE Expert in
service.
Willis 'Cookie' Cooke
K5EWJ & Trustee N5BPS, USS Cavalla, USS Stewart
________________________________
From:"[email protected]" <[email protected]>
To:[email protected]
Sent: Monday, December 9, 2013 7:19 AM
Subject: [Elecraft] Internal Antenna Tuner and SPE Expert Amplifier Questions
Good Morning,
It's Mark Griffin KB3Z. I was looking at an SPE Expert amplifier and I see it
has an internal antenna tuner which can handle SWR's of up to 4:0. But, I was
wondering if I connected the output of my K3 to the input of the amplifier and
then the antenna to the output of the amplifier, If I used the K3 internal
antenna tuner to decrease the SWR to a reasonable level would this work? I
don't currently have the internal antenna tuner in the K3. It is perhaps a bad
question to ask, but I am currently using a Palstar AT2K as my antenna tuner.
Any help or advice would be greatly appreciated. Mark Griffin, KB3Z
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