If you use the key-line interrupter, then you must use the phono-plug cables to
connect the K3, KPA and KAT. Otherwise PTT will not get to the amplifier.
Of course using both without the key line interrupter is very redundant. You
just don’t want to use both if an external device is included.
SteppIR will accept up to 200 W without damage and opening the amplifier key
line is the standard way protect SteppIR antennas.
It has been asserted that "NO key line interrupter is needed". However,
Elecraft recognizes that they may be such a need and sells an adapter to
disable keying by
Key line interrupt would probably not be a good way since the transceiver is
still transmitting, but at a lower level. All key line interrupt does is to
disable the amplifier.
I would think a better way would be to use the K3’s inhibit input signal if you
really need no tx power coming out.
"In the KAT500 manual, page 5, Figure 1 Cabling Diagram, is the better and
safer way to configure the system. NO key line interrupter is needed.
How does an Elecraft station that controls KPA500 and KAT500 using AUX cables
inhibit keying when a SteppIR antenna is moving the tapes? This
From: Andy Durbin
To: "elecraft@mailman.qth.net"
Subject: [Elecraft] KPA500 / KAT500 and W2
watt meter question Message-ID:
Content-Type: text/plain; charset="iso-8859-1" "I just ordered the
KPA500/KAT500 combo and W2 watt meter for my K3S. Should I use the key
line
"I just ordered the KPA500/KAT500 combo and W2 watt meter for my K3S. Should I
use the key line interrupt connected to the W2 watt meter or should I connect
the key line interrupt to the KAT500? Do I even need to use key line interrupt
with the K line set up?"
Why would it hurt to have
The KAT500 will interrupt the amp properly. Radio key line goes to KAT,
then KAT key line goes to KPA. Coax is opposite: Rig to Amp, then Amp
to Tuner, then Tuner to Antenna.
On 10/10/23 08:17, Glenn Maclean wrote:
I just ordered the KPA500/KAT500 combo and W2 watt meter for my K3S. Should
Glenn;
You will want the two Aux cables to connect the K3S to the KAT500, then the
KAT500 to the KPA500. The cables are described in the equipment manuals.
When the KAT500 is in a tune or finds some error situation, it will negate the
key line to the KPA500 until the KAT is able to correct the
The original post is in the archives so I am sure that was distributed:
https://mailman.qth.net/pipermail/elecraft/2023-October/293543.html
John KK9A
Dean, K2WW wrote;
I don't see the original thread only Bob's reply?
I've noticed these broken thread quite frequently...Has anyone else see
this?
;
>
> On 10/10/2023 7:18 AM, elecraft-requ...@mailman.qth.net wrote:
> > Message: 23 Date: Tue, 10 Oct 2023 05:17:26 -0700 From: Glenn Maclean
> > To: elecraft@mailman.qth.net Subject: [Elecraft]
> > KPA500 / KAT500 and W2 watt meter question Message-ID:
> > <3a0e28e4-84
menu PWR SET to Per Band.
73
Bob, K4TAX
On 10/10/2023 7:18 AM, elecraft-requ...@mailman.qth.net wrote:
Message: 23 Date: Tue, 10 Oct 2023 05:17:26 -0700 From: Glenn Maclean
To: elecraft@mailman.qth.net Subject: [Elecraft]
KPA500 / KAT500 and W2 watt meter question Message-ID:
<3a0e28e4-8
I just ordered the KPA500/KAT500 combo and W2 watt meter for my K3S. Should I
use the key line interrupt connected to the W2 watt meter or should I connect
the key line interrupt to the KAT500? Do I even need to use key line interrupt
with the K line set up?
Thanks in advance
Glenn WA7SPY
Sent
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