You are using the matchbox to convert the balanced line to unbalanced
and then using the internal ATU to resolve a match.
Use the matchbox connected direct to your radio, bypass the internal
ATU, and tune the matchbox as needed. That will work great.
If you insist on using the radio internal
Good Evening,
The sun tossed a mix of fast a slow streams of solar wind at us.
That should upset our ionosphere in many ways. I doubt the bands will
be as quiet as they were last week. I expect a wide variety of QSB
types with a similar mix of noises.
Take note of the time "change".
I am going to be putting up a SteppIR BigIR vertical soon.
They send me a cable for Elecraft connection in order to deliver the
frequency to the control box.
My question is exactly where to connect the SteppIR control box to the
radio.
My station:
K3 with the upgraded I/O board KI03B and also the
GM Bill and many thanks for your two emails.
First, yes the sub-RX also exhibits the same loss of
signal.
Looking back at my 2025 log (I am QRV every day) for 17m,
the problem appears to have started at the end of January
and was perhaps more sudden than what I first thought. Up
until then
Ted,
If you upgrade to a K4 instead of a K3, the connection is easy, just
dedicate the K4's independent RS-232 jack to the SteppIR cable.
But this SteppIR cable WILL NOT WORK with the K3S/P3 without a very
specific splitter connection, unless you're willing to give up all computer
control of your
Hi Bob,
Thanks for your comment. As I noted in our private email exchange, the Johnson
Matchbox was a last-minute substitution for an Elecraft BL-2 balun that was
overheating on some bands at 100 watts. I had not been using that
configuration previously, but faced with the choice of going QRP
Been there, done that Mike😉 Led to my rule with baluns/transformers:
If it gets hot, get a bigger toroid. Lacking a larger toroid, you can
rewind it using two stacked cores, but one bigger one is better. A
problem with my experiment at the radio-->int tuner-->ext tuner was that
the ext tune
Hi Fred,
I did just as you did - first got lowest SWR settings on the Matchbox using my
AA-55 impedance analyzer, recorded those settings on each band of interest in
the middle of the CW or phone sub-bands, and then used the internal ATU to
compensate for higher SWR away from the fixed tune poi
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