t;> Enter the "antenna tuner" that converts what the antenna shows to the 50
>> ohms needed by the output filter. The built in SWR meter displays the SWR on
>> the link between the tuner and the output filter.
>>
>> Ron AC7AC
>>
>> -Original Messag
n.qth.net] On Behalf Of Tom Azlin N4ZPT
> Sent: Monday, January 02, 2012 6:19 PM
> To: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] K3 Internal Tuner Question
>
> Thanks Matthew. I should not have spoken like that. Should just
> have said the meter in the line would not ch
Hi Tom,
Ok, one more swing at it.
The "tuner" as Don states (and we agree), is transforming the 50 Ohm
impedance of the transmitter, into something that mates better with the
impedance of the antenna for (hopefully*) better transfer of energy to/from
the antenna. There are similar circuits insid
the link between the tuner and the output filter.
Ron AC7AC
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Tom Azlin N4ZPT
Sent: Monday, January 02, 2012 6:19 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 I
Thanks Matthew. I should not have spoken like that. Should just
have said the meter in the line would not change just because a radio
tuner transformed impedance to make the radio happy. 73, tom n4zpt
On 1/2/2012 9:11 PM, Matthew Pitts wrote:
> Tom,
>
> All an antenna tuner does is show the radio
Tom,
All an antenna tuner does is show the radio the load it expects; the SWR will
still be high at the output of the tuner, and an SWR meter in the coax at that
output will show it as it actually is at that point, not as it is on the input
of the tuner/output of the radio.
Matthew Pitts
N8OHU
Not sure I understand this.
I did not think an SWR meter was supposed to work properly only when
seeing 50 ohms restive.
If the line is not flat it is terminated in to something other than the
feedline impedance, i.e. not 50 ohms restive in this discussion. I would
expect the SWR meter at some
Rick,
Not quite --
Both SWR meters can be quite accurate - they are just not measuring the
same thing.
Imagine an external tuner - put an SWR meter on the input, and another
on the output -
Now make changes to the L and C in the tuner - note that the SWR meter
on the input is the only one that
Let me see if I can correctly state, with clarity for all to understand so
this thread can die peacefully and we can move on (please?).
The K3 puts out power into an internal tuner (if installed) and then to an
SO-239 at the rear of the radio. If the tuner is in bypass, the impedance
is very clos
iejko [mailto:dziedziej...@bellsouth.net]
Sent: Sunday, January 01, 2012 8:37 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] K3 Internal Tuner Question
Thanks for the responses, will take the Palstar out and hook the antenna
directly to the K3 and go by the K3's swr meter and po
I also have a meter between my K3 and my antenna. The AWESOME tuner in the K3
keeps the radio happy, while the external meter will show, at a glance if there
has been any significant change in the antenna itself.
Dave - K9FN
Sent from my Samsung smartphone on AT&T
GW0ETF wrote:
>John,
>
>No
Quite right Joe, since, as I said, the KAT3 is providing a low SWR between
the KAT3 and PA *inside* the K3.
Now for another cup of coffee...
Ron AC7AC
-Original Message-
> You didn't say how much coax ran from the K3 to the Palstar. For an
> accurate comparison it should be zero (use
John,
No harm to leave the external meter in line, just don't use it's readings..
I have a Palstar ATU in line for when I use my amp with my multi-band
doublet. When the amp is not switched in I'll often bypass the ATU and use
the KAT3. The swr meter in the Palstar atu is still in-line however an
ters precision instruments; they don't need to be for efficient
> transmission line operation at H.F.
>
> Ron AC7AC
>
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of John Dziedziejko
> Sent: 02
truments; they don't need to be for efficient
transmission line operation at H.F.
Ron AC7AC
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of John Dziedziejko
Sent: 02 January 2012 04:13
To: elecraft@mailman.qth.net
Subjec
tenna
impedance.
Regards
John G4ZTR
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of John Dziedziejko
Sent: 02 January 2012 04:13
To: elecraft@mailman.qth.net
Subject: [Elecraft] K3 Internal Tuner Question
I installed the KAT3 ove
John, I'm not being flippant. Please pick up a copy of Reflections III
by Walt Maxwell W2DU, published by CQ Comuunications. The book covers a
lot of ground and will deepen your understanding of what you are rightly
seeing.
73, de Nate N0NB >>
--
"The optimist proclaims that we live in the be
Thanks for the responses, will take the Palstar out and hook the antenna
directly to the K3 and go by the K3's swr meter and power output
indications.
Best regards,
John W9QP
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Home: http://mailman.qth.net/mailma
The SWR displayed on the K3 is after the PA, but before the ATU. The external
meter shows the SWR at the antenna, after the ATU.
Dick, K6KR
On Jan 1, 2012, at 20:12, "John Dziedziejko" wrote:
> I installed the KAT3 over the weekend and the construction and calibration
> was successful. This e
I installed the KAT3 over the weekend and the construction and calibration
was successful. This evening I hooked everything back up to check reception,
tuning and swr. I have it set to AUTO, when I tap the ATU TUNE switch the
tuner does its thing and I read a 1.0:1 swr on the K3 meter. I have a
Pal
Hello all,
The internal tuner on my K3 works great. It's much better than I expected.
However I've noticed something unexpected, so I'll ask the list(s).
I've cleared the tuner memories (K3_EZ) and have gone to often used
frequencies (local 75 meter nets for example) activated the tuner, w
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