For those with antennas that are "nearly right," eg provide <1.5:1 in a sweet
spot but not the entire band, like a beam or a dipole, a commercial matcher
that covers a huge range is not justified. A simple multi-tapped transformer
would satisfy those needs. A relay-switched unit should be
Please don’t talk down to me or many other of us. I’ve been in this hobby for
over 60 years and I know how things worked both then and now.
To answer your question about broadcast, many systems consist of series fed
towers. In a practical world a tower presenting zero reactance is about 35
Hi,
I know nothing about BC transmitters and antennas but in our world of
amateur radio solid state transmitters it is imperative that the
transmission line presents a load close to 50 ohms resistive to the
transmitter. The transmitter doesn't care how this is accomplished as long
as it sees a
] On Behalf Of David Gilbert
Sent: Sunday, April 19, 2020 1:17 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KATxxx Remote Tuner
Why? Specifically (numbers please), what would it gain you that would
be cost effective versus other alternatives?
73,
Dave AB7E
On 4/19/2020 8:52 AM
you get what you pay for.
Sent from my iPad
> On Apr 19, 2020, at 5:58 PM, Grant Youngman wrote:
>
> At a “mere” $3K each, the AT-615B might be a great product, but is hardly
> what I would call a universally accessible solution …
>
> Grant NQ5T
>
>> On Apr 19, 2020, at 5:13 PM, W2xj
At a “mere” $3K each, the AT-615B might be a great product, but is hardly what
I would call a universally accessible solution …
Grant NQ5T
> On Apr 19, 2020, at 5:13 PM, W2xj wrote:
>
> You can get an AT-615B from Array Solutions now and do this. I put 10 in a
> club station for our various
I agree. Match the antenna, whatever the Z may be, to the feed line. This is
most efficiently done at the antenna feed-point.
However with good loss coax on HF, matching at the transmitter end is easier
and less complex and less expensive.
Bob, K4TAX
Sent from my iPhone
> On Apr 19,
You can get an AT-615B from Array Solutions now and do this. I put 10 in a club
station for our various wire arrays. They do everything you need.
BTW I disagree about this 50 Ohm antenna thing. In my world of commercial high
powered broadcasting 30 MHz and under, there are almost never
Why? Specifically (numbers please), what would it gain you that would
be cost effective versus other alternatives?
73,
Dave AB7E
On 4/19/2020 8:52 AM, Lyn Norstad wrote:
That being said, a “remote” version of the KAT500 (or a KAT1500) would be of
immense interest to me – so I will
I don't think that's actually true in most cases. For example, a load
of 35 - j45 gives a 3:1 SWR at the load for 50 ohm coax, and the
additional line loss at 14 MHz due to SWR over 200 feet of LMR-400
(moderate cost) is about 0.5 dB.
In most cases with typical antennas and decent
On 4/19/2020 8:51 AM, ab2tc wrote:
I totally agree with your last statement about the tuner placement.
The importance of a tuner being at the feedpoint depends entirely on the
antenna, the frequency(ies), and the feedline. The lower the operating
frequency, and lower the feedline loss
craft-boun...@mailman.qth.net] On Behalf Of Richard Thorne
Sent: Sunday, April 19, 2020 7:40 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] KATxxx Remote Tuner
Eric/Wayne,
Has there been any work done for a potential dedicated remote antenna tuner?
A remote tuner that could handle 500 or
Hi Rich,
I totally agree with your last statement about the tuner placement.
I can't answer for Eric and Wayne and I am sure they will chime in in due
time. I haven't heard of any plans to introduce a weatherproofed version of
any of their tuners.
But the KAT500 is very easy to remote control
Eric/Wayne,
Has there been any work done for a potential dedicated remote antenna tuner?
A remote tuner that could handle 500 or 1500 watts to match up with amps power
wise (Or just a barefoot K3/K4). Maybe a black box between the LAN on the K4 or
ACC on the K3 so control signals could be
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