Guys - lots of very good info here, but we are beating this into the ground.
Lets end thread thread for now in the interest of maintaining a reasonable list
SNR. ;-)
Go out and operate, experiment with antennas, including the AX1, and see what
has been discussed in this thread is best for you
What makes you think the wire isn't doing the bulk of the radiating just
because it drags across the ground? Actual RF ground is usually some
distance below the surface, sometimes several feet.
There is a way to prove me wrong on all of this. Connect two AX1's to a
Tee connector coming
And I've worked all over the world with 5 or 10 watts doing it :)
Wayne
> On Aug 27, 2019, at 4:07 PM, Wayne Burdick wrote:
>
> I'm generally walking when I use the AX1 (pedestrian mobile, or /PM). It
> isn't possible to elevate the radial under these circumstances; it drags on
> the
I'm generally walking when I use the AX1 (pedestrian mobile, or /PM). It isn't
possible to elevate the radial under these circumstances; it drags on the
ground. The whip is the radiator.
Wayne
N6KR
> On Aug 27, 2019, at 3:05 PM, David Gilbert wrote:
>
>
> I'll try not to beat this into
I'll try not to beat this into the ground here, but I think the physics
here is important.
As K9YC said in his reply to you, equal currents go in both directions
from the feedpoint ... to the AX1 and to the counterpoise wire. That's
simply physics, and it's true unless currents on the
Yes, of course. I know how things work. And I agree with Don’s comment that
came in in another email while I was typing. That does NOT mean the vertical
element is the “counterpoise" to a long elevated wire (or more than one) a few
feet off the ground. Yes those wires may radiate, but
It is easy to cancel the radiation from the 'counterpoise' - use 2 equal
length wires running in opposite directions from the base. The
horizontal radiation from each will cancel, and all you have left is the
loaded vertical radiator to radiate with vertical polarization.
If they are on the
I don’t think I’m missing anything. You’re basically arguing for an elevated
counterpoise. Of course the AX1 needs a counterpoise. And I run an elevated
counterpoise on most of my portable vertical antennas.
My 31’ portable wire works better than an AX1 most of the time. It’s not
always
The point you're missing is that the AX1 wants (needs) a wire
counterpoise to work very well at all, and since it's that counterpoise
wire that is doing most of the actual radiating you're better off trying
to optimize what you do with it. I don't see how that is so difficult
to understand,
Dave's observation is about how the antenna actually works, as
determined by Mother Nature, and, depending how the antenna is rigged,
he's probably right. Antennas work by carrying RF current, any end fed
radiator needs a counterpoise, which, because it's carrying the same RF
current as the
Not trying to start a disagreement here, but I don’t see the point.
If you want to run a wire antenna, then, good gracious, run a wire antenna.
They work pretty well portable. I carry two in my bag. But I fail to see the
rationale of using the AX1 as a “counterpoise”.
For quick low profile
I think you'll find that for a short vertical radiator and a single
counterpoise wire the maximum radiation is in the direction of the wire. EZNEC
confirms this and I've tested it with a friend the length of California on 40 m
where with the counterpoise pointed away from him I could barely
Certainly true, and it's great for that, but a lot of the posts here
have been about people using it for more than that ... like camping and
restrictive locations. I'm just saying those folks could get more out
of it by treating it differently, and it would serve a very useful
purpose in
It’s designed for /PM and stealth ops. In many other situations, of course, a
longer/higher antenna will be more efficient.
73,
Wayne
N6KR
elecraft.com
> On Aug 26, 2019, at 9:26 PM, David Gilbert wrote:
>
>
> I think users of the AX1 would be better off thinking of IT as the
>
I think users of the AX1 would be better off thinking of IT as the
counterpoise, and making the most out of what they normally consider to
be the counterpoise wire.
Look at it this way. Unless you have a lot of current on the shield of
the coax (in which case IT is doing a lot of
I brought along a NanoVNA this trip and used it to array the two counterpoise
attached to my AX1 antenna - adjustments of counterpoise brought SWR down
from 9+ to <2. SNRs in the low ‘teens with a 200mW WSPRlite vs upper 20s -
*inside* a hotel room with sealed windows.
As Wayne said, the AX1 is
Bert ;
elecraft@mailman.qth.net
Subject: Re: [Elecraft] AX1 Loaded Whip Antenna - Elevation and
:-) Buy US. Buy Elecraft. Plain and simple.
72 & 73,
Bill
K9YEQ
FT'er for K2, KX1, KX3, KXPA100, KAT500, W2, etc.
-Original Message-
From: elecraft-boun...@mailman.qth.net On
Behalf
raft@mailman.qth.net
Subject: Re: [Elecraft] AX1 Loaded Whip Antenna - Elevation and
At the factory in California.
Eric
/elecraft.com/
On 8/8/2019 1:53 PM, Bert wrote:
> Where is the original Elecraft AX1 antenna made?
>
> Bert VE3NR
__
At the factory in California.
Eric
/elecraft.com/
On 8/8/2019 1:53 PM, Bert wrote:
Where is the original Elecraft AX1 antenna made?
Bert VE3NR
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help:
]
AX1 Loaded Whip Antenna - Elevation and
https://www.thebalancesmb.com/how-money-laundering-works-on-ebay-414538773,MarkW7MLGOn
Thu, Aug 8, 2019, 2:09 PM David Gilbert wrote:>> It
doesn't seem obvious at all to me that it's a knockoff. There are> only 2
units available and he's askin
https://www.thebalancesmb.com/how-money-laundering-works-on-ebay-4145387
73,
Mark
W7MLG
On Thu, Aug 8, 2019, 2:09 PM David Gilbert wrote:
>
> It doesn't seem obvious at all to me that it's a knockoff. There are
> only 2 units available and he's asking way too high a price for a knockoff.
>
>
It doesn't seem obvious at all to me that it's a knockoff. There are
only 2 units available and he's asking way too high a price for a knockoff.
Dave AB7E
On 8/8/2019 11:05 AM, Raymond Sills via Elecraft wrote:
I suspect that Wayne and Eric would take a big exception to the use
of the
I believe it is made in California - but I don't know about the whip.
Wayne will correct me if I am wrong on that.
73,
Don W3FPR
On 8/8/2019 4:53 PM, Bert wrote:
Where is the original Elecraft AX1 antenna made?
__
Elecraft mailing
-
From: Grant Youngman
To: Bob McGraw K4TAX
Cc: elecraft
Sent: Thu, Aug 8, 2019 10:58 am
Subject: Re: [Elecraft] AX1 Loaded Whip Antenna - Elevation and
Makes you wonder if the Chinese seller is bonkers or just trolling … ??
Grant NQ5T
K3 #2091 KX3 #8342
On Aug 8, 2019, at 10:04 AM, Bob
Well, I actually have three reasons why I think the root of this
discussion has been misguided:
1. Typical portable operation is for casual fun while camping or just
enjoying the outdoors. Squeezing out every last dB doesn't quite fit
that scenario.
2. If you are trying to squeeze out
Loaded Whip Antenna - Elevation and
Makes you wonder if the Chinese seller is bonkers or just trolling … ??
Grant NQ5T
K3 #2091 KX3 #8342
> On Aug 8, 2019, at 10:04 AM, Bob McGraw K4TAX wrote:
>
> Just seen on E-Bay. Wow that's some mark-up!
>
> 73
>
> Bob,
Makes you wonder if the Chinese seller is bonkers or just trolling … ??
Grant NQ5T
K3 #2091 KX3 #8342
> On Aug 8, 2019, at 10:04 AM, Bob McGraw K4TAX wrote:
>
> Just seen on E-Bay. Wow that's some mark-up!
>
> 73
>
> Bob, K4TAX
>
>
>
Just seen on E-Bay. Wow that's some mark-up!
73
Bob, K4TAX
Dave And All,
Hmmm! I don't quite understand that statement. Why would you worry about
every dB at your home station but not necessarily be concerned on a portable
setup??? I guess maybe you are saying that, when operating portable, just
get the best antenna possible as opposed to a lesser
Then you'd be using the T1 to partially drop the SWR on the coax, but it
still wouldn't be anything close to 1:1 unless the T1 has a much broader
range than the tuner in the KX2. You'd still have some additional coax
loss due to SWR (but less loss, of course) and you'd still need the
tuner
The SWR could easily exceed 15:1, depending on the operating frequency (short
loaded whips can be very narrow banded) and other factors that apply to
portable operation such as radial configuration, ground characteristics, and
antenna height.
Even 2 dB matters when you're using QRP.
Wayne
Scroll down to the original post. We were talking about a KX2 with an
internal antenna tuner. Presumably the tuner works as it should to
present the proper load to the finals.
73,
Dave AB7E
On 8/7/2019 5:29 PM, Mark Goldberg wrote:
You need to take into account the radio finals. When
Some points…
“…dragging along a remote tuner”
Surely you are kidding or you get the award for hyperbole of the day. The T1
fits in my shirt pocket! It is zero effort to bring — no “dragging” required.
And, I operate with 50 feet of coax because carrying multiple different lengths
of coax on
Doesn't much matter. You're still talking a 3 dB difference at most (50
feet vs 30 feet), and while I will be the first to argue the benefit of
every single dB for normal station operation (see
http://www.ab7e.com/weak_signal/mdd.html), I don't understand the angxt
over that 3 dB for
Yeah, i didn't catch that he was going to use the internal tuner and just
forgo the external one at the other end of the coax.
In that case, I agree with Dave.
73,
Mark
W7MLG
On Wed, Aug 7, 2019 at 6:19 PM Wes wrote:
> I haven't been following this thread closely but I think Dave makes good
I haven't been following this thread closely but I think Dave makes good
points. As to the final fold-back, if I waded through this correctly, I
understand that the OP has the built-in tuner in his KX2. That solves that issue.
BTW, SWR = 15:1 is a return loss of about 1.1 dB, not 3 dB.
Wes
You need to take into account the radio finals. When the SWR is high, My
KX3 cuts back because it gets too much reflected power. I expect the KX3,
and in fact any other radio or amplifier is similar. 15:1 is about half the
power coming back.
Regards,
Mark
W7MLG
On Wed, Aug 7, 2019 at 5:14 PM
Rather little of this discussion makes sense to me.
Let's look at this realistically:
1. The antenna tuner in the KX2 is rated to be good up to 10:1 SWR.
Let's assume it's good to 15:1.
2. Let's assume you're using a decent cable for portable operation like
RG-8X.
3. Let's assume
Sounds like an idea worth trying — I have always wondered about the coax loss
between my KX3/KX2 and my portable antenna no matter which one it is (i.e.
AX-1, Wire and counterpoise wires, Buddipole, etc.).
But, really glad I did not sell the T1 on several occasions of thinking about
selling
I think a T1 at the base would make a noticeable difference if the coax were
more than a few feet long and the whip's resonance well removed from the target
operating frequency. Short whips can be extremely narrow-banded.
Wayne
> On Aug 7, 2019, at 7:40 AM, Don Wilhelm wrote:
>
> Bret,
>
Bret,
Yes, the T1 mounted at the antenna will reduce the potential loss in the
coax.
Will you notice the difference? Maybe or maybe not.
73,
Don W3FPR
On 8/7/2019 7:54 AM, MaverickNH wrote:
It comes to mind I have an Elecraft T1 ATU I might try attaching directly to
the base of the AX1
It comes to mind I have an Elecraft T1 ATU I might try attaching directly to
the base of the AX1 rather than relying on the KX2 ATU 25-40ft from the
antenna. I try to operate closer but sometimes have to run that RG58 to
clear obstructions. Thoughts?
Bret/N4SRN
--
Sent from:
Me, Too!
73,
Bill
K9YEQ
https://wrj-tech.com/
-Original Message-
From: elecraft-boun...@mailman.qth.net On
Behalf Of J Chester
Sent: Tuesday, August 6, 2019 1:39 AM
To: David Thompson
Cc: elecraft@mailman.qth.net; MaverickNH
Subject: Re: [Elecraft] AX1 Loaded Whip Antenna
Yes, David,
Probably early September
Joe
> On 6 Aug 2019, at 00:03, David Thompson wrote:
>
> Joe…
>
> Will you have reprints available? I would like to see a copy of the article.
>
> Thanks!
>
> David Thompson, AG7TX
> Jack of All Trades
> Master of None
> dbthomp...@me.com
>
>
>
>
>>
Joe…
Will you have reprints available? I would like to see a copy of the article.
Thanks!
David Thompson, AG7TX
Jack of All Trades
Master of None
dbthomp...@me.com
> On Aug 5, 2019, at 02:21, J Chester wrote:
>
> Bret,
>
> I’ve just submitted a review of the AX1 to Practical Wireless
Thank you Joe! I shall look forward to reading your article soon.
Bret/N4SRN
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Help:
Bret,
I’ve just submitted a review of the AX1 to Practical Wireless magazine, which
should appear be in the October issue, published end of September.
I found it worked well on the tripod. The key to getting the most out of it is
to let the counterpoise wire fall to the ground about 3 ft or so
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