Date   

Re: Sound card for use with LP Pan and K3

wb6bee
 

I am using the U5.  I have the U7 and the Beringer on the shelf as back ups.  I tried the beringer and it had harmonic issues, so went back to the U5.   

So far, happy with the U5

Don
WB6BEE


Re: Sound card for use with LP Pan and K3

Jim Brown
 

On 5/18/2021 5:39 PM, Nathan H. Wood wrote:
Are there any of these that stand out or any others that I missed?
If it was me, I'd ask Larry. The Xonars are nice units, although, years ago, I'd heard about reliability issues, I think with the 7.

73, Jim K9YC


Sound card for use with LP Pan and K3

Nathan H. Wood
 

I am using an LP Pan / Win4K3Suite (Win10) as a panadapter for my K3.  I have been using a ASUS Xonar U7 for a number of years.  It's served me well but is now showing signs of critical failures and needs to be retired.  I'm looking for a replacement 128kHz sound card that's reliable and provides a good noise floor.  The recommendations on the telepostinc.com/site haven't been updated since 2018.  Are there any sound cards that stand out as current top runners for this setup?  Personal experience preferred.  Thanks!

In a brief search, I found the following.
Xonar U5
ASUS XONAR SE 5.1
Xonar U7 MKII
BEHRINGER U-Phoria UMC202HD
StarTech.com 7.1 USB
Steinberg UR22

Are there any of these that stand out or any others that I missed?

Nathan, K4NHW


Re: K3 and end fed wire

Mel Farrer, K6KBE
 

Jim, you and I have had this discussion several times, I prefer an antenna that does not need a ground counterpoise and a tuner for most bands, sorry.  END.

Mel, K6KBE

On Tue, May 18, 2021 at 3:34 PM Jim Brown <k9yc@...> wrote:
On 5/18/2021 1:42 PM, K9MA wrote:
> I know they're not popular, but I recommend an external tuner located at
> the end of the wire. The only exception might be if the coax is short
> and the wire is NOT a multiple of a half wave. I

Um, he said he was running a few feet of coax.

I don't see the need for coax unless it is used to insert a common mode
choke, but I DO see the STRONG need for a counterpoise. That can be
anything from radials to one or more wires placed where you can. In
general, more and longer is better. They should be connected to the
radio's chassis.

BTW -- this is antenna fundamentals, has NOTHING to do with the radio,
except that a tuner may be required to match it.

A convenient way to do this is with a BNC to Pomona adapter -- that is,
BNC to a red/black pair of female bananas jacks. Pomona part #1296.
Google "pomona 1296" to see a photo.

73, Jim K9YC







Re: K3 and end fed wire

Jim Brown
 

On 5/18/2021 1:42 PM, K9MA wrote:
I know they're not popular, but I recommend an external tuner located at the end of the wire. The only exception might be if the coax is short and the wire is NOT a multiple of a half wave. I
Um, he said he was running a few feet of coax.

I don't see the need for coax unless it is used to insert a common mode choke, but I DO see the STRONG need for a counterpoise. That can be anything from radials to one or more wires placed where you can. In general, more and longer is better. They should be connected to the radio's chassis.

BTW -- this is antenna fundamentals, has NOTHING to do with the radio, except that a tuner may be required to match it.

A convenient way to do this is with a BNC to Pomona adapter -- that is, BNC to a red/black pair of female bananas jacks. Pomona part #1296. Google "pomona 1296" to see a photo.

73, Jim K9YC


Re: K3 and end fed wire

JOHN MCBRIDE
 

Thanks for the responses. For clarification I can get by with an antenna that will work 10m-40m.  Unfortunately the place I will be setting up the radio and antenna has few trees which limits the options, especially the length of the antenna. Why? The priority for this Field Day site is to be an accessible public location that hopefully many people will visit and be encouraged to become amateur radio operators.

All of the antenna suggestions will be considered, if not for this coming Field Day then later on.

FYI I live in an HOA and my antenna is a vertical wire cut for 20 meters and in a tree, with 16 ground stapled radials. I have a great SWR from 40m to 15m. So, I am confident I can find an antenna that will work for Field Day. And at my QTH I like to use the K3 for PSK31 at 30 Watts.

John N0UQC

--
John N0UQC


Re: K3 and end fed wire

Michael Kopec
 

I know I will probably get a lot of what the heck feedback on this set-up, but it works for me using both my kX3 and K2 with internal tuners, I use a bnc test connector with two test poles connected directly to the radio. I directly connect a 27ft wire, usually strung at a 30 to 45 degree upward angle, to the red pole and a 27ft counterpoise/radial to the other black pole, usually laid on the ground. The xcvr tunes fine on 10 thru 40m with the internal tuner. When I am done operating, I just roll up the #20 stranded wire on a old fishing line spool. It is easy and works for me.

On Tuesday, May 18, 2021, 04:42:51 PM EDT, K9MA <k9ma@...> wrote:


I know they're not popular, but I recommend an external tuner located at the end of the wire. The only exception might be if the coax is short and the wire is NOT a multiple of a half wave. In either case, the counterpoise connects near the end of the antenna.  If you can, the simplest arrangement is to bring the end of the wire right to the tuner near the radio. 

That said, the half wave multiple wire can work very well, if you can match it with an external tuner. (Some use a 9:1 transformer, but I don't.) The big advantage is that only a minimal counterpoise is required, because the antenna impedance is very high. Also, the part of the wire near the feedpoint doesn't radiate much, so bringing the wire right to the radio doesn't hurt performance much.  I have long been using an end fed 40 meter half wave for portable operation on 40, 20, and 15 meters. For 80 meters, I add two 20 meter long radials, bypass the external tuner, and use the internal ATU. On 80, an isolation choke cuts down on RF in the shack, though I don't use it for QRP operation.

73,
Scott K9MA

On 5/18/2021 11:11 AM, JOHN MCBRIDE wrote:
I am considering using my K3 on Field Day with an end fed wire. I have studied the information from Wayne N6KR as well as looked at other information on this topic on line. I am wondering about a transmission line from the ATU (RG8 or other) on the K3 to connect to the end fed wire several feet away. But the recommendation is for the counterpoise to be connected to the ground on the K3. Do I need to run a separate counterpoise wire from the K3 or can the counterpoise be connected to the braid/shield of the transmission line? Any and all responses will be helpful. Thanks!
--
John N0UQC


-- Scott  K9MAk9ma@...


Re: K3 and end fed wire

K9MA
 

I know they're not popular, but I recommend an external tuner located at the end of the wire. The only exception might be if the coax is short and the wire is NOT a multiple of a half wave. In either case, the counterpoise connects near the end of the antenna.  If you can, the simplest arrangement is to bring the end of the wire right to the tuner near the radio. 

That said, the half wave multiple wire can work very well, if you can match it with an external tuner. (Some use a 9:1 transformer, but I don't.) The big advantage is that only a minimal counterpoise is required, because the antenna impedance is very high. Also, the part of the wire near the feedpoint doesn't radiate much, so bringing the wire right to the radio doesn't hurt performance much.  I have long been using an end fed 40 meter half wave for portable operation on 40, 20, and 15 meters. For 80 meters, I add two 20 meter long radials, bypass the external tuner, and use the internal ATU. On 80, an isolation choke cuts down on RF in the shack, though I don't use it for QRP operation.

73,
Scott K9MA

On 5/18/2021 11:11 AM, JOHN MCBRIDE wrote:
I am considering using my K3 on Field Day with an end fed wire. I have studied the information from Wayne N6KR as well as looked at other information on this topic on line. I am wondering about a transmission line from the ATU (RG8 or other) on the K3 to connect to the end fed wire several feet away. But the recommendation is for the counterpoise to be connected to the ground on the K3. Do I need to run a separate counterpoise wire from the K3 or can the counterpoise be connected to the braid/shield of the transmission line? Any and all responses will be helpful. Thanks!
--
John N0UQC


-- 
Scott  K9MA

k9ma@...


Re: K3 and end fed wire

Mel Farrer, K6KBE
 

EVER Heard of the ECOCFD?  
Not my design, but it WORKS.

Mel, K6KBE

On Tue, May 18, 2021 at 11:09 AM Dennis Moore <dennis@...> wrote:
How are you transitioning from the coax to the end fed?

If the antenna is connected directly to the jack on the K3 then the
counterpoise would be necessity be connected to the chassis at some
point. But if you're running a length of coax out to the antenna and
using some sort of unun, connect the counterpoise at that unun and use
some type of choke on the coax to keep RF off the shield.

When I'm using an end-fed antenna placed away from the rig, I use the HF
matchbox found here: http://www.earchi.org/proj_homebrew.html connected
directly to an ugly balun. With this setup I've worked as far as
Thailand, Spain, Fiji, New Zealand from California. Easily handles 100
watts.

73, Dennis NJ6G

On 5/18/2021 09:11, JOHN MCBRIDE wrote:
> I am considering using my K3 on Field Day with an end fed wire. I have
> studied the information from Wayne N6KR as well as looked at other
> information on this topic on line. I am wondering about a transmission
> line from the ATU (RG8 or other) on the K3 to connect to the end fed
> wire several feet away. But the recommendation is for the counterpoise
> to be connected to the ground on the K3. Do I need to run a separate
> counterpoise wire from the K3 or can the counterpoise be connected to
> the braid/shield of the transmission line? Any and all responses will
> be helpful. Thanks!
> --
> John N0UQC






Re: K3 and end fed wire

Dennis Moore
 

How are you transitioning from the coax to the end fed?

If the antenna is connected directly to the jack on the K3 then the counterpoise would be necessity be connected to the chassis at some point. But if you're running a length of coax out to the antenna and using some sort of unun, connect the counterpoise at that unun and use some type of choke on the coax to keep RF off the shield.

When I'm using an end-fed antenna placed away from the rig, I use the HF matchbox found here: http://www.earchi.org/proj_homebrew.html connected directly to an ugly balun. With this setup I've worked as far as Thailand, Spain, Fiji, New Zealand from California. Easily handles 100 watts.

73, Dennis NJ6G

On 5/18/2021 09:11, JOHN MCBRIDE wrote:
I am considering using my K3 on Field Day with an end fed wire. I have studied the information from Wayne N6KR as well as looked at other information on this topic on line. I am wondering about a transmission line from the ATU (RG8 or other) on the K3 to connect to the end fed wire several feet away. But the recommendation is for the counterpoise to be connected to the ground on the K3. Do I need to run a separate counterpoise wire from the K3 or can the counterpoise be connected to the braid/shield of the transmission line? Any and all responses will be helpful. Thanks!
--
John N0UQC


Re: K3 and end fed wire

Mel Farrer, K6KBE
 

John what bands are you wanting to operate?

My favorite end fed wire is the ECOCFD  End connected Off center fed dipole.  I have the construction article if you are interested.  Cheers,

Mel, K6KBE

On Tue, May 18, 2021 at 10:46 AM JOHN MCBRIDE <jlm124@...> wrote:
I am considering using my K3 on Field Day with an end fed wire. I have studied the information from Wayne N6KR as well as looked at other information on this topic on line. I am wondering about a transmission line from the ATU (RG8 or other) on the K3 to connect to the end fed wire several feet away. But the recommendation is for the counterpoise to be connected to the ground on the K3. Do I need to run a separate counterpoise wire from the K3 or can the counterpoise be connected to the braid/shield of the transmission line? Any and all responses will be helpful. Thanks!
--
John N0UQC


Re: K3 and end fed wire

Mike Flowers
 

This article describes an antenna for use with the KX2/KX3, but of course would work with a K3:

 

https://reflector.sota.org.uk/t/simple-resonant-multiband-antenna-for-use-with-kx3-2-and-internal-atu/16978

 

- 73 and good DX de Mike, K6MKF, NCDXC Secretary

 

From: Elecraft-K3@groups.io <Elecraft-K3@groups.io> On Behalf Of JOHN MCBRIDE
Sent: Tuesday, May 18, 2021 09:11
To: Elecraft-K3@groups.io
Subject: [Elecraft-K3] K3 and end fed wire

 

I am considering using my K3 on Field Day with an end fed wire. I have studied the information from Wayne N6KR as well as looked at other information on this topic on line. I am wondering about a transmission line from the ATU (RG8 or other) on the K3 to connect to the end fed wire several feet away. But the recommendation is for the counterpoise to be connected to the ground on the K3. Do I need to run a separate counterpoise wire from the K3 or can the counterpoise be connected to the braid/shield of the transmission line? Any and all responses will be helpful. Thanks!
--
John N0UQC


K3 and end fed wire

JOHN MCBRIDE
 

I am considering using my K3 on Field Day with an end fed wire. I have studied the information from Wayne N6KR as well as looked at other information on this topic on line. I am wondering about a transmission line from the ATU (RG8 or other) on the K3 to connect to the end fed wire several feet away. But the recommendation is for the counterpoise to be connected to the ground on the K3. Do I need to run a separate counterpoise wire from the K3 or can the counterpoise be connected to the braid/shield of the transmission line? Any and all responses will be helpful. Thanks!
--
John N0UQC


Re: Trade: KX1, with extras, for W2 Wattmeter with extras

Dave (NK7Z)
 

The KX1 is no longer available, a person has exactly what I was looking for, and we are in the process of performing the trade.

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources

On 5/16/21 12:52 PM, Dave (NK7Z) wrote:
Hi,
I have an almost mint KX1, (recently back from service and checkup, with paperwork indicating all is well with the unit, and it meeting specs), which I am looking to trade for a almost mint condition W2 Wattmeter, with one HF 2K coupler, (DCHF-2000), and one VHF 200 W coupler, (DCV/U-200).
I will pay insured express postage to you, and you pay insured express postage to me.
Rather than attach a set of photos to the list, if you are interested, see:
https://wp.me/P285zq-2id
For photos and more detailed description.


KIO3B and KXV3B Needed

Bruce N9BX <n9bx73@...>
 

Hello group.  If anyone has one or both of these for sale, please let me know.  Just upgrading my basic K3
Bruce N9BX 73  You can Email me direct.  Thanks.


Re: Lets see if we can meet on 3.775 75/80 Elecraft Net

Paul Van Dyke
 

Lets see who can brave the mess on the bands tonight
It has been a mess all day ... I know there were ops on 40, bur never heard them

Since Mother Nature messed with me last week and I could only pull one of all the crashes. Let's try again 
Time Tonight at 01:00 UTC (or Monday morning)
3.775 73

Paul Van Dyke - KB9AVO
K4 #76


On Sun, May 9, 2021 at 4:02 AM Paul Van Dyke <pvandyke1953@...> wrote:
Since Mother Nature messed with me last week and I could only pull one of all the crashes. Let's try again 

Time Tonight at 01:00 UTC (or Monday morning)
73

Paul Van Dyke - KB9AVO
K4 #76


Trade: KX1, with extras, for W2 Wattmeter with extras

Dave (NK7Z)
 

Hi,

I have an almost mint KX1, (recently back from service and checkup, with paperwork indicating all is well with the unit, and it meeting specs), which I am looking to trade for a almost mint condition W2 Wattmeter, with one HF 2K coupler, (DCHF-2000), and one VHF 200 W coupler, (DCV/U-200).

I will pay insured express postage to you, and you pay insured express postage to me.

Rather than attach a set of photos to the list, if you are interested, see:

https://wp.me/P285zq-2id

For photos and more detailed description.

--
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources


Re: K3 to K3S Upgrade Parts Question

Bob Hammond G4DBW
 

I assumed June 2022........

Bob G4DBW


Re: K3 to K3S Upgrade Parts Question

Ian Kahn
 

All,

Two comments to this:

  1. To Jim, K9YC - Please accept my apologies for what, in hindsight, was an inappropriate response to your reply to my original post. I saw your reply late in the evening, after a rough day at work. Perhaps I was bit more prickly than I needed to be, and I took your reply to be more than it really was. This, of course, is no excuse for behaving poorly. For that, I apologize, both to you personally, and to the entire community.
  2. To the others who replied - thank you for the answer. I couldn't find the original email from Elecraft, and I obviously mis-remembered what it said about anticipated delivery dates.
I will now go crawl back in my hole and patiently await my components sometime in/after July of this year.

73 de,

Ian, NV4C


Re: K3 to K3S Upgrade Parts Question

David M
 

You probably shouldn't expect your order to be delivered by Field Day...

From Elecraft's web site:

https://elecraft.com/pages/k3-k3s-options

"We hope to start shipping end of July at the earliest."

Good luck,   de AJ4TF

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