I’d like to see a large, heavy desk-top Elecraft transceiver, not to replace the K3 evolutions at all, but instead to sit by itself complete with internal everything -- panadapter, internal power supply, 300 or more watts output, a hefty 10:1 antenna tuner, and more. With a large cabinet, the ‘and more’ could encompass so much of what we’ve read here on the other Christmas wish lists. Also, have the 6-Meter preamp built-in; put one speaker on the left & another on the right of the front panel for stereo; more frequency memories; double the number of message banks; four SO-239 antenna jacks; and some spreading of the main control knobs. I’ll stop there. Like the K3, it’d knock the socks off the other manufacturers.

And, of course, would cost more than 0.5 % of hams could afford, as well as
offering little or nothing in performance than can presently be had with the
Elecraft K3 System by perhaps 5% or more of the ham population. I would not
invest in that business plan.



Jerry AI6l



_____

From: Elecraft_K3@... [mailto:Elecraft_K3@...] On
Behalf Of w2or@...
Sent: Monday, January 06, 2014 7:35 PM
To: Elecraft_K3@...
Subject: Re: [Elecraft_K3] Re: What would you like to see on your K4 next
Christmas





I'd like to see a large, heavy desk-top Elecraft transceiver, not to replace
the K3 evolutions at all, but instead to sit by itself complete with
internal everything -- panadapter, internal power supply, 300 or more watts
output, a hefty 10:1 antenna tuner, and more. With a large cabinet, the
'and more' could encompass so much of what we've read here on the other
Christmas wish lists. Also, have the 6-Meter preamp built-in; put one
speaker on the left & another on the right of the front panel for stereo;
more frequency memories; double the number of message banks; four SO-239
antenna jacks; and some spreading of the main control knobs. I'll stop
there. Like the K3, it'd knock the socks off the other manufacturers.

I have been configuring HRD with my KX3 and wondering if anyone else has
done so?

I can get HRD to copy and send PSK31 and RTTY with the KX3 in Data A
(rev) mode. Although I can copy CW, HRD will not key the KX3 for CW

I have tried multiple setting in the KX3 and HRD.

Has anyone been able to get CW to work with HRD?

Thanks,
--
Irwin KD3TB

----- Original Message -----

From: Mel Farrer

To: Elecraft_K3@...

Sent: Sunday, January 05, 2014 2:29 PM

Subject: Re: [Elecraft_K3] RE: BL2 on ocf dipole

 

Hi David, 

I think you will find a good run at the operation of baluns at W8JI site.  Just Google it.

Mel, K6KBE

On Saturday, January 4, 2014 11:19 PM, David Cutter <d.cutter@...> wrote:

 



Hello Mel, thanks for your contribution.  Where it's going is off track : - /  but it's interesting to hear what folks are doing. 

 

I wanted a little theory on the use of the BL2 followed by a choke eg W1JR type. 

73

David

G3UNA

 

 

----- Original Message -----

From: Mel Farrer

To: Elecraft_K3@...

Sent: Saturday, January 04, 2014 11:11 PM

Subject: Re: [Elecraft_K3] RE: BL2 on ocf dipole

 

Not sure where this thread is going, but I use a standard homebrew 4:1 ferrite balun then a W1JR choke balun with type 31 core and RG303 on my OCF with no RFI problems. Very light and easy to pack.  Home brew forever.

Mel, K6KBE

On Saturday, January 4, 2014 3:05 PM, Everett Sharp <everettsharp@...> wrote:

 

For what it is worth, I have used the Radio Works Caroline Windom and had problems with it and it is very poorly made. You do not need the balun that Radio Works has on their Windom, which is 20' from the the 4:1 balun that is at the apex. However, adding a common mode choke in the feed line somewhere between the antenna and your rig will help with the noise and any RF on the outside of the coax. 

Everett N8CNP

On Jan 4, 2014, at 2:43 PM, <oleraven@...> wrote:

 

bl2 on ocf dipole
hi
go to radio works web site and read about the caroline windom.
it will explain the setup and the balun and choke to use.

73 john
wb2jfn

http://www.radioworks.com/

---

This email is free from viruses and malware because avast! Antivirus protection is active.

---

This email is free from viruses and malware because avast! Antivirus protection is active.

----- Original Message -----

From: Mel Farrer

To: Elecraft_K3@...

Sent: Saturday, January 04, 2014 11:11 PM

Subject: Re: [Elecraft_K3] RE: BL2 on ocf dipole

 

Not sure where this thread is going, but I use a standard homebrew 4:1 ferrite balun then a W1JR choke balun with type 31 core and RG303 on my OCF with no RFI problems. Very light and easy to pack.  Home brew forever.

Mel, K6KBE

On Saturday, January 4, 2014 3:05 PM, Everett Sharp <everettsharp@...> wrote:

 

For what it is worth, I have used the Radio Works Caroline Windom and had problems with it and it is very poorly made. You do not need the balun that Radio Works has on their Windom, which is 20' from the the 4:1 balun that is at the apex. However, adding a common mode choke in the feed line somewhere between the antenna and your rig will help with the noise and any RF on the outside of the coax. 

Everett N8CNP

On Jan 4, 2014, at 2:43 PM, <oleraven@...> wrote:

 

bl2 on ocf dipole
hi
go to radio works web site and read about the caroline windom.
it will explain the setup and the balun and choke to use.

73 john
wb2jfn

http://www.radioworks.com/

---

This email is free from viruses and malware because avast! Antivirus protection is active.

 

I'm getting audio, but not receiving any signals on my sub-receiver after enabling the KRX3 module and uploading my factory config.  

I think I'm missing a simple setting it's escaping me.  

KRX3 is set to: ANT=ATU

Can someone please point me in the right direction?

Thank you

Cary, VE4EA

----- Original Message -----

From: everettsharp@...

To: Elecraft_K3@...

Sent: Saturday, January 04, 2014 3:15 PM

Subject: Re: [Elecraft_K3] BL2 on ocf dipole

 

Hi David,

 

I have been using a OCF "Windom" that is for 80 through 6 meters. I does use a 4:1 balun  at the apex and is at about 35' above the ground. It is a commercially made OCF from W8AMZ http://w8amz.com/W8AMZ_OCF___WINDOM.html. I have no problem tuning it on any band, 80 through 6 meters, using the K3 with this antenna. Also there are no RFI issues that I know of with this set up.

 

I did ground the coax shield, just before it entered my house, which is about 45' from the apex. Then about 20' from that, I added a common mode choke. The common mode choke greatly reduced noise on receive on both 80 and 40 meters. The common mode choke is made up using (4) FT240-31 stacked toroids, with 8 turns of RG8X through the toroids. 

 

My only issue with most commercially made OCF antennas is that use ferrite rods for their baluns. I have checked several of the 4:1 baluns, using ferrite rods, using my MFJ 259 and a 200 ohm resistor across the antenna side of the balun and I see the SWR all over the place as I sweep frequencies from 1.8  to 55 MHz. I have made up some baluns using (2) FT140-61 toroids, with each wound with 8 bifilar windings, then they are connected is series on the antenna side and in parallel on the 50 ohm side. With this setup, when I sweep it, I never see the SWR above 1.2:1.

 

So that is  what I know, I hope it will be of some help.

 

Everett N8CNP

 

In a message dated 1/4/2014 6:52:28 A.M. Central Standard Time, d.cutter@... writes:

 



Thanks for the quick response, Mike. 

 

All the ocf dipoles I've seen use 4:1 because the feed point Z is near 200ohm for multi-band operation.  I should say that I will be using the K3 internal matching unit to optimise the system. 

 

Yes, eliminating the vertical radiation could be a disadvantage but I will have reduced pickup from nearby noise sources which is more important for me at home.  In a quiet location such as field day there are different criteria.

 

David

G3UNA

 

 

----- Original Message -----

From: mikerodgerske5gbc@...

To: Elecraft_K3@...

Sent: Saturday, January 04, 2014 12:27 PM

Subject: Re: [Elecraft_K3] BL2 on ocf dipole

 

A 4:1 Balun will be a mismatch, at least at common element lengths. 

Putting the choke right after the balun will eliminate the vertical radiating part of the design. Both vertical and horizontal radiation is probably why these antennas seem to work well. 

But hey, experiment away. 

73

Mike R

Bluegrass white snow

      - Patty Loveless

On Jan 4, 2014, at 5:31 AM, <d.cutter@...> wrote:

 

The off-centre-fed dipole is obviously not balanced and I want to feed an experimental ocf dipole with coax, again, unbalanced.  For experimental purposes I wondered if the Elecraft BL2 in 4:1 position (because I have one) could be used at the aerial if I immediately follow it with a *good* coax choke.  My idea is that by preventing common mode current right at source, it would allow proper transformer action in the BL2 *with low loss,* because common mode current is not passing through the cores to increase excitation.

Your comments would be appreciated.

David
G3UNA

---

This email is free from viruses and malware because avast! Antivirus protection is active.

---

This email is free from viruses and malware because avast! Antivirus protection is active.

----- Original Message -----

From: oleraven@...

To: Elecraft_K3@...

Sent: Saturday, January 04, 2014 8:43 PM

Subject: [Elecraft_K3] RE: BL2 on ocf dipole

 

bl2 on ocf dipole
hi
go to radio works web site and read about the caroline windom.
it will explain the setup and the balun and choke to use.

73 john
wb2jfn

http://www.radioworks.com/

---

This email is free from viruses and malware because avast! Antivirus protection is active.

 

bl2 on ocf dipole
hi
go to radio works web site and read about the caroline windom.
it will explain the setup and the balun and choke to use.

73 john
wb2jfn

http://www.radioworks.com/