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Forum: Antenna July 11th 20, 06:51 PM
Replies: 31
Views: 704
where does the power when using an antenna-tuner go to ?

On Fri, 10 Jul 2020 23:27:37 +0200, kristoff
wrote:

Where does this "lost" energy go to?

Mostly into heating the tuner inductors. The Q of the inductors is
the major...
Forum: Antenna July 6th 20, 07:41 PM
Replies: 5
Views: 126
antenna around Plastic

On 6 Jul 2020 17:50:43 GMT, Allodoxaphobia
wrote:

On Sun, 05 Jul 2020 10:18:00 -0700, Jeff Liebermann wrote:

Take a small sample of the tinted plastic and put it in...
Forum: Antenna July 5th 20, 06:18 PM
Replies: 5
Views: 126
antenna around Plastic

On Sun, 5 Jul 2020 02:06:54 -0700 (PDT), Tony James
wrote:

Can I surround the antenna with tinted plastic

I try to ignore one-line questions. They usually don't...
Forum: Antenna August 23rd 19, 03:41 PM
Replies: 2
Views: 155
Dynamic Tuning VLF antenna tuner

On Fri, 23 Aug 2019 14:11:25 +0000 (UTC), David Lesher
wrote:

Ran across this:

https://www.doncio.navy.mil/chips/ArticleDetails.aspx?ID=12681

"Dynamic tuning works by...
Forum: Antenna February 1st 19, 02:49 PM
Replies: 0
Views: 166
"Magnetic Loop" Redux

On Thu, 31 Jan 2019 14:39:28 EST, "J.B. Wood"
wrote:

Hello, all, and in addition to my recent posting on how the subject term
came into usage (primarily by hams) there is...
Forum: Antenna January 29th 19, 11:47 PM
Replies: 5
Views: 234
[QRZ] Help me understand magloop vs. G5rv jr. noise difference (pt. II)

On Tue, 29 Jan 2019 13:20:40 EST, "J.B. Wood"
wrote:

On 1/29/19 5:38 AM, QRZ.com via rec.radio.amateur.moderated Admin wrote:

Hello, and I just can seem to find anything...
Forum: Antenna January 20th 19, 05:36 PM
Replies: 4
Views: 308
How to tune an EH Antenna

On Sat, 19 Jan 2019 14:38:35 -0800 (PST), John Booth
wrote:
I am trying to build a 40 meter EH Antenna. I've been following the directions in the pdf bood written by Ted...
Forum: Antenna November 7th 18, 06:39 PM
Replies: 2
Views: 1,212
MFJ-259B touchup paint?

On Tue, 6 Nov 2018 22:48:42 +0000, wicklowham
wrote:

On 06/11/2018 07:29, Jeff Liebermann wrote:
Incidentally, the owner of the MJF-259B has graciously allowed me...
Forum: Antenna November 6th 18, 08:29 AM
Replies: 2
Views: 1,212
MFJ-259B touchup paint?

Does anyone know the paint color code (pantone?) or the name for the
paint used on the MJF-259B? No, I haven't called or written MFJ yet
because I'm lazy.

I'm rebuilding yet another antenna...
Forum: Antenna October 19th 18, 07:15 AM
Replies: 143
Views: 5,862
4NEC2?

On Thu, 18 Oct 2018 20:12:55 +0100, (Roger Hayter)
wrote:

Jeff Liebermann wrote:

On Thu, 18 Oct 2018 19:22:02 +0100, (Roger Hayter)
...
Forum: Antenna October 18th 18, 07:35 PM
Replies: 143
Views: 5,862
4NEC2?

On Thu, 18 Oct 2018 19:22:02 +0100, (Roger Hayter)
wrote:

Jeff Liebermann wrote:

On Thu, 18 Oct 2018 08:09:01 +0000, Spike
...
Forum: Antenna October 18th 18, 06:01 PM
Replies: 143
Views: 5,862
4NEC2?

On Thu, 18 Oct 2018 08:09:01 +0000, Spike
wrote:

On 18/10/2018 01:35, Jeff Liebermann wrote:

diversion into a side-topic snipped

It wasn't a diversion, but if you...
Forum: Antenna October 18th 18, 05:48 PM
Replies: 143
Views: 5,862
4NEC2?

On Thu, 18 Oct 2018 14:32:01 +0100, Custos Custodum
wrote:

On Wed, 17 Oct 2018 17:01:33 -0700, Jeff Liebermann
wrote:

On Wed, 17 Oct 2018 20:55:22 +0100,...
Forum: Antenna October 18th 18, 02:35 AM
Replies: 143
Views: 5,862
4NEC2?

On Wed, 17 Oct 2018 14:32:20 +0000, Spike
wrote:
The clash of cultures between the open-minded out-of-the-box thinker,
and a rules-and-regulations-trump-everything...
Forum: Antenna October 18th 18, 01:01 AM
Replies: 143
Views: 5,862
4NEC2?

On Wed, 17 Oct 2018 20:55:22 +0100, Custos Custodum
wrote:

On Wed, 17 Oct 2018 08:00:55 -0700, Jeff Liebermann
wrote:
Much of the stuff I fix was sent
to me...
Forum: Antenna October 17th 18, 04:12 PM
Replies: 143
Views: 5,862
4NEC2?

On Wed, 17 Oct 2018 10:36:45 +0000, Spike
wrote:
That's the sort of road that Liebermann wanted to take the discussion
down; an interesting topic but not the issue under...
Forum: Antenna October 17th 18, 04:00 PM
Replies: 143
Views: 5,862
4NEC2?

On Wed, 17 Oct 2018 08:48:04 +0100, Gareth's Downstairs Computer
wrote:

On 16/10/2018 20:47, Jeff Liebermann wrote:

Let me bring it closer...
Forum: Antenna October 16th 18, 08:47 PM
Replies: 143
Views: 5,862
4NEC2?

On Tue, 16 Oct 2018 13:22:28 -0400, Ralph Mowery
wrote:

Again, it all depends on the mechanic. The computer tune may only get
you a small improvement and it will take...
Forum: Antenna October 16th 18, 05:17 PM
Replies: 143
Views: 5,862
4NEC2?

On Tue, 16 Oct 2018 07:44:53 +0000, Spike
wrote:

Very interesting, but I'd have to say that none of what you say refutes
my original contention that the distant station,...
Forum: Antenna October 15th 18, 05:50 PM
Replies: 143
Views: 5,862
4NEC2?

On Mon, 15 Oct 2018 10:43:09 -0400, Ralph Mowery
wrote:

In article ,
says...

Consider a 2 tone...
Forum: Antenna October 15th 18, 05:45 PM
Replies: 143
Views: 5,862
4NEC2?

On Mon, 15 Oct 2018 12:16:14 +0000, Spike
wrote:

On 15/10/2018 01:20, Jeff Liebermann wrote:
On Sun, 14 Oct 2018 11:12:14 -0700, Jeff Liebermann
...
Forum: Antenna October 15th 18, 02:20 AM
Replies: 143
Views: 5,862
4NEC2?

On Sun, 14 Oct 2018 11:12:14 -0700, Jeff Liebermann
wrote:
(...)
However, if you plan to do more than that, some test equipment might
be useful.

Since you prefer a minimalist...
Forum: Antenna October 14th 18, 07:49 PM
Replies: 143
Views: 5,862
4NEC2?

On Sun, 14 Oct 2018 13:39:38 -0400, Ralph Mowery
wrote:

I don't know anything about the tractor trailer wiring, but around 1972
I picked up extra money repairing the...
Forum: Antenna October 14th 18, 07:33 PM
Replies: 143
Views: 5,862
4NEC2?

On Sun, 14 Oct 2018 18:50:34 +0100, Brian Morrison
wrote:

On Sun, 14 Oct 2018 10:42:24 -0700
Jeff Liebermann wrote:

For what it's worth, I don't know...
Forum: Antenna October 14th 18, 07:12 PM
Replies: 143
Views: 5,862
4NEC2?

On Sun, 14 Oct 2018 08:49:51 +0000, Spike
wrote:

On 13/10/2018 20:43, Jeff Liebermann wrote:

I understand how antenna work and how to predict performance. I can
...
Showing results 1 to 25 of 500

 
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