Hi Rick, Wes,
I said it was a "killer piece of copper". I did not compare it to anything.
Mostly I like the way that edge-wound coil looks (what was on my mind when
I said "killer") The same way I like a lit up and glowing red 3-1000Z
putting out 1500 watts, or the spooky glow of 866A's and 872A'
-Original Message-
From: Richard (Rick) Karlquist
Sent: Friday, August 31, 2018 7:13 AM
To: Jim Thomson ; Guy Olinger K2AV
Cc: TopBand List
Subject: Re: Topband: Air Wound Coil
## What are you using to measure Q ?? I did discover one anomoly with
coils
and Q. XL increases
Besides the advantage in roller inductors, edge wound more easily accommodates
adjustable taps, using slide-on clips. It also makes the coil more
mechanically stiff, for a given number of turns per inch than does round wire.
That's probably the reason that edge-wound stock is more often used
On 8/31/2018 6:09 AM, Jim Thomson wrote:
## Are you sure about this ? I have used .25 edge wound rollers,
I am sure that flat conductors result in lower Q than round conductor.
I have done innumerable Q meter measurements to confirm this.
I didn't say that flat conductors don't work at
-Original Message-
From: Richard (Rick) Karlquist
Sent: Thursday, August 30, 2018 5:44 PM
To: Guy Olinger K2AV ; Jim Thomson
Cc: TopBand List
Subject: Re: Topband: Air Wound Coil
On 8/30/2018 3:44 PM, Guy Olinger K2AV wrote:
You can also get the edge-wound (flat) 1/4 inch by 1/16
Trevor, You do not make it clear whether you want to match the antenna with
a hairpin match or with an L match. I find with a hairpin that the
inductance does not change much from the needed but the top loading will
need adjusting. You may find it better to put the 1:1 point at something
like 1.830
Thanks again for all the replies Guys, I am running so late on getting ready
for this season I am just looking for a quick and easy way out,
I'll get the vertical up and see what I need, I might be over complicating
things as usual,
Thanks
Trevor
EI2GLB
- Original Message -
From: "MR T