LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
  #11   Report Post  
Old October 29th 05, 01:03 AM
Richard Clark
 
Posts: n/a
Default HIGH Q CAPS FOR VLF LOOP ANTENNA?

On Fri, 28 Oct 2005 18:33:23 -0400, TRABEM wrote:

When you said "Well, this is a good opportunity to examine
that tumble down the slope to the Q = 2 (caused by the severe
loading of your proposed design)"...................did you mean
to say or to infer '(caused by the severe loading of your old (now
defunct) series resonant loop design"???


Yes
of course.

You have asked a number of questions outside of this old (now
defunct) design, but you haven't, as far as I can tell, formalized a
replacement.

The ancillary point that I've made is that the original could work.
However, you've never stated any operating specification to test that
against. I've offered that all components need to be scrutinized in
the face of your goal. We saw where that lead.

You've only specified your desire for High Q capacitors (properly, low
D capacitors). I offered that ESRs vary widely and could easily
derail your goal. The presence of an ESR equal to the 0.06 Ohm of the
loop is very well within being guaranteed. It still is. Reg
dismissed this as inconsequential. So be it, but being that it is
easily remedied through selection, then why toss away half your Q to
casual indifference?

What Reg actually meant, and he has a hard time with that given he can
often be found on both sides of an argument, is that such loss may not
matter. There I agree, but this does not advance the topic of High Q
Caps for VLF Loop Antenna when they can be obtained.

73's
Richard Clark, KB7QHC
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Inverted ground plane antenna: compared with normal GP and low dipole. Serge Stroobandt, ON4BAA Antenna 8 February 24th 11 10:22 PM
WHY - The simple Random Wire Antenna is better than the Dipole Antenna for the Shortwave Listener (SWL) RHF Shortwave 15 September 13th 05 08:28 AM
The "TRICK" to TV 'type' Coax Cable [Shielded] SWL Loop Antennas {RHF} RHF Antenna 27 November 3rd 04 01:38 PM
Poor quality low + High TV channels? How much dB in Preamp? lbbs Shortwave 16 December 13th 03 03:01 PM
QST Article: An Easy to Build, Dual-Band Collinear Antenna Serge Stroobandt, ON4BAA Antenna 12 October 16th 03 07:44 PM


All times are GMT +1. The time now is 02:26 PM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 RadioBanter.
The comments are property of their posters.
 

About Us

"It's about Radio"

 

Copyright © 2017