LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
  #11   Report Post  
Old May 29th 09, 11:16 PM posted to rec.radio.amateur.antenna
external usenet poster
 
First recorded activity by RadioBanter: Jul 2006
Posts: 666
Default Dual-Z0 Stubs

Cecil Moore wrote:
Jim Kelley wrote:
Cecil Moore wrote:
Myths and old wives' tales die hard.


So please stop trying to invent new ones.


I'm not doing that, Jim, just trying to lay the
old ones to rest, e.g. a 3 nS delay through a
10" long 75m bugcatcher loading coil. Please
don't tell me that you believe that a 4 MHz
signal can travel through a large 10" inch
coil in 3 nS - a coil that exhibits a VF of
0.04. That's about seven times the speed of
light.


Given that the speed of light is roughly 3 x10^8 meters per second, and
it would ordinarily take less than a nanosecond to traverse the 10",
it's not *THAT* unbelievable. The delay would depend on the series
inductance and shunt capacitance of the coil. What are those numbers?

ac6xg

 
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
FA: Yaesu FT-8100R like new dual band dual recieve Rich Equipment 0 October 21st 06 12:13 AM
FA: HTX-204 Dual Bander! Like the ADI AT-600 Jimmy Mac Swap 0 February 21st 05 12:28 AM
DUAL not duel. DUH! W2RAC Swap 10 December 8th 04 01:44 AM
Dual Band HT Curt Grady Swap 0 January 4th 04 03:40 PM
WTB: UHF or Dual band ham rig.. Rod Swap 0 September 25th 03 01:14 PM


All times are GMT +1. The time now is 10:46 AM.

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