Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1   Report Post  
Old August 29th 18, 08:00 PM posted to uk.radio.amateur,rec.radio.amateur.homebrew
external usenet poster
 
First recorded activity by RadioBanter: Mar 2017
Posts: 209
Default Low impedance earth for upstairs shacks

Coming out of the fish and chip shop tonight, my eyes
alighted on the lightning conductor on the adjacent
building.

Aha! I bethought me, thich copper strap; low impedance
earth for my upstairs shack.


  #2   Report Post  
Old August 30th 18, 08:22 AM posted to uk.radio.amateur,rec.radio.amateur.homebrew
external usenet poster
 
First recorded activity by RadioBanter: Aug 2006
Posts: 20
Default Low impedance earth for upstairs shacks

On 29/08/2018 20:00, Gareth's Downstairs Computer wrote:
Coming out of the fish and chip shop tonight, my eyes
alighted on the lightning conductor on the adjacent
building.

Aha! I bethought me, thich copper strap; low impedance
earth for my upstairs shack.

Could be. Cue the protagonist arguments over PME/ non-PME which
degrades into name- calling over some legal dispute(s).
--

---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus

  #3   Report Post  
Old August 30th 18, 09:50 AM posted to uk.radio.amateur,rec.radio.amateur.homebrew
external usenet poster
 
First recorded activity by RadioBanter: Mar 2017
Posts: 209
Default Low impedance earth for upstairs shacks

On 30/08/2018 08:22, Catweazel wrote:
On 29/08/2018 20:00, Gareth's Downstairs Computer wrote:
Coming out of the fish and chip shop tonight, my eyes
alighted on the lightning conductor on the adjacent
building.

Aha! I bethought me, thich copper strap; low impedance
earth for my upstairs shack.

Could be. Cue the protagonist arguments over PME/ non-PME which
degrades into name- calling over some legal dispute(s).


Mine is TT but nevertheless wish a separate earth for the shack ...

1. No 1/4 wave away high RF spots when family member touches
a central heating radiator.

2. Household induced noise not conducted through.

  #4   Report Post  
Old August 30th 18, 11:56 AM posted to uk.radio.amateur,rec.radio.amateur.homebrew
external usenet poster
 
First recorded activity by RadioBanter: Aug 2018
Posts: 11
Default Low impedance earth for upstairs shacks

On 30/08/18 08:22, Catweazel wrote:
On 29/08/2018 20:00, Gareth's Downstairs Computer wrote:
Coming out of the fish and chip shop tonight, my eyes
alighted on the lightning conductor on the adjacent
building.

Aha! I bethought me, thich copper strap; low impedance
earth for my upstairs shack.

Could be. Cue the protagonist arguments over PME/ non-PME which
degrades into name- calling over some legal dispute(s).
--

---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus

=======
An effective RF earth for an upstairs shack is a C + L series resonant
circuit with current sensing indicator attached to an insulated wire on
the ground (under carpet) and the transmitter's earth connection.

It can be easily home-brewed . Either by a L roller coaster or a tapped
switched (air) inductor + a variable capacitor .

The current sensor is a toroid transformer through the current flowing
wire and a winding attached to a microA/lowmA moving coil meter
adjustable with a potmeter.

The above circuit needs to be adjusted for maximum current.......also
each time the tx freq is changed. It works well.

Frank , EI7KS a Linux only user


Reply
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
[RADARC] 53 years of Earth-Moon-Earth (EME), then and now RADARC via rec.radio.info Admin Info 0 March 4th 17 12:51 AM
Impedance of a wire over the earth [email protected] Shortwave 6 September 19th 06 04:05 PM
CALCULATION OF EARTH RESISTANCE IN MULTI-LAYER EARTH STRUCTURE [email protected] Antenna 2 January 12th 05 04:41 PM
CALCULATION OF EARTH RESISTANCE IN MULTI-LAYER EARTH STRUCTURE [email protected] Equipment 1 January 11th 05 06:14 PM
Cool Shacks R. F. BURNS CB 6 January 12th 04 11:13 PM


All times are GMT +1. The time now is 09:08 AM.

Powered by vBulletin® Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Copyright 2004-2018 RadioBanter.
The comments are property of their posters.
 

About Us

"It's about Radio"

 

Copyright © 2017