RE: [Elecraft] RF Noise canceller ?

2005-04-03 Thread Peter Zenker
Hello Marinos, There have been several schematics using such technics over the last 20 years. Most of them use a seperate short antenna, feeding the signal pase shifted into a combiner which combines the main Antenna Signal with the phases shifted extra antenna signal. This construction can

Re: [Elecraft] RF Noise canceller ?

2005-04-03 Thread Bill Tippett
http://www.mfjenterprises.com/products.php?prodid=MFJ-1025 http://www.w8ji.com/mfj-1025_1026.htm 73, Bill W4ZV ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change,

RE: [Elecraft] RF Noise canceller ?

2005-04-03 Thread Marinos Markomanolakis, M.D.
Hi Peter, Would this type of noise canceler not work on white noise also ? 73, Marinos, ki4gin From: Peter Zenker [EMAIL PROTECTED] To: 'Marinos Markomanolakis, M.D.' [EMAIL PROTECTED],elecraft@mailman.qth.net Subject: RE: [Elecraft] RF Noise canceller ? Date: Sun, 3 Apr 2005 13:03:51 +0200

Re: [Elecraft] RF Noise canceller ?

2005-04-03 Thread G3VVT
In a message dated 03/04/05 12:11:33 GMT Daylight Time, [EMAIL PROTECTED] writes: There have been several schematics using such technics over the last 20 years. Most of them use a seperate short antenna, feeding the signal pase shifted into a combiner which combines the main Antenna

RE: [Elecraft] RF Noise canceller ?

2005-04-03 Thread Peter Zenker
, April 03, 2005 3:26 PM To: [EMAIL PROTECTED] Cc: elecraft@mailman.qth.net Subject: RE: [Elecraft] RF Noise canceller ? Hi Peter, Would this type of noise canceler not work on white noise also ? 73, Marinos, ki4gin From: Peter Zenker [EMAIL PROTECTED] To: 'Marinos Markomanolakis, M.D

RE: [Elecraft] RF Noise canceller ?

2005-04-03 Thread Robert McGwier
-Original Message- Would this type of noise canceler not work on white noise also ? ___ The simplest answer is no. White noise typically arrives from random directions, with random phases, random polarizations, etc. etc. etc. and are usually from thermal

RE: [Elecraft] RF Noise canceller ?

2005-04-03 Thread Ron D'Eau Claire
Would this type of noise canceler not work on white noise also ? 73, Marinos, ki4gin That depends a lot on the source of the noise, broadband (white) or otherwise. These circuits depend upon a second antenna picking up the noise better than the signal. Then the signal from the noise antenna

RE: [Elecraft] RF Noise canceller ?

2005-04-03 Thread Sverre Holm
-Original Message- Would this type of noise canceler not work on white noise also ? __ White noise typically arrives from random directions, with random phases, random polarizations, etc. etc. etc. and are usually from thermal and uncorrelated sources. ---