[Lowfer] A field strength question

[jrusgrove at comcast.net]

Andy

All will be revealed in this excellent writeup: 
http://www.w1tag.com/LF_FSM.htm

I've duplicated John's measurment and calibration setup and it works FB. To 
date I've taken over 100 measurements of WD2XNS from as near as 1 mile out 
to about 20 miles in about a dozen compass directions. Close in measurements 
(under about 2 miles) show the largest day/week/month variations and should 
probably be avioded.

Jay


----- Original Message ----- 
From: "Andy - KU4XR" <ku4xr at yahoo.com>
To: <lowfer at mailman.qth.net>
Sent: Saturday, June 21, 2008 11:50 PM
Subject: [Lowfer] A field strength question


> Gentlemen:
> I would appreciate anyones answer to this question regarding measuring
> field strength. Hobbyist operators are allowed a maximum permissible 
> radiation of;2400/Freq.(KHz) microvolts/Meter as measured at 300 meters 
> from the xmit antenna,while operating in the 160 to 190 KHz range.
> *** Question : what does the /meter -( per meter ) refer to ?? In the 
> recesses of my memory, I keep thinking it to refer to the size of the 
> antenna on the receiving/measuring device. I've searched the net in
> vain trying to get a clear answer, even the FCC website, but can't seem to 
> be sure that this is the correct assumption. I have a genuine interest in 
> knowing this technical way to determine signal output. This is of course 
> the way the FCC would measure the output of a signal they monitored. I am 
> fully aware of the 1 watt input/50 foot height issue, so please don't 
> bother going there. If you can answer my question, and would be kind 
> enough to share your knowledge with me; I will appreciate it.
> Thanks; and 73 to all: Andy - KU4XR
>
>
>
> _______________________________________________
>>From the Lowfer mailing list
> Send messages to: Lowfer at mailman.qth.net
> To sub/unsub visit: http://mailman.qth.net/mailman/listinfo/lowfer