Received-SPF: neutral (google.com: 193.82.116.20 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org)
Message-ID: <028201c75d0f$42154010$7900a8c0@athlon1200>
From: "Dave Brown" <tractorb@ihug.co.nz>
To: <rsgb_lf_group@blacksheep.org>
References: <003601c75cef$a056a300$0c01a8c0@acer5gi5q0ubzj>
Date: Sat, 3 Mar 2007 10:10:50 +1300
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Subject: LF: Re: RFI from 136kHz transmissions
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Status: O

John
No problems on 182 kHz with 800 watts into a 50 by 25 foot loop and 
neighbours within 10-30 metres on all sides. I can't recall any 
interference issues over the last 15 years with any of the other ZLs - 
most running significant output power into mainly Marconi style 
antennas.
 The only 'complaint' I have had re LF operation since 1992 wasn't 
really a complaint but more a comment/query from a ham a couple of 
blocks away back in the early days- I had a 10 watt beacon running 
continuously for a few weeks on 181 kHz and had a ring one day from 
this chap to say I must have a crook  transmitter as he could hear my 
call sign down the bottom of the AM broadcast band--and what HF band 
was I on and why was I transmitting all the time anyway! An LPF fixed 
that one.
73
 Dave, ZL3FJ


----- Original Message ----- 
From: "John W Gould" <jwgould@iee.org.uk>
To: <rsgb_lf_group@blacksheep.org>
Sent: Saturday, March 03, 2007 6:24 AM
Subject: LF: RFI from 136kHz transmissions


In the discussion that I am currently having with Ofcom over the RFI
assessment for 501-504kHz applications, the question has been raised 
as to
whether interference has been noted with nearby neighbours, etc, from 
the
transmissions at 136kHz.

snip*********