Hi Jim (Murray)
Jim K9YC is absolutely right - I live in a similar situation to you and the
problems have been markedly improved by getting the grounding and bonding to
earth improved around the house - wish I had taken Jim's advice years ago.
House earths are often very simple at best and whi
G’day
For those who are wondering where the VKs have gone on 160m, the answer is we
have had high levels of QRN for the last two weeks- plus. Whenever I have
turned on at sunset or during the evening, the needle is hitting S9+ with
static crashes. Looking at the evening news weather map, it ha
We have had dry weather here in the Northeast US and the noise levels have been
low. I've been working DX on 160 around sunrise. Hope your noise levels go down.
Mike N2MS
- Original Message -
From: Steve Ireland
To: Topband reflector
Sent: Wed, 28 Oct 2015 07:43:18 - (UTC)
Subject:
The amount of MF radio garbage that is running around common mode on power
lines, phone lines, metallic pipes, etc, is pretty amazing. I've walked
around with my battery K2 listening next to power pole ground wires, buried
power lines where they enter the ground.
The garbage level goes down very q
I ran into a rather odd source of RFI, possibly common mode.
I had 2 transformer type Astron power supplies in the ham shack.
One was a 15 amp desktop type, the other a 35 amp rackmount unit.
My observation is that when both were on, a buzz was detectable on various
frequencies in the 160 band. If
On Wed,10/28/2015 8:34 AM, Guy Olinger K2AV wrote:
I've walked
around with my battery K2 listening next to power pole ground wires, buried
power lines where they enter the ground.
Yes, and those wires are transmitting antennas, so they radiate that
noise like any other antenna.
The earth is
I suggest that you grab an Ohmeter and check that the green wire on the
power cable is connected to the chassis. On all of the Astrons I've
checked, it was not -- it was soldered to the mounting lug of a terminal
strip, which was insulated from the chassis by paint. On one of the
units, the two
Thanks Steve. I agree but didn't expect this problem. Should have known this
could be a problem since this is an older home that has been remodeled.
Regardless of the outcome with the power company I've been studying Jims
writings on grounding and bonding and finding things that don't look ri
On Wed,10/28/2015 1:49 PM, Jim Murray via Topband wrote:
Thanks Steve. I agree but didn't expect this problem. Should have known this
could be a problem since this is an older home that has been remodeled.
Regardless of the outcome with the power company I've been studying Jims
writings on
Everything you do properly to reduce the chance of common mode noise being
conducted into the house will also reduce RF feedback, power line fault
damage, and lightning damage risks.
Even if it makes no difference in noise, it pays back in increased safety.
This house had expensive lightning p
The Results and write-up for the 2014 Stew Perry contest have been posted.
http://www.kkn.net/stew/2014_Stew.htm
There is still time to send in your PreStew log if you have not.
Preliminary results for that event are updated daily here:
http://www.kkn.net/stew/2015_PreStew.txt
The big Stew is c
I have and electrician coming next week who says he will check things out and
first of all ground the breaker panel to two ground rods 7 feet apart. I
thought the grounding was put at the meter but he says they don't do that
anymore. I think the old meter, before we had the new one put in had
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