[Hammarlund] !5 Khz across the 10 meter band

[Kim Herron]

Hi Gang,

     Just thought I'd mention my own experience with noise.
I'm out in the middle of a very sparsely populated area.  When
I moved here it was dead quiet. Less than S-1 noise level on the R-4C
or 75S-3B.  Then slowly I noticed that it was getting noisier and noisier.
So I went looking for the noise.  I found that the television, VCR, computer
and it monitor were all contributing to the problem.  My new TV has 15 khz 
spurs
all the way up to 60 Mhz.  It wipes out the BC band on the older radios 
that can here.
the cheap ones that can't are devoid of the noise, but receive only one or 
two stations
anyway.  I'm sure that it's a combination of the oscillators and the 
switching power supplies
in the gear.  If I shut off the power to them all, we're back to an S-1 
noise level.  Outside
antennas with shielded and grounded lead wires help a lot but it's never 
completely gone.
How do you fix it??  Buy a bunch of split cores for the power leads to go 
through,
make sure that all the cables are shielded, and finally get rid of the 
noisy stuff and replace it
with items that are quiet.  I did that with the computer and the monitor 
(both are now NEW HP's)
and one TV.  The other one and the VCR I'm working on methods to eliminate 
the noise.
Oh, the CD player is a contributor as well.  Cores on the power cable and 
GOOD shielded cables
helped that problem.   AIN'T HAM RADIO FUN!!



Thanks!!

Kim Herron
1-616-677-3706