On Sun, 22 Oct 2006 10:43:46 +0100, charlie
wrote:

My two sources of interference are the switch mode PSU for my HP
6620 networked printer and from my Samtron 76E monitor. I have only
recently returned to amateur radio after a 40 year break so am still
working on these niggles. Solving the printer PSU problem is as
simple as unplugging it but the monitor may well be more
complicated, especially if it is radiated from the deflection coils
rather than mains borne. Does anyone know if TFT monitors are
quieter at RF?


Charlie.


I use a TFT and i have very little QRN. It adds less than 1% of the
existing noise

MY only sources of noise a
1. the sat system . I have put a HDD of 80 GB. It adds a razor noise
apparent on 6-13 MHz stronger on 11 MHz and on my 16 m hor anternna
The 2x16 m antenna does not receive so much

2. two nearby grid towers . These towers are abt 30 m from our home.I
found strong noise of S9 on my 2x16 m across all bands and happens
mainly on summer periods. This year the noise changed freqs and was
apparent on 0-5.5 mHz but not all times ... The stronger was on the MW
band with S10