I know a crystal radio enthusiast in CA that lives near a 50KW BCB radio station. He's been having trouble making Q-meter measurements on some of his hi-Q coils using a HP Q-meter. He's been making e
On 5/12/2013 1:00 PM, Jim Brown wrote: On 5/11/2013 8:34 PM, n0tt1@juno.com wrote: My question to the group is what, in your opinion, is the best/cheapest RF-tight test room he could build for himsel
On 5/12/2013 1:37 PM, Jeff Stevens wrote: Has anyone had success specifying a term such as 'RFI Free' when dealing with a contractor? Whenever there is AC (or worse yet, square waves) there is going
On 5/20/2013 4:05 PM, kr7o@vhfdx.com wrote: Wireless headset. They started showing up a few years ago in Canada through Amazon and maybe Walmart (?) from what I have read. They are powerful enough to
On 6/4/2013 2:12 PM, David Robbins wrote: that sounds like a nice idea, but is much harder than it sounds. first, the software would have to know how to sort out the noise from the desired signals. i
On 6/4/2013 6:26 PM, Roger (K8RI) wrote: On 6/4/2013 2:12 PM, David Robbins wrote: that sounds like a nice idea, but is much harder than it sounds. first, the software would have to know how to sort
Reading what the govt wants to do, may have dire consequences for amateur radio as they are proposing/pushing for a reduction of exposure limits by a factor of 1000. This article deals primarily with
http://depletedcranium.com/devra-davis-refuted/ Thanks for the link. I had a suspicion after reading the article posted here and "the references" 73 Roger (K8RI) Devra Davis _________________________
On 6/14/2013 1:01 PM, Peter Laws wrote: On Fri, Jun 14, 2013 at 11:19 AM, qrv@kd4e.com <qrv@kd4e.com> wrote: Trogladite-Leftists aren't troubled by poor English let alone obvious lies. Gee, I'm a lef
Less RFI and the consumer grade crap we've bought over the years gets overhauled to meet the new spec, thus making listening FUN again????? And you'd need a 2 acre lot (possibly 5) and a 100' tower t
I did notice while we were going up the stairs to the garage that there were two vents. One looked like an "intake" and the other an "exhaust" which had warm air coming out of it. I did not notice a
While the hash noise must truly be bad news, that 50V on the CATV line could be even worse. Is that 50VDC or 50VAC? It sounds as if the cable company has a serious problem extending into the realm of
On 8/22/2013 6:30 PM, Jim Brown wrote: On 8/22/2013 2:58 PM, Charlie Gallo wrote: Well, there was some arcing at the ground block in the past, so I lifted the coax to slip on the ferrites, and the vo
6 turns of LMR400 on 6 2.4" #31 cores works fine. You might need a little silicone grease for that last turn, but I did them dry. Turn diameter is about 5 - 6 inches slightly flattened with no center
Sad to say, that unless you are successful with the application of decoupling and filtering techniques to eliminate the RFI to the TV, your best cure will be to relocate that sloper further away from
The part of the monitors that blow up with RF is the touch controls. That makes sense, in a perverse way -- they work by capacitive coupling, so they are high-Z and thus difficult to bypass. I was co
Above all, keep your name out of it as much as possible, or you could have some very unsavory critters looking to pay a visit. The police raid the wrong house, shoot an innocent person (happening mo
On 10/2/2013 3:38 AM, Rick Kiessig wrote: A while back, I decided to clean up some wiring in my shack. I grouped some wires together with either twist-ties or a clamp-on toroid, routed them to look n
I purchased a Kidde NightHawk CO2 detector model KN-COP-DP-LS, it is designed to plug into a wall outlet plus it has a 9 v. battery backup and LED readout. While transmitting on 80 meters after a whi
CO2 is not normally poisonous. Don't mistake suffocating for poison. It replaces the Oxygen in the air. You continue to breathe, but get no oxygen and never notice the difference. It is why I mention