Yeah, you can force yourself, Bill! <:} Judging from some of the reports that have been posted, the Argo is doing much better than some ORION, both in accuracy and stability. Hi George, I wonder if I
Yeah, Bill, sometimes what we don't know doesn't worry us! <:} Might be worth the time and effort to zero everything in and then keep an eye on things as time moves on. Actually a daily log would pro
One key point is whether the computer system is approved by the FCC as Class A or B. If B, it should not be radiating much if any trash. If A, you take your chances. If not approved at all, which is
Jim, you can check the ORION's dial accuracy the same way. Set the dial to 10,001.000 LSB and see what DigiPan tells you it reads for 1000 Hz. If there is an externally accessible adjustment of the m
Jim, I use both MixW and DigiPan and have found that DigiPan seems to be better at making these frequency measurements. It seems to home in on the frequency quicker and more accurately and then to fo
Glad it works for you. I think you will find DigiPan a little easier to use for this . . . regardless of the program, though, you can end up chasing your tail! Have you thought about drilling a small
In order to contain strong signals and spurs, as well as perform their fundamental job of image-rejection, roofing filters must be installed as near the front-end of the receiver as possible. The pre
Patrick, start looking at how and why the SWR in the line from the tuner to the antenna is 1:1. That cannot be right unless the antenna input impedance is exactly the same as the Zo of the line. If i
Pat, what you are tuning to have a 1:1 SWR is the line between the tuner and the rig. The line between the tuner and the antenna will have the same SWR on it whether or not you use a tuner, etc. That
I have probably posted too much on this topic, but the author alludes to a point that can cause problems if not taken into consideration. Most 'amateur' dummy loads are really not exactly 50 ohm resi
Carl, I presume that your data is for the cascade of the analog roofing filter and the IF DSP filter in each case. Do you plan to make more extensive passband measurements using a noise generator and
Because it is not a damped wave which is what the old spark gap rigs put out. The dot or dash would start out at full amplitude and then start decaying or damping at a rate not to exceed a certain am
Well, maybe, but I think that I'll just set the dial to the proper frequency for the center of a 2.8 KHz (or less) occupied bandwidth less 1400 Hz. Haven't used crystals since 1947 when I built my fi
The government and the military, in short. They specify frequency in terms of the center frequency of the occupied bandwidth or channel width. Hams use the transmitted frequency for all carrier-prese
Boy, I sure hope you can! That was a wowzer of a typo, wasn't it? <:} Funny thing, I did not notice it at all until I re--read your posting. I guess we all sorta knew what you meant . . . Thanks, Kip
You have described one of the several heartburn areas in the R&O. Determining compliance with the "50 watts ERP" with an arbitrary antenna setup is another. I think that the intent of the language is