The reflector [and I] have received several messages with links to various sites that write about synchronous noise blankers. My original question was directed at finding out if anyone on the reflect
Tom sent me this directly and I thought I would put it on the reflector so there is a wider awareness of his experience with synchronous blanking circuits from some time ago. He notes also that elect
I contacted Dick, WA3USG, who had actually built and used a synchronous noise blanker. He was kind enough to give me some observations based upon his use. Most importantly, he provided URLs to two wa
Actually, both types are defined by hardware but let's not be picky. I , and I suspect many others, are the beneficiaries of this 'mild' disagreement between two guys with a lot of 'smarts' and exper
Is the noise similar to or related to the noise that was on 7120-7160 kHz this morning [5:45 AM MDT]? I looked at that one with a spectrum analyzer and a couple days ago recorded a small time segment
When we recognize people who make very significant contributions to Topband success and enjoyment I suggest we put Bill Tippet, W4ZV, our list manager/moderator very close to the top of that list. Wi
Jim: I have not been paying attention to this thread until now. What parameters are you looking for in the choke you are planning to make? I have a few of the 2.4" type #31 cores and some Teflon coax
I know that there are a number of fellows on this reflector who are skillful at computer modeling of antennas -- I wish I was one of them. I have, however, made a stab at modeling an inverted L anten
I am using a Unadilla trap as an element of an 80-160m vertical antenna which is 52 feet high. At that point I connected a top loading wire for 160m. The wire length and orientation is adjusted to ac
In the recent [yesterday] Stew Perry warm-up I used my newly installed NCC-1 and a pair of ARAV2-1P active RX verticals. At my location with the installation parameters I used I found that there is a
Since the original posting I have made some additional measurements and wish to comment on the 1850 kHz spur I observed. This spur is apparently caused by the following: The DXE Active Vertical is de
As I recall 1 micron is 40 microinches [OK 39.39 microinches]. That would mean a 2 micron layer is 80 microinches or 0.00008 inches - about 50 times less than the "Highly polish-able" grade silver p
That's life on Topband, not 5 kW in the attic. Tod, K0TO _______________________________________________ Topband mailing list Topband@contesting.com http://lists.contesting.com/mailman/listinfo/topb
Well today is a special day. This morning at 0030 local time [0730 UTC] I heard G3FPQ, David, calling CQ and occasionally working East Coast stations. The signal varied between 569 and 579. David has
A terrible error -- I mis-typed my friend Bob Leo's call. I typed W7LT but is should have typed W7LR. {I don't know why they decided that "T" and "R" should be that close on my keyboard. My apologies
Based on those curves I would suggest folks get W3NQN's articles about RX filters and build one of them. The results should be a lot better in squashing the BCB signals at 1700 kHz and lower. They at
Joe: Have you actually tried this or is it a thought that ought to work? If you have tried it I am curious to know how you handled the injection of signals [from the choice of three]. I own the NCC-
Josep: It may be informative to look at one of my web pages that has several links to experiments I performed using an MFJ-1026. I believe the ANC-4 is similar though not identical to the 1026. You w
I occurred to me that I should have posted this to the reflector rather than only to Jon Yes. The NCC-1 costs about 2 times the price of the MFJ-1026. Both units will cancel noise quite well. The NCC
As I understand things one does NOT get QRP credit unless the QRP station submits a log. If, as a hypothetical, one were to make an error in copying the power and entered a "Q" in the log rather tha