The weak signal CW recordings on AB7E's website are well worth a few minutes to listen to. His recordings clearly demonstrate -- much more convincingly than any other demo I've ever heard-- the signi
Hi Don, I was surprised to see some very active countries cannot operate above 1850 kHz at all; for example: 9K CT F LZ SV TA TF ZS Severe power restrictions above 1850 are very common as are restric
Hi Ed, Despite your experience, Europe can't call you on 1811 LSB either... Operators in those European countries with SSB priveleges below 1840 can only call you on a suppressed carrier frequency of
Hi Roger, The inexpensive 160 meter W3LPL receive only bandpass filter provides more then 20 dB rejection at 1700 kHz, more than 30 dB below 1600 kHz, more then 40 dB below 1500 kHz and more than 60
Hi Tim, While RDF is helpful, nothing substitutes for devoting the effort to analyze the detailed antenna pattern. RDF is especially useful in quiet rural areas with very few homes and power lines an
The correct URL is: www.qsl.net/k1fz/bogantennanotes.html -- Original Message -- IV3PRK at HC1PF with the help of friends proved with extensive research and modeling, that a BOG antenna is a tuned ci
Hi Lee, I recently had exactly the same experience with my 160 meter W8JI passive 8-circle array. About six weeks ago intense broadband white noise appeared at my QTH arriving at about 325 degrees az
Hi Ed, Its very suspicious that your RFI peaks right at 1820 kHz. Can you hear the RFI on your transmitting antenna? Can you hear the RFI on a portable receiver placed immediately adjacent to your 4-
Hi Art, If its any of your suspected sources you should be able to observe spectral shape (signal strength variation vs. frequency) on a panadapter or by simply turning the dial on your receiver. If
Hi Frank, The problem with a common ground for multiple Beverages is that it isn't really "ground" at all. Inevitably it has significant resistance, The signals received by your eight Beverages will
Hi Mike, If you must use a single ground rod for multiple Beverages, the ONLY active connections to the ground rod should be the connections to the selected Beverage. All other connections to that gr
Hi Felipe, As W4ZV noted in his posting, three meter ground rod spacing was not enough when he brought multiple Beverages to a common point. A much better solution is to use inexpensive hermetically
Hi Gary, The link in your email is their current location in Mayotte where they were active as FH/F2DX and FH/F6BEE. Juan da Nova, the future location of FT4JA, is 340 miles to the south-south-west.
Hi Dick, I have an AA-54 and its the best hand held antenna analyzer I've ever owned. 73 Frank W3LPL -- Original Message -- Greetings All I am getting fed up with multiple trips between new antenna m
Hi Felipe, I've never done Beverage switching in my antenna field, my nine receiving antenna feedlines go individually to my shack. But I'll speculate a bit, perhaps others can comment based on their
The Quartz Hill Contesters -- once very well known as ZL6QH -- were forced to shut down their spectacular contesting location by the RFI from a wind farm installed in the same location as their conte
Hi Jim, FT4JA was very weak with lots of deep QSB here last night, They would peak up to S5 for a few seconds then fade into the noise for a few minutes. In two hours of listening I heard only one co
Hi Jim, A properly constructed loop antenna absolutely requires a preamp. If signals are so strong that you don't require a preamp then its likely that the signals you're hearing are not actually com
Hi Raoul, Congratulations, its difficult to do better than a 40 dB null. It usually takes a great deal of care with proper loop balance and excellent feed line common isolation to achieve that excell
Ground rod problems aren't unusual, among the many excellent alternatives is to use chicken wire laid on the ground or slightly buried. One of my former employers built hundreds of Beverage antennas