Hi Art, Signals arriving at the BOGs are not travelling in the ground, therefore their velocity of propagation (Vp) is unaffected by the ground. B roadside spacing should be 350 feet. Echelon spacing
Hi Chuck, Of course, W8JI's reply is right on the mark. The Vf of the BOG affects only signals transiting the BOG wire in transmission line mode, it has no affect of the placement of BOG antennas in
Hi Dave, You might need to use a TDR to identify the extent of cable damage. Hopefully the flooded cable limited the extent of damage, but water can intrude quite a long distance into some brands of
Hi Bruce, I also listened a few times on 630 meters over the weekend. My 580 foot Beverages worked great as receiving antennas with a K3S. Although they're much too short to provide much useful direc
A Time Domain Reflectometer is one of the best tools to verify the proper performance and isolate faults of a Beverage and many other types of antennas. In the case of a Beverage, the TDR allows you
Hi Frank, My TDR is nearly fifty years old, but still it works great. Array Solutions sells more modern multi-functions devices that are perform very well as a TDR. Here's an example display from Arr
Hi Jorge, The AIM4170 has TDR capabilities. I don't own an AIM470, but surely someone on the Topband reflector can help you use it as a TDR. 73 Frank W3LPL -- Original Message -- Hi Frank I google an
Much more affordable 3/8-32 nickel plated brass nuts are widely available on eBay 73 Frank W3LPL -- Original Message -- Wow, stainless 3/8-32 panel nut from Grainger, part number 1JLU9, $15 for 2. Ma
Hi Mike, Beverages, four squares and 8-circle arrays are all excellent receiving antennas. Based on much on the air experience, my W8JI passive 8-circle BSEF arrays have much narrower beam width than
VP8STI was solid copy in Maryland -- 559 to 579 -- from the Southeast from 0000Z to about 0110Z. Dimi was working only Europe until about 0045Z, He worked dozens of North Americans from about 0045Z t
Hi Steve, While a SAL-30 is an excellent receiving antennas -- especially when space is limited -- a 580 foot Beverage has significantly better performance. 73 Frank W3LPL -- Original Message -- Anyo
Hi Joel, My W5ZN/N4HY/W8JI passive 8-circle array really shines during this changeable and often spotty propagation from VP8STI. Its consistently significantly better than my south Beverage and 4-squ
Hi Jorge, You want flooded RG-6/U with the polyetheleyne (not PVC) jacket, such as: http://www.dxengineering.com/search/product-line/dx-engineering-6uf-75-ohm-dual-shield-coaxial-cable?autoview=SKU&k
Hi Jim, The NORD antenna is a relatively inexpensive low frequency antenna (typically used at 50-100 kHz) where its impossible to achieve vertically polarized antennas with close to 1/4 wavelength ve
A few weeks ago I noticed a new source of intense broadband RFI had appeared on 160 meters and adjacent frequencies from approximately 1500-2000 kHz. There is no trace of RFI on any other frequencies
Hi Mike, Ah... The sweet sound of silence! Now if only there were some Topband activity,,, My county Office of Emergency Management was very responsive and took their Travellers' Information Station
Hi Mike, We never needed to use the loopstick antenna in the PL-660 receiver. Because I had a very accurate bearing from my 350 foot diameter 8-circle receiving array, we simply used the PL-660 S-met
Hi Jeff, My consistent practice is to identify the highest frequency where I can hear the RFI in my shack. I then use my directive antennas to determine the bearing on which I should search. I can co
Hi Stan, There are countless thousands of poles within five miles of my QTH, his method could not possibly work here. If I tried, I would lose my excellent reputation with my power company RFI crew.