Hi Mike, Yes, I meant use of XELEDOP to measure the patterns of arrays of Beverage antennas. The results of XELEDOP measurements of the patterns of a large electrically steerable array of 220 foot Be
Hi Lee, It doesn't have to end this way... The U.S. Navy AN/FPS-12 Over the Horizon Radar (one of a series of 1960s and 1970s CHECKROTE HF radars ) in White House, Virginia was dismantled in 1987 to
Hi Ken, Small diameter "magnetic" loops such as the Pixel can be very effective in nulling a single vertically polarized local RFI source, fortunately most local RFI sources are vertically polarized.
http://www.ebay.com/itm/PL259-UHF-male-1-2-for-Corrugated-copper-Standard-Andrew-Heliax-connector-QW-/321943672180?hash=item4af5569574:g:wKwAAOSw9uFW9Pfh -- Original Message -- Check out Chinarf on e
Hi Paul, Please share with us the growing evidence that the next Sunspot Minimum may well herald the start of a Maunder Minimum. Thanks 73 Frank W3LPL -- Original Message -- From: "g4hds" <g4hds@rona
Hi Kevin, Please share with us how you're begun to think that Cycle 24 will be looked at as the beginning of a new Maunder Minimum. Thanks 73 Frank W3LPL -- Original Message -- From: "Kevin Stover" <
Hi Kip, Your question involves perhaps the most frequently misunderstood aspect of FT-1000MP receiver operation, a result of the poorly written description of Menu 8-4 on page 91 of the operating man
Reply to: alanbh@cablespeed.com 160 Meter Three Element Short Vertical Receiving Array. by WA3EKL I recently designed and built a three element triangular short vertical array for 160. At the encoura
Hi Mark, The sloping radials you're proposing to use also have the affect of shortening the effective length of your vertical, just as if you had raised the feed point. 73 Frank W3LPL -- Original Mes
Hi Grant, Regarding your comment about the isolation transformer properties of a transformer wound on a binocular core (or on a toroidal core), their common mode choking performance is very inferior
Hi Herb, Have you considered purchasing a TDR rather than a quad-copter? I use a TDR to inspect my Beverages and other antennas from the comfort of my shack, day and night. 73 Frank W3LPL -- Original
Hi Mike, An inverted-L with 50-60 feet vertical is a far superior choice than a bottom loaded vertical. Its much more efficient, its bandwidth is much broader and you don't have to deal with the very
Hi Gary, Salts are a terrible ground enhancement because it can damage your ground system, cause environmental damage and it requires frequent replenishment as its washed away. Radials or chicken wir
Early this month it was my pleasure to be interviewed by Eric, Eric, 4Z1UG. Eric has interviewed more than a hundred well known active hams and made them available on his web site. You will also find
A very important caution about the performance of T-verticals vs. Inverted-L verticals. If the performance of your 40 meter antennas is important to you and your T-vertical is within 300 feet of your
Hi Steve, Poor performing ground systems affect directive receiving antenna performance in three fundamental ways: - degrading the feed point VSWR - by degrading feed efficiency which can upset the p
Comments. especially compared to the other popular K3 narrow bandwidth filters? Thanks 73 Frank W3LPL _________________ Topband Reflector Archives - http://www.contesting.com/_topband
Hi Price, You shouldn't be surprised that every experienced topband DXer will view your claim of a 2100Z topband long path QSO with ZL3GQ with extreme pessimism. At 2100Z its three hours after sunris
Hi Kris, There's no substitute for butt in chair time if you want to work grey line long path DX on 80 meters. 160 meters is also possible, but much more difficult. Just check your local sunrise/suns