From my own exhaustive research and many lab experiments with HV corona discharge, it seems to me that at least some of this could be eliminated by either: 1. Eliminating all the sharp points 2. Prop
The T Match tuner is what sits in the house Price. The T Match feed on the antenna is completely different, is grounded to the boom on the all metal design and is no more prone to P-static than any o
On 11/17/2012 9:12 AM, Bill Conwell (home) wrote: I've seen articles that studied the optimum number of turns for air-core chokes, but don't recall seeing any for toroidal chokes. Can anyone offer a
Also the difference between Mix 31 and 43 is not great and was used for decades successfully before 31 was introduced. For a non-critical application like this almost anything would work with enough
Um -- what did you say was the typical skin depth of soil at 2 MHz? Somehow, I seriously doubt it was down that far. :) Common mode suppression requirements depend on things: 1.) The sensitivity of t
As Ive mentioned here many times I started by removing noise sources around the house as well as at a few cooperative neighbors. That involved Mix 33 1/2" x 7.5" rods and 43, 75 and 77 mix 2.4" toroi
Ive often wondered about actual coupling Tim as compared to modeling. For decades Ive had an inverted vee midway between a pair of full size sloping verticals all on the same tower. The vee feedpoint
ON4UN states in his book that the wires for a 2 wire reversible beverage must be installed side by side, but also may be placed one above the other with satisfactory results. Did someone try this? Ho
** Ive noticed no difference in any weather using field phone wire which happens to be in wide use by many very competitive contesters and lowband DXers. With 5 2 wire reversibles here and 750' of 1/
So what does your car radio say to you set to a quiet spot at the top of the AM band? Have you eliminated your own property by killing all power and run the K3 on a battery? Carl KM1H yes it is, alth
Ive never had a quality UHF arc even with a 5:1 VSWR of either sign at 1200-1500W. Never tried an import. Carl KM1H -- Original Message -- From: "DAVID CUTHBERT" <telegrapher9@gmail.com> To: "John Ha
No, I didn't spill my beer. But I am having very good experience with the roughly 300 foot Beverage on Ground that I just put in at my house. It is fed through a 300 ohm transformer and runs in the o
Sounds like a problem many would love to have! When you say they work best at 1-3' how exactly do you mean and what are the antenna details? Getting more info on what others use is always good. Carl
-- Original Message -- From: "Tree" <tree@kkn.net> To: "Eddy Swynar" <deswynar@xplornet.ca> Cc: "TopBand List" <topband@contesting.com>; <herbs@vitelcom.net> Sent: Friday, November 30, 2012 9:32 AM S
In addition not all signals come via the direct Great Circle bearings for SP or LP, at least here in NH which is at a fairly high latitude. Having an extra direction or more such as over Africa for s
Mike, Im pretty sure a group buy would convince the manufacturer to sell them. Supposedly an Ebay seller has an "exclusive" but since our use is non competitive to his SWL and cave dweller ham custom
The same holds with loaded element yagis. Gain decreases due to RF losses but directivity is the same using the same boom length and number of elements as a full size version. Carl KM1H It does? http
Many thanks Dean, Carl, Mike, Joel and the rest of you who shared your opinions about "why so many", probably I missed the point that 3 or 4 db in directivity loss because of deeps is much more impor
resistors. Id guesstimate the general F/B to be over 20dB on 160. My feeling is that performance could not be duplicated by various other loading methods. If somebody wants to make real world compari
Having operated in Western and Central Europe a few times over the years on 160-40M from average to better stations Ive observed something else. With the typical 5-7 hour time difference the East Coa