Ok, let's not make this black and white, then. :-) It goes without saying that both halves of the antenna (radials and the vertical) must be present in order for the bottom-fed vertical monopole to r
Thanks, Tom. I should have stated that in the absence of radials, the coax will radiate instead due to the common mode current on the outside of the shield. That's a given. Let's forget that I said a
Nearly every time I have ever called CQ on top of a fishing beacon on 160 --except the very weakest ones-- it disappeared. I assumed they changed frequency. I don't think it was a coincidence. I've h
Thank you for that observation, but I don't think they're CW literate. :-) My point (which I didn't make clear) was that you don't have to have a lot of ERP to make the beacons QSY. I was just using
I don't remember how they work. There was quite a discussion about this hear about 3 years ago. I forget the details. 73, Mike www.w0btu.com _______________________________________________ UR RST IS
"The most effective way to get rid of one is to operate on, or very close to, the beacon frequency. It takes some period of time, but if the owner can't hear the beacon reliably he will program a new
IF they are operating there illegally, it would not be "malicious interference". It would be like intentionally calling CQ on top of a CBer on 10m. But you make some good points. 73, Mike www.w0btu.c
Tom is absolutely correct. I believe this eHam thread discusses the pertinent rules and regulations pertaining to us jamming of an illegal station on the ham bands: http://www.eham.net/ehamforum/smf/
This is a great idea. Apparently, this problem is going to get MUCH worse than it has ever been. This needs to be addressed ASAP so that we minimize the effect that this has on our enjoyment of 160.
I can't transmit on 160 right now, but I finally got my 2-wire Beverages repaired today and we're sure looking forward to listening! At least I think I got them fixed. (One was destroyed by a small t
Somewhere, G3TXQ stated that the values he calculated at http://www.karinya.net/g3txq/chokes/ were subject to stray capacitance. It doesn't take much to throw the values in his charts there way off.
Tom, Did you --or anyone else you are aware of-- ever A-B test a ~120' tower against a ~300' tower on 160? 73, Mike www.w0btu.com _______________________________________________ Topband reflector - t
I didn't remember W8LT's 5/8 wave balloon verticals. But I do recall your telling me about your neighbor's inverted-L nearly always being about the same strength as your old 120' tower in Ohio on 160
We know the radius of the earth and have a good idea of the takeoff angle from a given monopole height. The unknown variable (to me, anyway) is the approximate height of the reflecting layer in the i
Maybe I just abused/misused the term "takeoff angle" myself. :-) 73, Mike www.w0btu.com _______________________________________________ Topband reflector - topband@contesting.com
How strong of a signal can that enormous Yagi radiate into the USA on 160? I have never heard them. 73, Mike www.w0btu.com _______________________________________________ Topband reflector - topband@
Okay, it sounds like everyone agrees that a 5/8 wave monopole is bad for both AM BCB and 160m. But how about 1/2 wave monopoles, or monopoles between 90 and 180 degrees? Could they be useful at any d
Does anyone else have the constant carrier on 1820.0 at night? I've heard it for weeks, and it's interfered with several DX stations that I was trying to copy. And I see I'm not the only one. I just
It can be heard in Japan and Canada?! Where could it be coming from? 73, Mike www.w0btu.com _______________________________________________ Topband reflector - topband@contesting.com