There are 2 seperate issues here which may lead to confusion. 1. the fishnet beacons are not ham gear and are water bouys. 2. The fishing boat SSB communications often use ham gear which is cheaper t
Has anyone listened down around 452 KHz for a sick sounding NDB and up thru the BC band for its harmonics or something else? Carl KM1H Today the signal changed characteristics significantly. It is no
The experience here during the stations contest days of the 90's was with a high inverted V at 160-180' (added 20' to the tower after a lightning hit) along with a pair of 1/4 wave verticals with 32
15 and 60M and run comparisons for awhile. In areas where countries are tightly packed a dipole may be a good choice. Carl KM1H Hi it's an interesting discussion about the dipoles. I want to put up a
I believe the original query was about transmitting effectiveness which is where the 15M and 60M heights of the original poster were suggested. Carl KM1H RDF is the key point to improve signal noise,
One of the benefits of modifying a rig for full range TX is finding where the lowest VSWR occurs to get a starting point for cutting or adding. Carl KM1H I would rather guess you should short it by a
MFJ sells a filter for that but I dont know how well it works around serious BCB RF; 10KW at the high end of the band in 2 directions in about 7-8 miles doesnt bother my unfiltered 259B nor do the FM
There is no need to tension until its perflecty horizontal; I didnt even do that when running jacketed #12 Copperweld single wire Beverages. Ive had minimal trouble with military telephone wire with
What gets me is the one who has a fantastic antenna farm but still has to resort to a tube with handles when he doesnt get thru right away with the store bought amp. The signal increase is dramatic a
Thats twice the cost of the MFJ-1708 and for what benefit? It (either one) can also be built for a way lot less than that and if the DXE fails you dont even get a schematic so you can fix it. Yes I r
I cant find the button to convert that metric stuff to good old USA measurements when posted from this country(-: I never found a way to model an an antenna over anything but flat, level ground. Not
How do we know what it has with no schematic available? It could be $1-2 worth of parts. I recommend that nobody buy anything from DXE that does not support an at home repair. Carl KM1H By the way Bu
Is that at full power out or in standby? Carl KM1H Wonder if someone can help with a technical question with the amp I use on 160 meters. The Spec Sheet for the 8877 tube lists the "Absolute Maximum
The 5.5V is a ploy to get higher emission at the expense of operational life. It still has an 8877 filament. Eimac has been doing similar since WW2 with pulse versions of various tubes. Carl KM1H Bob
The only problem with pushing an 8877 or the 3CPX to or over the 4KV limit is that it enhances the chance of instability. Carl KM1H Bob, A non-issue. Many of us have been running 8877s with Ep of 4KV
Not that Ive noticed. I suspect most Americans are more comfortable with our own measuring system plus our ham bands where antenna formulas are still published in feet and inches. Carl KM1H CU on the
Ive made several contacts up to about 2500 miles (West from NH) running 100W into a single 750' #12 copperweld Beverage up about 8' using a FT114-43 autotransformer back in the 80's at a prior home.
As you have said it is difficult to get a A-B test unless instant switching or direct observation is available. The purpose of my test was to see if p-static was caused by individual charged particle
Tom, Thank you for your research and information. You have me convinced My much lower BOG Beverage has a better signal to noise than my taller Beverages in storm events. This aligns to your research