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Wow mudduck! Here in Brisbane AU heard nothing but static on 11m for months now!.
With conditions continuing to decline for the next 4 or 5 years I agree you would be better off saving your money and getting a HF rig.
Seems to be some confusion between whats fog lights and driving lights.
I know the vernacular and laws are different here.Fog lights are pointed low and are low range lights they can be used anytime day or night and present no problem .
I have also noticed an increase in fog lights fitted...
I dont use smith charts, but only because I have to print them out extra large so I read them these days.
Just did a search looking for a youtube vid for 309 found several with Hams doing SWR sweeps and taking about Resonance at lowest swr points on Dipoles with no mention of "X". Unbelievable !!
Agree with you Db but it's all a bit much for a newbie. We most likely confused 309 more Tried to keep it simple .
One thing I will add though is the closer X is to 0 the less it will vary with coax length.The more reactive it is to start with the higher the variation.
OK..That's because that's not the whole story. The 40 ohms is impedance not resistance .We need the other figure your not using.The X or J depending on the brand and type of meter shows us how reactive the antenna is .
Or how far off resonance it is. Higher the figure the further out of tune...
Easy enough to make the 75 Ohm transformer .just remember that the length is 1/4 wave x velocity factor . It will be around 72 to 78 inches depending on type of cable you use. I use a GDO or analyzer to find the length, but as long as you can find the VF, measurements are close enough (nearest...
Definitely needs the transformer.( it's about 120 ohm feedpoint impedance) Unless you make it a rectangle and feed it on the short side( then it's 50 ohm). Also you get a little bit more gain with the rectangle.
Original Gainmaster is a center fed 5/8th dipole . impedance is about 200 ohms.
The shorted matching stub is carrying enough current to get warm to the touch with 200w . On my homebrew copies I use RG213 for the stub and cap .They can handle a lot more power.
Bit hard to tell from this video but the joint seems to be just a piece of circuit board with no matching or cap. So it's just a T2LT/Coax Dipole in fancy packaging.Dont get me wrong nothing wrong with that. And it should handle what ever power the coax is rated at
Thxs Marconi,great reports as always. The reports show a much clearer picture and as you said really only a slight difference .
My questions are only driven by my curiosity and my wish to understand what and how you where testing.
I know how hard it can be to get direct comparisons and...
Interesting comparison.At first glance the top one looks a whole lot better. What is the topography like were you are ?.
Also wondering did you ever try swapping the mounting positions to confirm results and void any differences in location and cable runs.. And also have you tried both antenna...
Congrats on the licence.
Is the aircon on your unit, will that be your entrance point ?
Looking at the pics you posted you have plenty of options.
Start looking for wire .,insulated house hold electrical wire can work well or household earth wire. Enameled copper wire becomes almost...
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