Hello Roger, I hadn't thought of the loading coil that way (never too old to learn ...). It sounds interesting to me as my loading coil consists of 3 parts : - a 2.5mH coil at the top of the vertical
<< I appreciate that some readers may not be au fait with vector potential and perhaps its fundamental role deserves to be lightly aired in the amateur radio journals. >> I would have to agree. Very,
I have just read some recent correspondence on this net concerning the pros and cons of placing the antenna loading coil in the shack or at the base of the vertical aerial wire. The loading coil is n
Hi Dave Sorry to hear about your misfortune and I hope you get it all going again soon. The correct place for antenna loading coils are directly beneath the vertical drop wire of the vertical if it i
NEVER put your loading coil in a metal box, it totally destroys the efficiency. Consider it as part of the antenna from the radiation point of view. You have never seen a loading coil on a Mobile enc
Hello LF Group Many thanks for all comments and advice - most interesting. I drilled out the wooden dowels on the loading coil and replaced them with lengths of 15 mm plastic water pipe. I was unable
== Message date : Nov 17 2004, 09:20 AM From : "OSBORN, Chris" <[email protected]> To : "LF Group (E-mail)" <[email protected]> Copy to : Subject : LF: Loading Coils Hello LF G
Hello Chris, With this new arrangement I obtained my personal best Q of about 250.. Placing the new coil in the aerial circuit made a slight improvement to the aerial current - from about 1.2 A to 1.
Hi Chris, The loss in the loading coil rarely exceeds 10 .. 20 Ohm, unless Q is very low. Other losses (ground, greenery, buildings) are typical 50 .. 100 Ohm, unless you live close to the sea So onc
Its not just young electronics engineers who know nothing about inductors. I work with a number of middle aged ones (well, 30 - 50 anyway) who also know next to nothing about inductors, wire antennas
Sounds good Chris. The other tip I should have included is putting small samples of such plastics material (together with half a cup of water) in the microwave oven for a short while as a guide to de
Hi Chris, Put up an Ashlock loop and forget about losses with trees or wires or coils or houses or rain or snow or people or animals or anything else. Just ask Laurence how well they work or maybe Ma
WE0H Mike schrieb: Hi Chris, Put up an Ashlock loop and forget about losses with trees or wires or coils or houses or rain or snow or people or animals or anything else. Just ask Laurence how well th
Dear Andy, LF Group, Its not just young electronics engineers who know nothing about inductors. I work with a number of middle aged ones (well, 30 - 50 anyway) who also know next to nothing about ind
I was working on a Cisco router yesterday and found a bad surface mount ferrite. I asked the other guy in my department if he could look on a parts board for a ferrite bead and he returned later to s
I must confess that after all these years i do find that my calculator with all the built-in formulae (ohms law included) has made me lazy but maybe the skill is in knowing what to calculate and when
Yes, you have to know what buttons to push to get the right answer. The calculator just helps you to not make as many mistakes if any at all. Mike WE0H I must confess that after all these years i do
When it comes to calculations, the most useful ability is not to be able to caculate it exactly, caculator or no, but to quickly be able to estimate a ball park answer or approximation. Who needs to
The slide rule generation all did it to place the decimal correctly? Brian CT1DRP At 08:13 19/11/2004, you wrote: When it comes to calculations, the most useful ability is not to be able to caculate
That's a problem with calculating without understand what is calculated, often they just put in a number of figures in a formula and just accept whatever comes out even if it is absurd : In the few m
