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|Antenna Modeling for Beginners||Feb 8th, 18:19||3||709||on 14/2/13|
|Roller Inductor Tuner||Dec 20th 2011, 19:26||1||732||on 20/12/11|
|Using Ladder Line||Jul 27th 2011, 19:43||3||1,449||on 29/7/11|
|Antenna Modeling for Beginners||WA0CBW||on 14/2/13|
Thanks for the help. The product notes for the book were most helpful. Once I got beyond entering the "connection dialog" it was smooth sailing, uh modeling. I will be purchasing a full version of the software in the near future. Again, thanks for the help.
|Antenna Modeling for Beginners||WA0CBW||on 8/2/13|
|I thought I would try my hand at antenna modeling and the ARRL "Antenna Modeling for Beginners" book looked like the place to start. I got as far as page 2-7 where my learning came to a halt. The second exercise on page 2-6 describes adding a second length of wire (segment) to to the first. The first paragraph on page 2-7 indicates to "connect End 1 of the new wire 2 to End 2 of the existing dipole wire by entering "W2E1" in the End 1 Cell for Wire 2 and tabbing to the Y cell." Figure 2.5 shows it entered in the "Conn" column. That column won't allow be to enter anything. So where do I enter "W2E1"?
|FT-747 stuck transmitting in CW mode||KN6HF||on 17/1/13|
|Is it really transmitting or is it just muting the receiver?
|Reference Works Suggestions Wanted. Please!!||KD4RDS||on 6/10/12|
Good luck with your study for the Extra class license. What you are looking for will be hard to find. I haven't seen any books that can fill you in on years of experience. Any of the books you pick up will help to fill in the gaps. The ARRL study guide (not the question pool book) is very good in explaining the theory behind each question. The Extra class license is like the journeyman exam for an electrician or an electronics technician. Most journeyman tests require several years of experience before you can attempt to take the test. The competencies tested on the Extra test include things that you might not learn unless you have had several years of "hands-on-experience" in ham radio and electronics. There just isn't any "one" book that I know of that includes all of these things. I would suggest that the ARRL books, QST and QEX are excellent sources of information. Text books by Shrader, Kinley and Frenzel can provide you with the necessary electronic theory. And finally find an Elmer. He can provide you with those "years of experience" that you are looking for.
|Inside antenna and grounding||dksac2||on 25/7/12|
In most instances no additional grounding would be necessary for an inside antenna. I'm not clear on your use of ladder line for GMRS frequencies. GMRS frequencies would be in the 460 Mhz range. I would guess the radio would be an amateur UHF or possibly commercial UHF radio that would commonly have an SO239 antenna connector on the back of the radio. What are you using to adapt the ladder line to the SO239 connector on the radio?
A lightning surge to your homes electrical system can cause damage to any device that is "plugged in". Many people install surge suppressor devices to protect their equipment. In some areas the Power Company offers to install these devices to your electrical system for a small monthly fee. Connecting an indoor antenna to your radio does not increase (or decrease) the possibility of a surge to your electrical system.
ARRL Technical Coordinator - Kansas Section