After all, what kind of antennas should we take? If you were what would be your choice?                                                                      With the low values of SFI and the difficulties in transportation, what do we deserve?

Condition: The transport will have to be in a Golf Bag, from that point we have several options:

• - Vertical antenna Force 12 XK40 10 to 40 Meters

• - Vertical antenna Sigma I Pro Traveler 10 to 40 Meters

• - Vertical antenna Antenna SQ9 10 to 80 Meters

• - DXWire and VDA 12 Meter Mast Antennas 10,12,15,17 and 20 Mts and Vertical Ground plane for 30, 40 and 80m Meters

• - Gustav Kelemen Dipoles 10 to 80 mts.

Why i bring new antennas? My first few years as a radio amateur  were filled with gaping voids on many aspects of the art. One of these voids was the understanding of antenna operation relativ e to the makeup  of the fields forming  the radiation pattern , and particularly the vertical angle radiation. Participation during many years on URE Union Radioaficionados Españoles Congress  bropuight me  a greater deph  of understanding  in this area.  From QSO's on the bands  it becomes  apparent that other  Hams are  plagued with  the same lack of understanding. I i is itewnded

True Ground is difficult to find without extensive research and specialized equipment not usually available to the average amateur. In order to circumvent this obstacle  of true ground location, let us assume in all subsequent calculations that true ground is in the surface of the earth, is a perfect conductor, and will reflect the radiated  signal totally, without loss of energy..ntennas are a very popular s probably spends the most time talking about, both on a

nd off the air , is his antenna system. There are at least two good reasons for this, First,  the antenna  themselves  are pretty simple, at least from the  standpoint of circuitry. They contain No transistors, capacitors , resistors, diodes or even vacuum tubes or any kind of difficult circuit difficult to understand.  Antennas are usually simply pieces of wire  or tubing with perhaps a transformer thrown in for impedance matching . Thus, they are at least easy to see. The second reason for the great deal of attention antennas get  is their performance . Every ham who has been around very long knows that there is no easier way to improve his station's capabilities than to improve his antenna. When a significant change for the better is made in the antenna, the improvement in the station's ability  to communicate is immediately apparent, on both transmission and reception. One thousand Euros ( the usual price of store bought kilowatt amplifier on these days) spent on an antenna installation will do worlds more good for amateur than will a similar amount spent on a big "pair of boots" .   Also, antennas are very popular because they are easier to homebrew than most pieces of equipment . and easier  to make operate properly after their construction. Thus, the antenna deserves it's popularity. And if this so, then the simple theory behind the antenna  deserves to be understood by all of us. So, the reason for this comment -  will discuss the very simple theory of antenna gain, efficiency, capture area and effective height. These are subjects  of which very few amateurs seem to have a good grasp today. Much is heard about antenna "gain" especially, but few seem to have exact understanding of what they are speaking about. Perhaps this comment will help to clear up a little of confusion.

An antenna can basically be thought of as advice converting energy from one form to another. When an electromagnetic wave strikes as antenna we find that electrical power is available at its terminals. On the other hand, when we apply electrical power to the terminals of the antenna , we find that electromagnetic field  (wave) is radiated by the antenna.

This property of working both "backward and forward" is called reciprocity and is characteristic of antennas

Most of us  realize that it is Electromagnetic field s or "waves" that provide invisible link between transmitting and receiving stations in radio communications system. But the fact is that no one, even the professionals, knows just what a electromagnetic field is.

Short vertical antennas are of interest to many amateurs, Every mobile whip antenna is short, much too short, at frequencies, 7, 3.5Mhz. Also, not everyone is blessed with sufficient clear space for erection of horizontal dipoles at those frequencies, For such amateurs, the short vertical is a solution which may be attractive , especially for use on 40 and 80mts. this is a discussion  for those who care to know something about how such antennas can work, and what their limitations are. Since this type of antenna is electrically short, something as to be done to lengthen it so that will resonate and take power from the transmitter. One of the simple ways of resonating a short antenna is by use of a series loading coils.

EQUIPMENT

This page contains links to equipments used by project members on this Amateur Radio Adventure, software programs and components developed by the project, and to other tools we've found useful and collected here for your convenience.

I will take my I PRO Traveller Antenna and Vertical Wire Dipoles (VDA).He suggested that while he'd squeeze me in somewhere if it became necessary, he also had a well-equipped suitcase portable station Kenwood TS480S with internal tuner, and ALINCO DM33OMVE power supply.  I've permission for the antennas which perhaps I could operate from the cogttage? I scoped out the resort and found the perfect spot to string up the G5RV from a 4th floor stairwell window over to a convenient tree in the courtyard and our 2nd floor balcony was exactly half way in between. I thought long and hard about how to ask about putting up the antenna. In the end I decided it sounded better to describe it as 'a wire aerial for my radio' instead of a 'hundred foot long ham radio antenna'. I shouldn't have worrried. The owner of the cottage specialized in catering to their guests needs and the best line I heard on the whole trip was 'Are you sure you wouldn't like us to have the maintenance workers put up your antenna for you?' Now that's service! With the license in hand (it's actually a very official looking 10-page document, printed and bound!) and the G5RV hung in the garden it was time to get on the air. I had never used an Icom IC-7000 before but I knew what I wanted to do so after an hour of flipping through the manual I had the mic gain, ALC and compression set up and programmed the voice memories. 

Every body know that if you prefer one Manufacteur Equipment you never change if you prefer Yaesu, ICOM, Kenwood , Ten-tec etc, . We are talking about OM with some years on experience , myself I never change from Kenwood, i've already operate under diferent conditions or with Yaesu or ICOM even with TEN-TEC and Drake. We can start here a discussion, but i've a costumate to listening good reception on my Kenwood s ,that's the reason

VIBROPLEX CW Paddle

  We Love CW, but we still a humbles CW Operators!

" beeleave me I'm trying to improve everyday, and maybe 10 years from now I could transmit and receive fast like some friends "Marq,CT1BWW

"I Can´t perform CW Pile-ups because I still have a hard hears." So if you can't hear us  on any Phone Frequencies  take a look on CW  but be pacience!  

The Vibroplex Iambic is the modern descendent of the Original. It incorporates the traditional Vibroplex look for use with modern electronic keyers. The code speed with the Iambic depends upon the particular electronic keyer with which it is operated. And, you get the same crisp operation at 5 words per minute as you do at 50+ wpm.

The Iambic paddle allows the user to benefit from the automatic dot/dash insertion of the modern keyer while maintaining the quality and tradition Vibroplex is noted for throughout the world. No other keyer does it with such effortless ease.

You may also obtain technical support by e-mail or telephone at VIBROPLEX; and by e-mail.

 ALINCO Power Suplly

The combination of high-quality space-saving components and high efficiency switching technology made it possible for the DM-330MV to be super-compact and easy to carry for portable operations , DXpeditions and Field-day and still generate a High 30A continuous output !                                                                                                                                                                                  Alinco's communication technology has created a patent-pending Noise-Offset circuit to eliminate the pulse-noise of the switching circuit for the customer who demands more.                                    Safety protections are also very important. The DM-330MV comes with short circuit protection, a current-limiting system (over 32A) and extreme-temperature protection.                                        The pre-set voltage function makes the DM-330MV even easier to use. Just store the most frequently used voltage in the memory, and it is constantly ready to go. And of course it is easily varied. Vast output terminal convenience is just one more benefit of the DM-330MV ! A cigar-plug socket (Max 10A), a set of Max 32A terminals, and 2 sets of snap-in terminals (Max 5A) are conveniently laid-out and offer numerous variations for its operation.                                                                                                                                                                                                                             A big, highly visible, back-lit Amp/V meter displays the status of the operation for added convenience.

You may also obtain technical support by e-mail or telephone at DIFONA; and by e-mail.