Jorge, Last weekend Carlos (N4IS) and I tested a two element parasitic array. The fed elment was an inverted L, with an 18 meter vertical section and a 22 m long sloping wire. The element was fed vi
G'day Topbanders, Potential good news! I have just found a lost Fishing Beacon (out on the very northern part of the Great Barrier Reef, in norther VK4). This unit appears to be a new type: it contai
Kees, That was the original design for this antenna: two rectangular loops with the cross wire phasing. Indeed, this configuration is better than the double delta loops. We did not have the necessary
Hi Topbanders, Does anybody knwo what transistors were used the in Transworld Telecommunications TW500 amplifier? TKS, George, AA7JV _______________________________________________ UR RST IS ... ...
I believe that Tree is suggesting to spot without posting the RX FRQ, i.e. without adding "UP 1" or such. I believe that on Top Band that could be useful as it could reduce the number of "Can't hear,
I have a 50 kW BC station on 1530 kHz about 1.6 miles from my QTH, with mostly salt water between us. The signal level on my 90 foot Vertical is over 20 dBm. When you touch a wire to the feedpoint y
Yes! I have tried it and it works well enough. When using well constructed transformers, there is very little common mode noise transmission. Impedance is 100 ohms. Loss is about 1.2 dB per 100 feet
Good'day TopBanders, My K3 did well during both nights. I had a strong FL station who decided to settle 170 Hz above my CQ frequency (170 Hz, for Christ's sake!) and all I heard was some clicks (and
DX conditions towards Europe were fine in South Florida last night. I have made 20 EU contacts, mostly from Eastern Europe. Signals were between S4 and S8 (UA3ZJG). Almost all the stations were bette
Tree, I believe that there is no simple answer to your well timed question. Yes, I am one those who believe that conditions have not been very good, especially in December. On the other hand, I also
G'Day TopBanders, Poor conditions have been the subject of a number of recent postings. Conditions may have been relatively poor for most us, but Carlos, N4IS, has been enjoying remarkable success du
Bob, It all depends on how good your ground system is. If it is perfect (not really possible unless you are over salt water) the difference between a high Q coil and top loading (assymetrical or not)
There was plenty of activity on TB last night (Thursday night). DF2PY was a solid S9 in South Florida. There were many other EU stations with solid S8 and S7 signals. QSB was very deep but noise was
Contests are indeed a good way to learn how to handle high traffic. Another tool, that many new DXpeditioners forget to use in the heat of the moment, is to spread out the pile-up. There will always
Not over yet for sure. Last night I worked OK1TN with 5W(QRP) from Florida with no difficulty. It was like an 40m QSO. The band was great! March/Apr are great times on 160! 73 and Good DX-ing, George
I have successfully used "tape" made by flattenning the braid of RG8 type coax. It is easy to work with, can carry plenty of current and does not have the sharp edges of the real copper tape. I varni
Mike, Here is the definite answer: it depends. I have built a number of Beverages near the sea, with varying results. On VK9WWI (Willis Islets) the Beverage ran parallel about 100 yards from the shor
Robin, Our experiences match closely. One key point I tried to make was that whether a Beverage will be good or not depends on its distance from the sea water. Not only its lateral distance but also
Yuri, Regarding the current in a loading coil, of course you are correct. A inductor inserted into a vertical will have higher voltage (ref to GND) on its "upper" end. If the current remainded the sa
Gentlemen, I have a 31 meter tall bottom fed vertical in Florida that is located right on the edge of the water. It gets hit two or three times a year (not always directly). I used to suffer serious