Thanks everyone! I’ve order some Wireman 26 GA for the top hat wires and should be all set.
Much appreciated everyone!!! 73 es DX, Bob/AA6VB Robert L. Chortek > On Apr 11, 2021, at 6:46 AM, [email protected] wrote: > > [External Email] > > Aha, Joe is right! > Sorry, I assumed Low Band. > Sometimes it helps when one can READ! ☹ > > NO PROBLEM: > https://www.dj0ip.de/vertical-antennas/80m-on-12m-pole/ > Here you will find the typical lengths for 80m. > Of course lengths vary slightly from one QTH to the next. > The Top-Hat wires are about 20 ft. long. Same rules. Use thin wire for the > top-hats. > > 73 - Rick, DJ0IP > (Nr. Frankfurt, Germany) > May the Sunspots be with Us! > > -----Original Message----- > From: Topband <[email protected]> On Behalf Of Joe > Subich, W4TV > Sent: 11 April 2021 14:36 > To: [email protected] > Subject: Re: Topband: 43’ 80 Meter Vertical > >> On 2021-04-11 5:25 AM, [email protected] wrote: >> Let's put this in perspective: for the short pole Bob is using, the >> top-hat wires are going to be in the neighborhood of 100 ft. long. >> So we do need a lot of space for this. > > That is for 160 meters. Bob is building for 80 meters (3545 KHz) so use the > info here: > <https://www.dj0ip.de/vertical-antennas/80m-on-12m-pole/> > > 73, > > ... Joe, W4TV > > >> On 2021-04-11 5:25 AM, [email protected] wrote: >> I agree with Rick; its better to use 4 top-hat wires. >> >> On my Vertical Antenna page, I originally showed plans for verticals with 2, >> 3, and 4 top-hat wires. >> I now only show the 4-wire version, except for the Inv.-L. >> >> Let's put this in perspective: for the short pole Bob is using, the top-hat >> wires are going to be in the neighborhood of 100 ft. long. >> So we do need a lot of space for this. >> >> The more top-hat wires, the shorter they need be. >> But try to keep them equally spaced around the pole and at equal heights. >> >> And, if space is an issue, the only solution is a longer pole. >> For instance, with the 60 ft. Spiderpole, the 4 top-hat wires are only about >> 82 ft. long. >> And with the 85 ft. Spiderpole, the wires are about 23 ft. long. (If not >> for darn HOA's . . . ) >> >> With these longer poles, the top-hat wires should not exit from the top; >> these poles are too thin. >> Drop down one segment and connect the top-hat wires there. >> >> 73 - Rick, DJ0IP >> (Nr. Frankfurt, Germany) >> May the Sunspots be with Us! >> >> -----Original Message----- >> From: Topband <[email protected]> On Behalf >> Of Richard (Rick) Karlquist >> Sent: 11 April 2021 00:35 >> To: Chortek, Robert L. <[email protected]>; TopBand List >> <[email protected]> >> Subject: Re: Topband: 43’ 80 Meter Vertical >> >> >>> On 4/10/2021 1:16 PM, Chortek, Robert L. wrote: >>> Hoping to get some guidance from the antenna gurus here. >>> >>> >>> Can someone tell me if I added two top hat wires 16 GA THHN sloping at 45 >>> degrees “about” how long they would need to be to resonate at 3.545 MHZ. >>> >>> Bob/AA6VB >>> Robert L. Chortek >> >> After SWR, the most overrated goal for ham radio antennas is resonance. You >> should use the amount of top loading that maximizes the radiation >> resistance. Then put an appropriate reactance in series with the antenna to >> provide a resistive load to the transmitter at 3545. The reactance may be >> turn out to be inductive or capacitive. You will also want to make the >> series reactance variable somehow unless you only ever want to operate on >> 3545. >> >> You would also be advised to use 4 top loading wires instead of just >> two. There is a substantial advantage for 4 vs 2. Beyond >> 4 top wires (say 8) the benefits aren't worth the trouble. >> This is explained by the fact that 4 is the maximum number of top wires that >> don't couple to each other. >> >> It is also advantageous to pull out the top loading wires to a more gentle >> slope if you can. >> >> You can use bare aluminum electric fence wire to reduce weight and wind >> loading on the vertical. >> >> >> 73 >> Rick N6RK >> _________________ >> Searchable Archives: http://www.contesting.com/_topband - Topband >> Reflector >> >> _________________ >> Searchable Archives: http://www.contesting.com/_topband - Topband >> Reflector >> > _________________ > Searchable Archives: http://www.contesting.com/_topband - Topband Reflector > > _________________ > Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
