Re: Topband: Length of Beverages

2014-07-28 Thread Guy Olinger K2AV
o longer cadmium plated. > > Carl > KM1H > > > > - Original Message - From: "Mike Waters" > To: "topband" > Sent: Monday, July 28, 2014 12:42 PM > > Subject: Re: Topband: Length of Beverages > > >> Hi Jim, >>

Re: Topband: Length of Beverages

2014-07-28 Thread Carl
t was after they were no longer cadmium plated. Carl KM1H - Original Message - From: "Mike Waters" To: "topband" Sent: Monday, July 28, 2014 12:42 PM Subject: Re: Topband: Length of Beverages Hi Jim, As we move the turns closer, we increase the velocity fa

Re: Topband: Length of Beverages

2014-07-28 Thread Mike Waters
Hi Jim, As we move the turns closer, we increase the velocity factor too much. At some point, the Slinky will receive off the opposite (feed) end. Tom explains it at www.w8ji.com/slinky_and_loaded_beverages.htm . And I just found this, where K5UO seems to say that his Slinky was about 12 turns pe

Re: Topband: Length of Beverages

2014-07-28 Thread Mike Waters
the rope, past the point where it fires backwards (and then some), maybe. Using your idea I wonder if a pair could be wound bifilar and used as > switched bidirectional? > Why not? 73, Mike www.w0btu.com > - Original Message - From: Mike Waters > Subject: Re: Topband

Re: Topband: Length of Beverages

2014-07-28 Thread Carl
t;Richard (Rick) Karlquist" Cc: "Mike Waters" ; Sent: Sunday, July 27, 2014 8:43 AM Subject: Re: Topband: Length of Beverages It makes difference on "regular" ground. Once I put up "killer" 1200 ft Beverages on a location on the top of the hill, with slightly

Re: Topband: Length of Beverages

2014-07-28 Thread Yuri Blanarovich
It makes difference on "regular" ground. Once I put up "killer" 1200 ft Beverages on a location on the top of the hill, with slightly sloping ground around. First night in the contest Inv Vee was beating them. Sloping terrain and long wires were likely producing low angles, way too low for prop

Re: Topband: Length of Beverages

2014-07-28 Thread Yuri Blanarovich
It makes difference on "regular" ground.  Once I put up "killer" 1200 ft Beverages on a location on the top of the hill, with slightly sloping ground around. First night in the contest Inv Vee was beating them. Sloping terrain and long wires were likely producing low angles, way too low for pr

Re: Topband: Length of Beverages

2014-07-27 Thread Carl
To: topband Cc: Carl Sent: Sunday, July 27, 2014 9:44 AM Subject: Re: Topband: Length of Beverages If I every put up a Slinky-style Beverage, I'm probably going to try #12 TW solid insulated copper wire. Probably will close-wind it on a ~4" diameter fixture made from PVC pipe, and then

Re: Topband: length of Beverages

2014-07-27 Thread Don Johnson
The best thing I ever did for Topband receiving was to lay out a 220 foot wire on the ground pointed NE to Europe. I then put one down for 480 feet due West. Switching from one to the other was dramatic. Because I could just hear stations to the south but not copy them I put up a short conventio

Re: Topband: Length of Beverages

2014-07-27 Thread Mike Waters
If I every put up a Slinky-style Beverage, I'm probably going to try #12 TW solid insulated copper wire. Probably will close-wind it on a ~4" diameter fixture made from PVC pipe, and then stretch it out along its rope support. Any ballpark idea what the pitch should be? 73, Mike www.w0btu.com O

Re: Topband: Length of Beverages

2014-07-27 Thread Carl
Message - From: "Richard (Rick) Karlquist" To: "Mike Waters" ; "topband" Sent: Saturday, July 26, 2014 11:13 PM Subject: Re: Topband: Length of Beverages On 7/26/2014 2:32 PM, Mike Waters wrote: On my bucket list is a system for remotely changing the

Re: Topband: Length of Beverages

2014-07-26 Thread Richard (Rick) Karlquist
On 7/26/2014 2:32 PM, Mike Waters wrote: On my bucket list is a system for remotely changing the lengths of my two 2-wire Beverages between 580 and ~800 feet long. I actually tried this and discovered that any wire beyond 400 feet made no difference whatsoever. This is because I am on hig

Re: Topband: Length of Beverages

2014-07-26 Thread Mike Waters
On Sat, Jul 26, 2014 at 10:39 AM, wrote: > Longer Beverages provide narrower beamwidth, which reduces QRM or QRN that > would be received through the main lobe of a shorter Beverage > On my bucket list is a system for remotely changing the lengths of my two 2-wire Beverages between 580 and ~800

Re: Topband: Length of Beverages

2014-07-26 Thread donovanf
ire laid on the ground could be used as an alternative. 73 Frank W3LPL - Original Message - From: "Cqtestk4xs--- via Topband" To: topband@contesting.com Sent: Saturday, July 26, 2014 3:31:41 PM Subject: Topband: Length of Beverages I'm planning on putting up some

Re: Topband: Length of Beverages

2014-07-26 Thread donovanf
crashes. You can never have too many antennas... 73 Frank W3LPL - Original Message - From: "Cqtestk4xs--- via Topband" To: topband@contesting.com Sent: Saturday, July 26, 2014 3:31:41 PM Subject: Topband: Length of Beverages I'm planning on putting up some Be

Re: Topband: Length of Beverages

2014-07-26 Thread Larry
I'm sure it varies a lot from QTH to QTH, but here, over mostly volcanic ash and sand, I could see significant difference between 800 foot and 1100 foot. I never got around to trying longer than 1100 because I could not work all that I could hear with those. These days, being older and slowe

Topband: Length of Beverages

2014-07-26 Thread Cqtestk4xs--- via Topband
I'm planning on putting up some Beverages for the fall season...primarily for use on 160. Unfortunately, they have to be taken down again in the Spring for crops. The good news is they can be any length up to around 1200-1300 feet. Many have said that around 880 ft is the "sweet spot". I