Or, did he do this for bandwidth/matching reasons just as K3LR/W3LPL/etc do with their 4L40m? Remember also that a ~ 0.25 - 0.30w boom, per my old W2PV notes, can have a naturally higher F/B ... Just
Polyphaser RCT, an ICE unit, or a unit from Array-Solutions ... one unit at the base and one unit at the station wall ground. If you don't have a single point ground, now would be a GREAT time to bui
Hello again Tony, Look at the outer case ... The TOP should have ONE grounding post. (Let's call that at the 12 o'clock position) If so, then the RCVR input is at 9 o'clock and the ANTENNA is a 3 o'c
I recently did a R&R on my C31XR here, and here's the source I used for the smaller size U-bolts: MSC Part number for the 1.375" units is: http://www1.mscdirect.com/CGI/NNSRIT?PMAKA=76876119 7687611
John, Have you really looked at the wind load you are considering for this on Rohn 25G? The twisting motions at the top are going to be LARGE and well past what 25G is spec'd. That much wind load is
They were at Dayton this year, with lots of traffic at their booth watching them demo an actual unit. Looked to be very well made with quality SS hardware and such, they offer two different versions
Mal, last time I checked "full size" for 40m really was about 66 feet, so ... ah ... B-> While you can build your antennas any way you want to, most others have found that the use of a properly desig
In 1995 after a MAJOR strike(s) I faced the same question and from my research at the time I choose Polyphaser for their protection units, it was expensive, time consuming, but not a $ in damage or l
The modeling I have done, for the most part shows the towers does not impact the pattern, there are exceptions ... especially as to vertical arrays, or yagi elements too close to the tower itself. Wh
Give this link <may require login> on the W4RNL site and study where he describes the W6PU design ... http://www.cebik.com/content/a10/qex/tb4.pdf Hope this helps ... 73 de Billy, AA4NU _____________
You can use 3" copper strap buried in the ground to go from one point to the other, spaced away from the house and with a wide radius for any needed bends. I did that here with the telephone entry 30
Check your SWR on 10m, with the booms at 90 degrees to each other ... that's another "got ya" to watch for. Does grounding/opening the 40m coax make any difference as to the 20m SWR changes? 73 de Bi
Dink ... Email direct to you is not working. Reply below via TowerTalk ... 73/bc/NU Exactly my point ... as to making sure it IS the boom. I ran into this when I was doing the planning on adding 2x 6
In a word ... DON'T. Let him be the one to prove the 'wisdom' of this idea on HIS tower setup there. 73 de Billy, AA4NU --Original Message-- _______________________________________________ __________
The article was by Dave, then KX6DS, now K4TO: Short Antenna For 160 & 80 Meters (Sublette KX6DS), CQ 1986, Aug pg 32 Hope this helps! Merry Christmas to all, 73 de Billy, AA4NU --Original Message--
Something like this perhaps? http://www.qth.com/topten/abss.htm Hope it helps, 73 de Billy, AA4NU --Original Message-- _______________________________________________ ________________________________
I used a 3L with it's boom at 58' for roughly 6 1/2 years at a previous QTH. First, the durability ... never lost a spreader or a corner insulator, worked well. BTW, one of the 'secrets' is the inte
"Jack Louthan, N5KT, author of the Antenna Model software program distributed via Teri Software recently became a Silent Key (SK) this summer. Members of his family are now in the process of determin
Recently the sad news was posted concerning the passing of fellow ham and author of Antenna Model software, Jack Louthan, N5KT. The family is having a memorial service for Jack next Monday, November
For using HFTA, the required data seems reasonably easy to access within North America... but what about outside of North America? Any suggestions for our fellow hams in those areas as to websites or