David, I would build your dipole so that it's resonant point is about 50-70KHz below where you want the array to be and use a Comtek Hybred Coupler to handle the concerns you have on the SWR by dumpi
Tom, I used the T6 for 5 years and a stack of T6's for two years. I could have put up anything on my Wyoming ranch but found the log periodic to have distinct advantages for contesting over longer bo
Jerry, What you need to realize is that using an Inverted L, the more radials you add, the less ground loss you incur which in-turn, shows the true impedance mismatch you have going on between the an
Gee wiz Rob, Have you ever tried an UNUN? I just love getting blasted by those who teachI've actually used what I suggested and guess what, it worked- There is so much "in your face" talk any more on
I would you suggest you look into Gull Wing radials................I know for 80M, the post height was suggested at apprx. 10 feet, I assume for 160M, you would be ok with 20 foot post coming off the
My Inv L was 124 feet and resonant at 1.825MHz going 70 feet up the Rohn 25 tower and pulled out over 250 feet using nylon rope.......................Good idea to start longer! I used the UNUN to mat
In my experience in building 4SQR array's, the F/B sounds ok, but you might want to check with W0AH who has built a very solid performing 80M 2Element array. I often found that the F/B would vary wit
I am going to phase a pair of 4080V verticals by Cushcraft using the W9AD multiband phase system sold by WX0B. But before I install the phased system, I am trying to figure something out about the si
I have no idea why I didn't test things at the antenna but chalk it up to new born twins.... Here are the 80M results: 3.770Mhz 3.789MHz 3.826Mhz 42 ohm impedance 42 ohm impedance 55 ohm impedance 2:
6.972Mhz with radials at resonance with radials, not 9.972Mhz...typo _______________________________________________ See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather Sta
I'm trying to figure out how well my radial system is performing with test down at antenna feed point: Radials detached: Resonant point w/ 1.6 SWR, 80 ohms impedance, 40Khz bandwidth at 2:1 SWR bell
The reason I didn't mention the antenna is because I already did last week. Sorry. It is the Cushcraft 4080V and is a 1/4 wave length on 80M. The responses make sense except for one thing. No one yet
Jim, Thank you for your suggestions. Others have sent me emails agreeing with you. Within what distance would you suggest to measure field strength? What protocol? I would think cranking down the rig
RE: 80M 1/4 vertical Depends if you get serious icing in your area. If so, go to the last line of this posting. If not, I'd suggest top loading a homemade 1/4 wave vertical for 80M. It is a compromis
K7PUC, Alfred, Call MFJ. I used their 259 analyzer which is an excellent product. Why don't you go buy one and a 4080V antenna and let us all know what you get versus your method of measuring impedan
Tennadyne T-6 Log periodic. Think outside the box. If that's too big, the Cushcraft MA5B. The T-6 is awesome, but if size and weight is a key issue, the MA5B is nice. It has suited me very well in my
What about an Inverted L antenna off the tower using a yard arm and pully? if your are just using it for spotting. Multiband transmitting would be another story on the Inv.L. The Hustler 5 BTV is gre
Howard, I hear Comet has a new vertical out I read in a recent CQ magazine designed for a mast installation. The artical is very detailed. After reading it, I would not buy one but it is a good write
I was not sure how folded radials would work in my small backyard while installing my radial system for my W9AD vertical multiband phase system. On antenna one, I had 20 radials working well that wer
A bit off the subject of tower talk, but hoping someone here would know...for those of us liking our headphones without the heavy boom mics, is their a decent shirt clip or necktie mic out there? I g