Are you saying that the Quad DE is NOT connected to a receiver? Your argument does not compute (at least not to me ) Tom N4KG ________________________________________________________________ Sign Up
Sounds like a good plan Tom. Is the BOOM strong enough to support the additional wind and weight load of the 30M elements? A 30M antenna interlaced inside a 40M beam 'should' have little or no effect
Sounds like a good plan Tom. Is the BOOM strong enough to support the additional wind and weight load of the 30M elements? A 30M antenna interlaced inside a 40M beam 'should' have little or no effect
Since you already "several C3's" why not just use them. They are pretty light... OR, you could modify one of them to make a C3S which has 3 reflectors, one each for 10, 15, and 20M and NO directors,
This VERY ISSUE was addressed recently on TowerTalk. It was STRONGLY recommended by myself and others to ALWAYS use a set of TEMPORARY SAFETY GUYS when removing an old tower. NEVER ASSUME the BASE is
I would recommend at least TWO Nicopress sleeves at each joint. Another N4KG "Neverism" - NEVER rely on ONE of *anything* where safety is concerned. Tom N4KG _________________________________________
What kind of 40M beam? My CC 402CD at 95 ft survived estimated 80-90 MPH winds from a mini-tornado that took out a couple of 75 year old hardwoods and dozens of 80 ft poplars and pines. I reinforced
What kind of tribander? Note that a 24 ft boom end loaded by 20M elements is self resonant around 7.5 MHz, making it look like a good 40M director to a dipole mounted parallel to the boom. My prefere
I am NOT a fan of house bracketing for several reasons: - Low support height - Tower vibration transfers to house as NOISE when wind blows - Possible damage to the house from strong winds As I have o
Doesn't this drawing for R45 also ASSUME an 8 sq ft side mount (for dish antennas)? IF that is the case, and you do NOT install the dish mount, you can add ~8 sq ft to the rated load for R45. And YES
I guyed an 80 ft TV tower at 4 levels and another 75 footer at 3 levels. I can't imagine guying 70 ft of R45 at 4 levels. Maybe 3 for a really strong installation, otherwise 2 levels should be adequa
Mark, I am also using a CC 402CD at 95 ft, about 300 ft behind my house, fed with 3/4 inch CATV hardline. I use a Drake MN2000 to tune on SSB. Try adding some coax to find a 'better' impedance range
You mean you did NOT put a short 'safety' section (20-25 ft) of 1/4 inch EHS in your guys to reduce vandalism and fire susceptibility? Tom N4KG _______________________________________________________
Basically, Stan's approach is to TAKE DOWN the tower and reinstall it. Here are two alternative approaches: N4AR discovered his 200 ft R45 tower with a 4 high stack of 4L20's had rotated at the base
I use a CLOVE HITCH (or two) to connect my TRAM Line to my mast, allowing the tram pulley to come right up to the mast. The end of the line can be looped back to the active part of the tram line as a
And what do you see as the problem? The Legs are NOT rusted above the break at ground level, The Legs are braced so they cannot move out or in, The space between ground and the next steps is filled w
Rohn recommends that the anchors be 80% of the tower height. SHORT towers can be guyed closer in (like 30 ft for 48 to 68 ft tiltovers illustrated in older Rohn catalgos). The mathematical formula is
Lifting a guyed tower "a few inches" is MUCH more difficult than it sounds. W1EVT told me he did this to one of his 140 ft R25 towers (supporting only WIRE antennas) and they had to loosen the guys t
Ground Reflections from Horizontally Polarized antennas are very efficient, suffering only 1 to 2 dB loss regardless of how poor the conductivity of the ground. Ground Reflections from Vertically Pol
Based on what? Is the 5BTV Base Loaded or trapped? (Base loading is the LEAST efficient method) N4KG GAP antennas SUCK on the Lowest Band of operation where they are centerloaded by a transformed cap