I'd prefer old school,:-) 73 Mirko,S57AD --Original Message-- From: towertalk-bounces@contesting.com [mailto:towertalk-bounces@contesting.com] On Behalf Of D. Scott MacKenzie Sent: Thursday, June 15,
Just month or so ago, group of well organised group of gipsies (copper thiefs by "profession") some 15 miles south of my QTH pulled 1000' of HV cable under full load (10 kV), using tractor and chain.
In my youth,I was told not to solder wire antenna ends. The reason: copper contains some amount of SiO2, which crystalise under the heat and copper become fragile (breakable) at soldered points. In m
Hi Charles, I think that your choice (OptiBeam OB12-4) is excellent, as saw I in our club it is well designed and well made. In despite we too have severe winds at Adriatic Sea coast with gusts up to
Yes, I meant Array Solution freestanding verticals, but screwed up my memory :-( 73 Mirko,S57AD Mike Fatchett pravi: _______________________________________________ __________________________________
As for lightning protection, you can use static bleed chokes from radiator (vertical) to ground. That would provide DC path to ground your antenna. Such a chokes areavailable at Array Solutions, or y
EL34GUY@aol.com pravi: How do you climb it? Install climbing steps. Mirko, S57AD _______________________________________________ _______________________________________________ TowerTalk mailing list
I'm falling in love with Maine! 73 Mirko, S57AD Craig Clark pravi: _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@con
As for me, I don't feel any fear of height, (or pucker factor or what correct diagnisis is), as long as at least one of my foot touches the ground. 73 Mirko, S57AD Richards pravi: ___________________
How to shunt fed it for top band usage? WA6RKN pravi: _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com h
You meant Luso towers (www.luso.us)? 73 Mirko, S57AD David J Windisch pravi: _______________________________________________ _______________________________________________ TowerTalk mailing list Tow
Well, how about approach, emtioned even in ON4UN's book - make vertical resonant in CW part of band, short it with series capacitor to be resonant in SSB portion of the band. Relay, switching in shor
I'm affraid that quarterwave 75 Ohm impedance transformer is excellent approach for dipole(s) and/or single vertical, but quite useless for broadening bandwith of 4 square array. 73 Mirko, S57AD Pete
there is missing letter Z in the link, it should be http://www.qrz.com/db/p40a 73 Mirko, S57AD hanslg@aol.com pravi: _______________________________________________ __________________________________
Even better solution - put variable capacitor at the base of antenna to shorten it electrically for 30m band, and add a relay to shorten capacitor when antenna is used on 40m band! After you find the
Vertically polarized antennas are used at lower frequencies where you would need very high, huge masts for supporting horizontally polarised antennas. Most of ShortWave antennas (commercial services)
I didn't purchase anything yet from DXE, but I love their web site and excellent, very detailed manuals there. 73 Mirko, S57AD Jorge Diez - CX6VM pravi: ______________________________________________
In water-supply company where I worked, plumbers used divining rod regularly. I tried it and it does work, not just for water pipes but also for power cables, etc... It works as well for big rotten t
Some 40 years ago I've been in almost same situation, dwelling in huge mansion building with attic 50' * 33' (15m * 10m). I simply made bent dipole around the attic (nailed dipole wire to wooden beam