Re: [Elecraft] Using your tower as a vertical - 160 or 80

2017-03-01 Thread Erik Basilier
Rich, Thanks for your reply; very helpful! Something similar to your shunt feeding method is what I have had in mind. Since my tower is a crankup (55 ft topped by about 22 ft of mast+antennas), I do have some misgivings about managing the wire running parallel to the tower, in the scenario

Re: [Elecraft] Using your tower as a vertical - 160 or 80

2017-03-01 Thread Rich - K1HTV
Erik, I've been feeding K3 RF to my house bracketed, 75 ft Rohn 25 tower for years with great success on 160 Meters. The tower is topped with HF and VHF yagis which act as a capacitive top hat. The 50 Ohm coax feedline is connected to a tap on the coil of a parallel tuned circuit. The top of

Re: [Elecraft] Using your tower as a vertical - 160 or 80

2017-03-01 Thread Alan Bloom
, February 28, 2017 11:09 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Using your tower as a vertical - 160 or 80 I use two of the top guy wires as an inverted vee. There are insulators near the top of the guys and about 50 feet or so down. The vee is brought to resonance on 80 meters

Re: [Elecraft] Using your tower as a vertical - 160 or 80

2017-02-28 Thread Erik Basilier
Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Alan Bloom Sent: Tuesday, February 28, 2017 11:09 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Using your tower as a vertical - 160 or 80 I use two of the top guy wires as an inverted vee

Re: [Elecraft] Using your tower as a vertical - 160 or 80

2017-02-28 Thread Alan Bloom
I use two of the top guy wires as an inverted vee. There are insulators near the top of the guys and about 50 feet or so down. The vee is brought to resonance on 80 meters with a center-tapped loading coil, which also acts as a balun. The best match was with the coax tapped right about at

[Elecraft] Using your tower as a vertical - 160 or 80

2017-02-28 Thread Erik Basilier
Years ago, after putting up a heavy-duty crank-up tower with several antennas on a tall mast at the top, I was interested in loading up the whole metal tree for 160 and/or 80. However, I didn't like the prospect of transmitted power getting back into the shack via the existing feedlines, causing