After completing my newest tower, 66 feet of Rohn 45, I added an 80 Meter Inverted V @ 62 feet. I'd like to find a quick way to switch between the CW and Phone portions of the band. I know I could ju
ON4UN's "Low Band DXing" had a dipole that presumably covered most of the band. It was partly made from coax. I haven't tried it myself. 73, Larry W6NWS After completing my newest tower, 66 feet of R
This is in the archives -> http://lists.contesting.com/_towertalk/2009-03/msg00487.html John KK9A After completing my newest tower, 66 feet of Rohn 45, I added an 80 Meter Inverted V @ 62 feet. I'd l
Thanks for all the great suggestions. Guess I've got some experimenting to do... K1ZO This is in the archives -> http://lists.contesting.com/_towertalk/2009-03/msg00487.html John KK9A To: towertalk@c
When he said his "newest" tower, I got the impression that there were other towers. If that's the case, the easiest way would be to build an 80ssb inverted-vee on another tower. Steve Guess I've g
There's an easy method to obtain a broadband match using transmission lines. Carefully tune the antenna for 3675 kHz. Feed it with a half wave, or a full wave, of 50 ohm line beginning at the antenna
I'd like to find a quick way to switch between the CW and Phone portions of the band. I know I could just set it for SSB and then add a short section to each leg for CW and that works for dedicated
Force12 does something similar with its rotatable dipole. Each side of the dipole went to box and had 3 coils in series to the feed point. There were 3 DPDT relays. Each side of the relay would short
I want try this broadband 80/75-Meter dipole someday when I get some support lines over a few of my tall fir tree branches. Originally in the April 1989 QST, reprinted in the NCCC newsletter: http://
Right, similar concept. This makes sense for a dipole that is shorter than a half wave, where you need loading coils anyway. I use switched capacitors with a full size inverted vee dipole (130 feet).
On 10/21/2013 10:17 AM, Richard Karlquist wrote: The advantage of this is that you get a really low SWR over the full band. Passive matching networks can only give you a mediocre match and only over
On 10/21/2013 11:46 AM, Richard Karlquist wrote: This makes sense for a dipole that is shorter than a half wave, where you need loading coils anyway. I use switched capacitors with a full size invert
I have been using the method that Jim mentions and it works very well and I can work almost the entire 80 meter band. Bill W5VX of the band. There's an easy method to obtain a broadband match using t
Try the Coaxial Resonator Match (AI1H) dipole. It has the double dip you are looking for and covers almost the entire 80M band. It is essentially an electrically OCF dipole made with coaxial cable. T
A fat fan dipole is really the way to go for simplicity if you are only interested in 3.5 to 3.8 with a VSWR less than 1.5 to 1 Herb, KV4FZ On 10/21/2013 2:58 PM, Jim Brown wrote: On 10/21/2013 11:46
ARRL has a broadband 80 meter dipole that was featured in QST. It is very very wide diameter cage instead of wire. I do not recall the bandwidth, but it was wide. As I understand, you can increase ba
Originally in the April 1989 QST, reprinted in the NCCC newsletter:http://www.nccc.cc/jug/2011/jug11jul.pdf This is a good design for use as a center-supported inverted Vee, where there isn't much me
trouble of designing and building the necessary hardware and running the control line. It has the additional advantage of no "excess I had some extra wires in the control cable for the SteppIR Yagi
Hi Doug, I use a 4-wire cage inverted vee that covers the ENTIRE 80m band quite nicely. There is a free program on smeter.net that can be used to design a cage dipole. Mine (24" diameter) supposedl
It's worth mentioning that Jim's method needs the dipole to be at a reasonable height - 40ft or more - to avoid having a low resonant feedpoint resistance. Once you go much lower than 40ft, and the r