
antenna construction - Is spacing of fan dipoles necessary?
Jan 27, 2021 · Consider this "mind experiment" for a limiting factor in the separation required for "Fan Dipole Radiators". Given a Fan-Dipole for 28MHz and 4MHz. Given a Effective Power …
3 Band (80-40-20 Meter) Fan Dipole Tuning Question
It is mostly tied to the 40 meter dipole, but on any fan dipole the elements do interact to some extent, so it can be a good idea to recheck the tuning on all bands periodically. The particular …
Fan dipole with loading coil (s)? - Amateur Radio Stack Exchange
Jul 24, 2019 · There seem to be plenty of construction articles on center-fed wire fan dipoles with pairs of arms of different lengths, each pair dimensioned for a different band (e.g. half-wave …
hf - Modelling a "fan dipole" or "fan inverted vee" using EZNEC ...
But here is the problem: when I create such an antenna with the inverted vees from different bands physically far apart, I get a good result (low SWR in desired part of band), but when I …
Fan dipole radiation pattern - Amateur Radio Stack Exchange
Nov 13, 2018 · Two fan dipoles will interfere if one of the dipoles is resonant on both bands. Unfortunately, 144-148 times three is 432-444 so a 1/2WL dipole on 2m will be a resonant …
Transition Point Between Fan and Cage Dipoles
Apr 29, 2017 · For example a fan dipole might be designed for 20, 17, and 15 meters. A cage dipole is more like a single, very fat dipole with the insides of the conductors removed. All of it …
Using a balun with a resonant dipole - Amateur Radio Stack …
A dipole is a particular machine for creating EM fields. The idea is to set up a voltage between the two halves of the dipole in such a way that an EM field is created and efficiently radiated away. …
What kind of wire would be good for a 160m - 40m fan dipole?
Oct 20, 2021 · I want to know the best copper wire or tinned copper wire for a fan dipole for 160, 75, 40 meters. It would be coax fed and I would like it to handle 1500 watts or more. I would …
Which matters most in a fan dipole: Overall linear length or actual ...
Feb 1, 2016 · (unique to fan dipoles) interaction of the multiple wires in the "fan" As such, the extra inch or two of wire introduced by a droop in the wires isn't going to introduce any …
antenna - Multi-wire EFHW? - Amateur Radio Stack Exchange
Sep 17, 2020 · Some antenna designs use multiple parallel elements like this. For example, fan dipoles. Or, as you can see the Butternet HF9V has a couple parallel wires hanging off it in the …