Semantics.
I learned yet another meaning of the word doublet.
I think we agree that the word "dipole" alone means a half wavelength
radiator, fed in the middle.
We 300 Ohm is used as Jim described, I have always referred to it as a
folded dipole, even though real folded dipoles have the two horizontal wires
spaced farther apart.
Whenever a random length of wire was fed in the middle, I called it a
doublet.
So a dipole is always a doublet but a doublet is only a dipole when it is
exactly a half wavelength long.
I have often used the word doublet when working with openwire fed antennas
because they are often not cut to a specific half wavelength some band.
I'm not saying my way is correct, but that's what the boys called them 50
years ago in the Texas/Oklahoma neck of the woods.
73
Rick, DJ0IP
-----Original Message-----
From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Richards
Sent: Tuesday, October 15, 2013 8:40 AM
To: k9yc@arrl.net; Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] Antenna is up, but the coupler doesn't like 160 meters
Mike told us what he has.
The ARRL Antenna Book defines "doublet" as
synonymous with "dipole," but I understand
many hams intend the locution "doublet" to refer
to a type of dipole fed with open line to
facilitate tuning it on multiple bands using
a matchbox/tuner device.
Based on what Mike already said:
His doublet is approximately .5 wavelength on 160 meters, consisting of two
identical 131 ft long conductive bilaterally symmetrical elements made of
metal wires, with opposing voltages, fed with 170 ft (+/-) of
600 ohm open transmission line.
N'est ce pas ?
-------------------- K8JHR -----------------
On 10/15/2013 2:11 AM, Jim Brown wrote:
> On 10/14/2013 2:52 PM, Mike Bryce wrote:
>> The antenna is a doublet
>
> Please define what you mean by a "doublet." When I started in ham
> radio
> 58 years ago, that was a dipole made out of 300 ohm twin lead, with
> one side broken at the center and connected to another piece of 300
> ohm line that went to the shack. Is that what you have?
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