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Subject:
From:
Steve Dresser <[log in to unmask]>
Reply To:
For blind ham radio operators <[log in to unmask]>
Date:
Sat, 14 Jan 2012 22:08:24 -0500
Content-Type:
text/plain
Parts/Attachments:
text/plain (113 lines)
Scott,

I'm surprised that the radio doesn't have some sort of grounding lug or 
screw.  In most modern radios, the chassis itself is at ground potential, 
and if you have no other choice, you can just loosen a screw somewhere, wrap 
the end of the wire around it, and tighten it back up.  However, I advise 
that only as a last resort.

Steve

----- Original Message ----- 
From: "Dan B Dyer Jr,/Danny" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Saturday, January 14, 2012 15:30
Subject: Re: A QRP portable antenna and question


> you can atatch the counterpoise wire wound once and twisted around the
> outside/ground, sheald, whatever, of the BNC conector, or, for that 
> matter,
> if it's thin enough in diameter, you can atatch it to the outside of the 
> BNC
> conector on the radio itself, making sure the loop of wire is slid down 
> the
> outside of the bnc plug as far as it will go, then atatch the BNC conector
> with the 24 foot wire atatched to its' center pin , as you normally would,
> to the radio.  Even without a ground lug or screw or conection as such, on
> the radio, the outside of the BNC conector is, in fact, the ground side of
> that conector, and should work nicely.  HTH, Danny.
> ----- Original Message ----- 
> From: "Scott Howell" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Saturday, January 14, 2012 3:19 PM
> Subject: Re: A QRP portable antenna and question
>
>
>> Thanks gents.
>>
>> First the radio does not have a ground connector, this is an Elecraft =
>> KX1. David, when you say screen of the connector I assume you mean the =
>> outer portion of the connector correct? This is a BNC connector.
>>
>> THanks,
>> 73
>> Scott/N3BYY
>> On Jan 14, 2012, at 3:11 PM, Gerry Leary wrote:
>>
>>> I would connect to the ground terminal on the Radio.
>>> ----- Original Message -----=20
>>> From: "Scott Howell" <[log in to unmask]>
>>> To: <[log in to unmask]>
>>> Sent: Saturday, January 14, 2012 11:37 AM
>>> Subject: A QRP portable antenna and question
>>>=20
>>>=20
>>>> Hey good people,
>>>>=20
>>>> Well all this antenna talk got me thinking about an antenna solution =
>> for =3D
>>>> my KX1. I was reading a Q&A on the Elecraft site and they recommended =
>> a =3D
>>>> 24-foot piece of wire connected to the center of a BNC connector. =
>> THen =3D
>>>> you would attach a 16-foot piece of wire. However, what was not =
>> stated =3D
>>>> and what I wanted to know (not having put hands on this =
>> configuration) =3D
>>>> where do you connect the 16-foot piece of wire that is acting as a =3D
>>>> counterpoise?
>>>> Here is what Elecraft states on their site.
>>>> Q:  What's your favorite field antenna?  A:  A rotatable log-periodic =
>> at =3D
>>>> 100', fed with home-made ladder line. (Just kidding!) What we =
>> recommend =3D
>>>> in the KXAT1 manual for 40-20 m is about 24' of #26 insulated =3D
>>>> copper-clad steel antenna wire (available from The Wireman), used as =
>> a =3D
>>>> vertical or "sorta-vertical" radiator. You'll also need at least one =
>> =3D
>>>> ground radial, 16' or longer (more on that below). The wire can be =3D
>>>> tossed into a tree, or, if a tree is not available, supported by a =3D
>>>> portable mast or other support. The 24' length can be loaded on all 
>>>> =3D=
>>
>>>> three bands (20, 30 and 40 meters), and the wire itself weighs under =
>> 1 =3D
>>>> ounce. Performance of this antenna varies with wire length, height, 
>>>> =3D=
>>
>>>> ground characteristics, and the nature of surrounding objects, but in =
>> =3D
>>>> general will be much better than a short, loaded vertical, and may =3D
>>>> outperform a low-mounted dipole or inverted vee. Even on 40 meters, =
>> the =3D
>>>> 24' length will perform very well once matched by the tuner. A 33' =
>> wire =3D
>>>> length should be avoided since it's close to a half-wave on 20 =
>> meters. =3D
>>>> For 80 m, a resonant antenna is recommended. It should be possible to =
>> =3D
>>>> use an 80 m antenna on multiple bands. A loading coil is another =3D
>>>> possibility to get a shorter antenna running on 80 m.
>>>>=20
>>>> So, Just trying to figure out the best way to do this and input =3D
>>>> appreciated. Yeah I should be getting good at antennas before long =
>> since =3D
>>>> I have to put something together.
>>>>=20
>>>> Thanks,
>>>> 73
>>>> Scott/N3BYY=3D=20
> 

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