[Elecraft] Bal[un] (was: Buddipole vs. tuner and wire)

[David Yarnes]

The BL2 (switchable balun) will handle 250 watts!  That should be enough.

Dave W7AQK


----- Original Message ----- 
From: "Robert Tellefsen" <n6wg at comcast.net>
To: "Brian Lloyd" <brian-wb6rqn at lloyd.com>; "elecraft Reflector" 
<elecraft at mailman.qth.net>
Sent: Tuesday, May 13, 2008 9:54 AM
Subject: Re: [Elecraft] Bal[un] (was: Buddipole vs. tuner and wire)


> Hi Brian
> I don't recall if you mentioned what power level you
> would be using with your K2.  If it is running barefoot,
> without the 100w PA, you could use one of the Elecraft
> switchable baluns.  They switch between 1:1 and 4:1
> ratios, giving you a good chance to match most balanced
> feeds.
>
> Even though the rig end of the line may be reactive, due
> to impedance mismatches along the line, the switchable
> balun can be used to reduce the amount of mismatch the
> ATU then has to to cope with.
>
> This makes a simple dipole with tuned feeders a nice
> multiband antenna.  On a given band, try both switch
> positions and see which one helps the ATU make the best
> match.
>
> Good luck and 73
> Bob N6WG
>
> ----- Original Message ----- 
> From: "Brian Lloyd" <brian-wb6rqn at lloyd.com>
> To: "elecraft Reflector" <elecraft at mailman.qth.net>
> Sent: Tuesday, May 13, 2008 8:37 AM
> Subject: [Elecraft] Bal[un] (was: Buddipole vs. tuner and wire)
>
>
>> OK, I am convinced - keep the tuner and the wire. So, that brings up
> a
>> second question: balanced vs. unbalanced.
>>
>> Wire antennas that do not require a counterpoise are usually loops
> or
>> dipoles, i.e. inherently balanced even if not resonant. Most tuners
>> offer an unbalanced output. SGC says, just connect up the antenna.
>> Seems to me that a balun would improve things and keep RF off the
> coax
>> and power leads to the tuner. But how well do baluns handle huge
>> mismatch?
>>
>> Just off the top of my head, it seems to me that the tuner at the
> top
>> of a pole with two legs sloped down, i.e. inverted-V, would make a
>> pretty good omni all-band antenna.
>>
>> More thinking aloud.
>>
>> Brian Lloyd
>> Granite Bay Montessori School          9330 Sierra College Bl
>> brian AT gbmontessori DOT com          Roseville, CA 95661
>> +1.916.367.2131 (voice)                +1.791.912.8170 (fax)
>>
>> PGP key ID:          12095C52A32A1B6C
>> PGP key fingerprint: 3B1D BA11 4913 3254 B6E0  CC09 1209 5C52 A32A
> 1B6C
>>
>>
>>
>>
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