[TenTec] Eagle Tuner

[Bob McGraw - K4TAX]

I'll be building and putting up a folded dipole for 160M.  Wire spacing will 
be about 3" to 4" and the feed will be 300 ohm line as it provides a better 
match than 450 ohm or 600 ohm line.

I do have an use a folded dipole for 75M made entirely out of 300 ohm line. 
Works great.  Measurements show the center impedance at the height I have 
the antenna to be about 230 ohms thus is a good match for 300 ohm line.  It 
terminates into a 4:1 balun which give me about 1.2:1 SWR at the lowest 
point {3.8 MHz}  and about 2.2:1 at band edges.  No tuner required for 
entire band coverage.

One thing I've clearly noticed about folded dipoles, the one I have on the 
tower is noticeable quieter, 1 to 2 S units, than the 75M dipole fed with 
coax on the same tower at approximately the same height.  Now there may be 
some lobes that favor noise source, typically NW as that's where the storms 
originate, or slightly null to the noise source as the antenna are about 60 
degrees apart, broadside.


73
Bob, K4TAX





----- Original Message ----- 
From: "Rick - DJ0IP / NJ0IP" <Rick at DJ0IP.de>
To: "'Discussion of Ten-Tec Equipment'" <tentec at contesting.com>
Sent: Monday, September 08, 2014 11:34 PM
Subject: Re: [TenTec] Eagle Tuner


> Good idea, Bob. That must be what he uses.  Otherwise he would need a 
> tuner.
>
> But it would have to have the wires spread quite a ways apart; using 450 
> Ohm
> window line for the radiator wouldn't cut it.
>
> A sleeve dipole might also work, but I haven't tried that one yet.
> I don't have the space here to put either of these up.
>
> 73 - Rick, DJ0IP
> (Nr. Frankfurt am Main)
>
>
> -----Original Message-----
> From: TenTec [mailto:tentec-bounces at contesting.com] On Behalf Of Robert
> Sent: Tuesday, September 09, 2014 1:18 AM
> To: Discussion of Ten-Tec Equipment
> Subject: Re: [TenTec] Eagle Tuner
>
> A true folded dipole fed with open wire line and a 4:1 balun used as it is
> supposed to be used.
>
> Bob, K4TAX
>
>
> Sent from my iPhone
>
>> On Sep 8, 2014, at 3:35 PM, "Rick - DJ0IP / NJ0IP" <Rick at DJ0IP.de> wrote:
>>
>> Hmmm, I'm curious as to what kind of antenna you use on 75/80m?
>> My antenna won't cover the entire 500 kHz without a tuner, and the
>> Eagle's tuner works just fine for that.
>>
>> 73 - Rick, DJ0IP
>> (Nr. Frankfurt am Main)
>>
>> -----Original Message-----
>> From: TenTec [mailto:tentec-bounces at contesting.com] On Behalf Of John
>> Farler
>> Sent: Saturday, September 06, 2014 10:02 PM
>> To: tentec at contesting.com
>> Subject: [TenTec] Eagle Tuner
>>
>> The first thing I do when turning the Eagle on is to turn the internal
>> tuner off!!
>>
>> Date: Sun, 7 Sep 2014 18:54:51 -0700 From: Mike Stricker via TenTec
>> <tentec at contesting.com> To: "tentec at contesting.com"
>> <tentec at contesting.com>
>> Subject: Re: [TenTec] Eagle AT slow? Message-ID:
>> <1410141291.31839.YahooMailNeo at web125301.mail.ne1.yahoo.com> 
>> Content-Type:
>> text/plain; charset=us-ascii
>>
>> Perhaps that is why Ten Tec has included it in their Eagle sale:-) And
>> that is why having a built in antenna tuner adds no value to a radio,
>> in my opinion.
>>
>> All kidding aside, the only AT that worked properly for as long as I
>> owned it was the one in the
>> _______________________________________________
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>
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