I have copied Ron's mod into a single PDF document and posted it (with Ron's
permission) on my website.
In case some of you (like me) wish to keep these instructions for future
use, you can download it from my download page.
It is download #6.
Here: http://www.dj0ip.de/downloads/
TNX RON!
73
Rick, DJ0IP
-----Original Message-----
From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Mike, K9UW
Sent: Saturday, October 12, 2013 7:44 PM
To: Clayton Brantley; Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] Antenna is up, but the coupler doesn't like 160 meters
Try http://n6ie.com/Ten_Tec_238.html
73, de Mike, K9UW
Amherst, WI
On 10/12/2013 12:15 PM, Clayton Brantley wrote:
> Sorry guys. I am using Yahoo and they are going thru a downgrade in
> their services. They have went from a working system to something a
pre-schooler would dream up.
>
> Here is a link to the web site for the 229/238 tuner mod:
>
> www.n6ic.com/Ten_Tec_238.htm
>
> Hope this works, if not simply Google TenTec 229 mod and you should see
it.
>
> Clayton N4EV
>
>
>
>
>
> On Saturday, October 12, 2013 1:06 PM, Rick - DJ0IP / NJ0IP
<Rick@DJ0IP.de> wrote:
>
> THAT'S THE PROBLEM, MIKE! (the Chinese have smaller feet than we do)
>
>
> -----Original Message-----
> From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Mike
> Bryce
> Sent: Saturday, October 12, 2013 5:59 PM
> To: Discussion of Ten-Tec Equipment
> Subject: Re: [TenTec] Antenna is up, but the coupler doesn't like 160
> meters
>
> bob and the gang,
>
> inserted the 259 and with the 1:1 balun.
>
> resonate freq is 2.487 or there abouts
>
> so the antenna as it sits is too short.
>
> I'll re-check the length with my harbor freight made in china 300 foot
> tape and see what each leg is (length wise)
>
>
> Mike Bryce, WB8VGE
> the heathkit shop
> SunLight energy systems
> J e e p
> o|||||||o
>
>
>
>
>
>
> On Oct 12, 2013, at 10:42 AM, Bob McGraw - K4TAX wrote:
>
>> The extra / external cap is used across the capacitor bank, starting
>> at
> position #4 and #5. Both on the Low and High Z sides. I find the
> text is incorrect, the schematic is correct. Yes a .01 is way too
> much C by a factor of 10x.
>> If you have a means to do so, what is the natural resonant frequency
>> of
> the antenna? I use my MFJ-259 as a grid dip meter effect to find the
> resonant frequency. I'm not speaking of some frequency where the SWR
> is 1:1 or such.
>> I take a different approach to antennas. I first start with a
>> resonant
> antenna at the desired frequency, then adjust the height of the
> antenna to attain the desired feed point impedance. I saw Jim Brown,
> K9YC mentioned this in his earlier post as he used different coax
> impedance lines dependant on the height of the antenna. I am not one
> to "prune" the length of the antenna for some SWR value. Now in cases
> I know we can't get the antenna at different heights specially as we
> get to 160M and to some extent 80M. In these cases, the typical
> height above ground does bring the center Z to 20 to 30 ohms. Nothing
> wrong with this. With low loss coax or a balanced feed, just let the
> tuner deal with it. That's what it is supposed to do. I find having
> a resonant wire is more effective and easier to effect a good match.
>> 73
>> Bob, K4TAX
>>
>>
>>
>>
>>
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