You should be able to match it by adding additional capacitance to the rear
of the 238.
Like Jim, I always cut mine to about 3600 and have no trouble matching it
across the upper portion of the band with the 238B.
I've never tried to cut it high and match it lower.
If it doesn't match, add about 17 to 20 ft. of coax and then it most likely
will.
73
Rick, DJ0IP
-----Original Message-----
From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Steve Hunt
Sent: Monday, July 08, 2013 11:56 PM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] Tuner
At 3.5MHz, the SWR(50) of an 80m dipole cut for resonance at 3.8MHz could
easily be 12:1 or higher. Depending on the length of the coax, that can
present impedances at the tuner that will be well outside the matching range
of a 238.
Steve G3TXQ
On 08/07/2013 22:36, kb4srn@yahoo.com wrote:
> Thanks for the advice. The antenna is the old dipole fed with 8x coax. I
did have a doublet up that was fed with ladder line in the past and it was
great. Wife just doesn't like the idea of me cutting a hole in the wall to
get the ladder line out of the shack.
>
> My tuner matches great transmitting on 40 with the 80 band dipole. Where
I have the problem is tuning the dipole that is cut for 3800 down into the
CW portion of the band. I just can't seem to find the combination. I'll
try your suggestions and watch the meter closely as I may be missing the
sweet spot I'm looking for.
>
> Again, thanks for the advice.
>
>
>
>
>
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