I had a 229 TT kit tuner that I did same capacitor replacement..
To make the job a bit easier, I took out the screws holding the roller
inductor and variable capacitor to the bottom cover, put a folded towel on
top of the inductor and capacitor to keep them from moving and installed the
tuner's top cover.
Then I flipped over the tuner and took off the bottom cover. The area I
wanted to work was easily accessable.
--------------------------------------------------
From: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Sent: Tuesday, July 03, 2012 4:44 AM
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Subject: Re: [TenTec] 229 swr circuit
> With my 238 tuner I too experienced issues with observed SWR drifting at
> higher power values, but only under certain antenna configurations.
> Conclusion, the 220pf capacitors wired parallel and associated with the Hi
> Z
> and Lo Z switch were getting hot, thus changing values. I replaced each
> pair with a Russian made 470 pf 2KV doorknob style capacitor. These can
> be found on E-Bay for a nominal price.
>
> Mounting was accomplished by drilling holes through the bottom plate in
> the
> area of the original capacitors. It is a tight place to work but with a
> little planning the result is a very nice professional job.
>
> Problem solved.
>
> 73
> Bob, K4TAX
>
>
> ----- Original Message -----
> From: "David Cuttler" <davidcuttler@yahoo.com>
> To: <tentec@contesting.com>
> Sent: Monday, July 02, 2012 11:30 PM
> Subject: Re: [TenTec] 229 swr circuit
>
>
>>I own a 229 tuner, and I have never used the meter. If it ever died, I
>>wouldn't care because it is of limited use. I would recommend finding a
>>good external meter that will read CW & PEP like the Ameritron AWM-30
>>which
>>is what I use, and forget about the 229 meter.
>>
>> Of more importance are the crummy disc capacitors in the tuning circuit.
>> My tuner would not hold a setting, and the swr would drift all over when
>> used on the lower bands until I replaced all of the the disc caps with
>> Russian door knob caps that I purchased off Ebay. Now my 229 tuner is
>> rock
>> steady, and I have not had any issues with it after the modification.
>>
>> If your antenna does not need a tuner, then you will be happy with the
>> 229
>> as it is built, but if you are using antennas that are far from 50 ohms
>> like my doublet that is fed with 450 ohm window line, the 229 in the
>> factory configuration is a lousy piece of equipment.
>>
>> The meter is more bother than it is worth, unless you are like me, and
>> need to have everything working correctly just because it's there!
>>
>> Sorry for the rant.
>>
>>
>>
>>
>>
>> _______________________________________________
>> TenTec mailing list
>> TenTec@contesting.com
>> http://lists.contesting.com/mailman/listinfo/tentec
>>
>
>
> _______________________________________________
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>
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