On 9/22/97 7:18 PM, AE0Q V31RY at firstname.lastname@example.org wrote:
>>>> I believe that most MFJ tuners use the T network and TenTec uses a
>>>> swtichable L network. L networks are know for their low loss while the
>>>> losses in T networks can be quite high.
>>>We're getting into an area I don't know about- I thought the MFJ used
>>>the same circuit the ARRL handbooks show as the SPC transmatch, known as
>>>PI network? Go ahead, I'm learning!
>>No, it uses a T network. This is a very common circuit. (I think the SPC
>>uses the same)
> Bill, the Ultimate Transmatch circuit (which is what a Murch UT-2000 is)
>and the SPC are not T-match circuits. They have an extra capacitor section
>going to ground, the UT/Murch has it at the input, the SPC has it across the
>inductor. But they aren't T circuits like most MFJ tuners.
Mea cupla -- you're correct.
T-match and Ultimate match (and I assume the SPC) circuits do tune in a
Bill Coleman, AA4LR, PP-ASEL Mail: email@example.com
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