[Amps] Asynchronous coax matching transformer

Carl km1h at jeremy.mv.com
Fri Jul 31 18:13:20 PDT 2009


Thats the one guys, thanks.

Carl
KM1H


----- Original Message ----- 
From: "Joe Subich, W4TV" <lists at subich.com>
To: "'Carl'" <km1h at jeremy.mv.com>; <amps at contesting.com>
Sent: Friday, July 31, 2009 8:42 PM
Subject: RE: [Amps] Asynchronous coax matching transformer


> 
> Try Google for "1/6 wave transformer:" 
>   http://www.k1ttt.net/technote/matching.html 
> 
> 73, 
> 
>   ... Joe, W4TV 
> 
> 
> 
>> -----Original Message-----
>> From: amps-bounces at contesting.com 
>> [mailto:amps-bounces at contesting.com] On Behalf Of Carl
>> Sent: Friday, July 31, 2009 8:23 PM
>> To: amps at contesting.com
>> Subject: [Amps] Asynchronous coax matching transformer
>> 
>> 
>> Does anyone remember the formula for matching 50 to 75 Ohms 
>> with 2 very 
>> short lengths of coax?
>> If I remember it used a 75 Ohm section at the output of the 
>> amp, and a 50 
>> Ohm section to the CATV hardline. Frequency dependent of course.
>> 
>> Its been about 25 years since I built one.
>> 
>> Carl
>> KM1H
>> 
> 
>


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