[Milsurplus] T-47/ART-13 into 50 ohm load

mac w7qho at aol.com
Sat Mar 23 13:21:49 EDT 2013


For 50 ohms I use fixed shunt caps, 400pf for 75/80 meters, 200 for 40  
and 100 for 20.  A 400pf variable would cover the whole range, of  
course.  Range of adjustment inherent in the ART-13 tank circuit os  
very wide, I can load into 50 ohms FB on 75M with only my 200pf  40M  
shunt switched in for ex. and conversion articles I've seen over the  
years list shunt cap. values all over the lot.  Never tried a UnUn....

Dennis D.  W7QHO
Glendale, CA

************
On Mar 23, 2013, at 9:00 AM, WA5CAB at cs.com wrote:

> How well does a T-47 (or equivalent) match a 50 ohm resistive load  
> on say 3
> to 10 MC?  Is there any standard outboard "fix" like an UnUn or shunt
> variable capacitor?  Purpose would be to feed a remote antenna tuner.
>
> Robert Downs - Houston
> wa5cab dot com (Web Store)
> MVPA 9480
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