Insides of HF tuner MJF-941 or similar

Insides of HF tuner MJF-941 or similar

Post by Kenneth Carriga » Fri, 01 Nov 1996 04:00:00

Doing some plasma experiments with 28 MHz ISM band
and would like to know what components are needed
to match 50ohm linear to plasma unit.  Would an MRF-941
unit do it?  Is this just a T network with one adjustable
inductor (coil) and two caps?

What is the tuning impedance range at the antenna port
with a 50 ohm signal input?  .1 to 1000 ohms?

Thanks Ken

 
 
 

Insides of HF tuner MJF-941 or similar

Post by John Rabso » Sun, 03 Nov 1996 04:00:00




Quote:> Doing some plasma experiments with 28 MHz ISM band

                                     ----------------

Isn't 28 MHz an amateur-only allocation?

73 de G3PAI

 
 
 

Insides of HF tuner MJF-941 or similar

Post by Kenneth Carriga » Sun, 03 Nov 1996 04:00:00





> > Doing some plasma experiments with 28 MHz ISM band
>                                      ----------------

> Isn't 28 MHz an amateur-only allocation?

> 73 de G3PAI

I'm using the CB band specifically which I believe is ISM band.
27.15 MHz, the medical community uses this for diathermy.

Anyway, the question is How about a matching circuit?  I'll
only be using a 250 Watt amplifier but desire about 1000volts
into an Argon gas to ignite it.  A faraday cage will also be used
as to NOT radiate this energy.