[AMRadio] Johnson Match Antenna tuner

Geoff/W5OMR w5omr at w5omr.shacknet.nu
Sat Aug 7 13:14:24 EDT 2004

Subject: [AMRadio] Johnson Match Antenna tuner

> What is the proper adjusting procedure for using a Johnson Matchbox ant
> tuner..There are two controls..tuning and Matching...Which is adjusted first?
> es 73's Ron

Depends on which model you have.  If you have the one that has an SWR meter
into it, then you adjust both controls for minimum SWR (Reflected Standing Wave)

If it's the non-meter version, then you'll need an external SWR meter, connected
to the transmitter output, and the other end goes to the Impedance matching

The SWR meter used to indicate minimum Standing Wave Ratio at the TRANSMITTER,
is viewed when adjusting both controls, simultaneously, for minimum SWR reading
on the

73 = Best Regards,

More information about the AMRadio mailing list

This page last updated 18 Feb 2018.