[600MRG] ScopeMatch tuning aid for lower bands

[communicatorman at comcast.net]

   HI Guys, I use a RigExpert, for checking SWR and every thing its designed to operate down to 100Khz-1Gig 

    works well and has smith chart, TDR also.. no modes needed.. 




    W7IEW CN87MC  10m BCN

> On March 18, 2019 at 10:25 AM Ken Roberson via 600MRG <600mrg at mailman.qth.net> wrote:
> 
>         Antennas for the 630 Meter band are not the easiest thing to build, for one thing thereis limited equipment to test for resonates and impendence.
>         The ScopeMatch is a tuning aid for the lower bands (2200 and 630 Meters) and within my budget.
> 
> 
>         Iuse a modified MFJ-259B to get the antenna in the ball park, then theScopeMatch will get the antenna right on the money.
>         TheScopeMatch antenna tuning aid is used to monitor the voltage and current at theoutput of the Power Amp.
> 
> 
>         When the voltage and current sine waves are equal in amplitude and are in phase theantenna is properly tuned
>         andmaximum power will be radiated. You can also use the ScopeMatch to calculate the TPO (transmitter power out)
> 
> 
>         One volt peak to peak from the ScopeMatch equals 50 volts p-p. Formula is P= (vpp)squared /400 this assumes you have a 50 ohm load.
>         Example: If your O-Scope reads 4.0 volts peak to peak, multiply 4X50 = 200 and 200squared is 40,000/400 = 100 watts.
> 
> 
>         I dedicate a 10 mhz 2 channel Pico 2204A USB computer O-Scope to the ScopeMatch and it is displayed on a 7 in LCD monitor.
>         This allows me to monitor the antenna match at all times.
> 
> 
>         More info about 630 Meter station, Antenna,Tuner and 100 watt Power Amp at: k5dnl dot com
>        
>         73 Ken K5DNL
> 
> 


 

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