Amps hooking to mfj993b antenna tuner

Tintotty

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Jul 27, 2021
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2
does anybody know how to hook up a mfj- 993b automatic antenna tuner to a 300 linear amp?
 

alcahuete

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Jul 24, 2015
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Antelope Acres, California
Not sure what you mean by hook up.

Radio is connected to input on the amp. Output on the amp goes to the Transmitter port on the MFJ-993b. Antenna port on tuner goes to your antenna.
 

prcguy

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Jun 30, 2006
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So Cal - Richardson, TX - Tewksbury, MA
The tuner has various interface cables for Yaesu, Icom, Alinco, Kenwood and other popular amateur radios. With the interface cable it should tune the antenna when you push the tune button on the radio. For other radios I think it can be set up to tune automatically when the match is above a certain point but you would not want to tune with the amp on, tune at lower power then turn the amp on after its done tuning.
 

merlin

Active Member
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Jul 3, 2003
Messages
874
Location
South East Idaho
You will want the installation guide. that explains the connections for tuning.
Basically the tuner uses low power (a few watts) tunes quickly then you can switch in any amplification.
Uses the 'tune' button on most radios set up for 'AT'.
 
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