[Elecraft] Tuning your radio and amplifier to your amtenna

[Charlie T, K3ICH]

Yeah, I just hate it when my 3CX6000 amp kicks out from too much grid drive.

Chas


----- Original Message ----- 
From: "kd7gc" <kd7gc at q.com>
To: <elecraft at mailman.qth.net>
Sent: Thursday, August 28, 2014 12:22 AM
Subject: Re: [Elecraft] Tuning your radio and amplifier to your amtenna


> Hello Jim,  In major part I agree with your suggested method for tuning up
> and amp, but I would never begin my tuning with an output from my
> transceiver of 4 watts.  I have never heard of anyone suggesting that 
> tuning
> should begin with anything close to 4 watts.  I generally go thru 3 or 4
> steps, but I start with my transceiver set to about 25 or 30 watts output.
> I bring my drive up in say 3 or 4 increments until I reach my desired amp
> output, usually in the range of about 60 or 70 watts of drive, at least 
> for
> smaller amps.  However, when I tune up my Henry 5K I don't exceed about 45
> watts of drive because I would already be over 1500 watts out.  At 70 
> watts
> of drive I would be running over 3KW, or 3.5 KW on 40 or 75 meters.
>
>
>
> HTH
>
>
>
>
>
> Alan R. Downing
>
> Phoenix, AZ
>
>
>
> From: hf4me [via Elecraft] 
> [mailto:ml-node+s365791n7592596h61 at n2.nabble.com]
>
> Sent: Wednesday, August 27, 2014 7:15 PM
> To: kd7gc
> Subject: Tuning your radio and amplifier to your amtenna
>
>
>
> Manual tuner - Manual amplifier:
>
> Or, any tuner and amplifier - tune with low power and radio only to start.
>
> I don't use "tune" unless I am using the internal tuner.  Set your tune
> power setting to 4 watts, place your amp in standby, press xmit (xmit 
> only,
> not tune) get your tuner properly adjusted, press xmit to release, turn 
> your
>
> power output down to 4 watts, enable your amplifier, place your radio in 
> CW
> mode, tune to a frequency CLOSE to where you want to transmit - NOT on top
> of other QSOs, use your CW key to cause the radio to transmit, tune your
> amplifier and refine your tuner settings, let off the key every few 
> seconds
> to not heat up everything, if your are happy with the current settings,
> increase your power out slowly as you watch it on each increase until you
> have achieved the output power you are looking for.
>
> 1 lower your output power
> 2 Transmit only a few seconds at a time
> 3 Find an unused frequency - close is plenty good
> 4 Tune with your radio without any amp
> 5 When happy, enable the amp
> 6 Adjust settings
> 7 Increase power slowly
> 8 Readjust if necessary.
> 9 Tune to your target frequency
>
> 73, Jim
>
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