[Elecraft] Tuning your radio and amplifier to your amtenna

[Jim Miller]

I always set my tuner first with only the radio into it and at 4 watts.
When it is good, increase the scale on the meter and enable the AL-1500Q amp
at 4 watts giving me 200 to 400 watts out and tune the amp and then tweek
the tuner if necessary.  4 in gives 400 out, 25 in gives 1500 out on some
bands - NO I am not going to start tuning at full power.

73, Jim KG0KP 

-----Original Message-----
From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Phil
Wheeler
Sent: Thursday, August 28, 2014 10:14 AM
To: jim at audiosystemsgroup.com; Elecraft Reflector
Subject: Re: [Elecraft] Tuning your radio and amplifier to your amtenna

Good point in the "On the other hand", Jim. I'm not sure the original poster
specified
KPA500/KAT500 or a 3rd party amp -- and it does make a difference.

Phil W7OX

On 8/27/14, 10:50 PM, Jim Brown wrote:
> On Wed,8/27/2014 9:22 PM, kd7gc wrote:
>> 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.
>
> Agreed. My Ten Tec Titans (a pair of triodes) drive with a bit less 
> than 50W. I have tune settings for each amp for each band on a yellow 
> sticky next to the amp, so I set those, then hit it with about 25W, 
> tweak, run drive to see close to 1500, and retune for maximum smoke as 
> indicated by the SWR/power meter. I tune with dits, so the duty cycle 
> is 50%, less stress than full power carrier, but gives me correct 
> tuning for full power.
>
> On the other hand, if you're tuning an auto tuner like the KAT500, you 
> want to tune it with drive power only, the amp off.
>
> 73, Jim K9YC

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