[TowerTalk] Was "43ft Vertical Feeding Question and Balun Type"

[Richard Thorne]

With the CG tuner you would have to take the amp off line manually, then 
key your rig so a tune cycle would take place.  I'm sure the tuner 
instructions state to do this at low power 10-20 watts.  Most modern 
rigs reduce the power when they see a high swr, so you normally wouldn't 
have to reduce the power manually.

Once the tuner is tuned you could hit the amp operate/standby switch and 
start running with high power.

I would probably forget to turn the amp off in the heat of the moment, I 
would rather the tuner interrupt the ptt line so tuning is totally 
automatic.

Rich - N5ZC

Richards wrote:
> I am a rookie at all this... so please be patient.   I thought the 
> instructions
> to the tuner said you have to reduce power to the antenna-tuner and
> tune with like only 5-10 watts of power, and then put the power back
> up.   I guess you are saying you would have to take the amp off line
> or tune it way low, and then tune the antenna... and then either put the
> amp back on line, or re-tune the amp up to power each time you
> re-tuned the antenna.
>
> Is there something I am missing here?
>
> ==============  Richards - K8JHR  ===================
>
> Richard Thorne wrote:
>> The only problem I can see with this tuner is not having the ability 
>> to break the PTT line between the rig and amplifier (confirmed by 
>> Array Solutions).
>>
>> A high power tuner should operate like the SGC-500 or the 1500 wat 
>> MFJ auto tuner.  When a tuning cycle begins it should interrupt the 
>> ptt line to the amp so it can tune under low power, then when the 
>> tuning cycle is complete, allow the ptt line to key the amp.
>>
>
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