Using transmitter profiles to control amp vs. no amp

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I have an Acom 1010 amp that I like to use for FT8, on occasion. The problem that I had was after warm up, the amp came on in Operate mode.  So I had to stop using FT8 while I waited for the warm up to complete. (Yes, the piggy bank is slowly collecting dollar bills for a solid state amp.) I was thinking about how I could modify my ARB704 to add an enable/disable switch.

Then "the light went on." as I had a Homer Simpson moment.

I could enable or disable the TX1 keying line in a transmit profile as well as set the appropriate power levels .  (The protection on the Acom is fantastic and prevented several smoke releases as I learned to keep track of all of the settings).  So I have a "XMT No Acom" TX profile for barefoot use with the power out set to 100 and TX1 disabled. I use this during the Acom warm-up. I also have an "XMT Acom" profile that enables TX1 and sets the power down to 20w that I use when the amp is ready to go. 

This profile pair could also be used to handle an external tuner.  Click "XMT No Acom" and "trigger" the external tuner.  When the tuner is done, click "XMT Acom" and everything is on line, ready to go.

Comment about FT8 power levels...  I use PSKREPORTER to monitor my received signal strength and I adjust my power to stay around -15 db in the region that I am trying to reach.  I also have a 3 minute watchdog timer.

Logan, KZ6O
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Logan, KZ6O

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Posted 4 months ago

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David Decoons wo2x, Elmer

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Take a look at DDUtil and its Auto Drive feature. Set up Auto Drive to the power out you want per band to drive the amp. Then click the box that says Amp follows DDUtil PTT.

Now on the mail DDUtil screen when the indicator is yellow STBY the TX1 line will be disabled and radio set to 100watts (or whatever you set in DDUtil for barefoot power per band). When you click the yellow STBY indicator it turns to green OPER. The TX1 line is enabled and power is adjusted down to level needed to drive amp.

In Auto Drive you can set amp 1 for normal operation (100watts barefoot and full oitput with amp on) and then set up amp 2 for drive levels for FT8 (both with and without amp). You can toggle between amp 1or amp 2 settings.

Dave wo2x
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Logan, KZ6O

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Dave, thanks for the suggestion.  I'm in a "minimalist mode" right now and trying to keep the ancillary software to a minimum.  I've seen DDUTIL mentioned frequently in the community however, the Flex is the only thing under computer control in my station, right now.  I will keep DDUTIL in mind for the future, however.
Logan, KZ6O
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Bill Garfield W1BG

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I have to agree with Logan; KISS method. I too am trying to hold ancillary software to a minimum at least until I become more familiar with the 660M and its idiosyncrasies. I also have an Acom-1010 and thus am well aware of the issue at hand.