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Re: [Flexradio] SDR-1000 w/ Ameritron AL-811h Tunning Help

K9DUR
Thu, 12 Nov 2009 12:07:57 -0800

Craig,

I do not have the exact combination you are asking about, but I have an
Ameritron AL-572B amplifier that I used with my SDR-1000 before I upgraded
to the FLEX-5000A.

Get a DB-15M connector, an RCA phone plug, & some 2-conductor wire and make
a cable to have PowerSDR handle keying the amp.  When making the cable,
connect the center pin of the RCA phono plug to pin #7 of the 15-pin
connector, & connect the shield of the phono plug to pin #15 of the 15-pin
connector.  Plug the 15-pin connector into the X2 connector on the rear of
the SDR-1000 and plug the RCA phono plug into the "Relay" jack on the rear
of the AL-811H.

In PowerSDR, click on Setup==>General==>Options.  Check the box labeled
"Enable X2 TR Sequencing" and set the X2 Delay value to 20ms or greater.
Click on the "X2TR" button on the main screen so that it is highlighted.

Now, when youtransmit or when you push the Tune button on PowerSDR, the amp
will be keyed.  Adjust the power output while in tune mode to the level you
want to use to tune the amp.

You can actually leave the amp in the "Operate" position and enable/disable
the amp with the X2TR button.  However, for safety's sake, I always switched
the amp itself to "Standby" when I wanted to run barefoot or when I changed
bands.

73, Ray, K9DUR
http://k9dur.info





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