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TX signal asserted during TUNE output
I'm going to check this when I get a chance after work, but is the TX signal asserted when the Flex 6300 is keyed using the TUNE button in SSRD 1.3.8? I'd like to use TUNE to tune my external Auto tuner, but don't want to key the amp.
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Answers
Unfortunately not all the high power tuners do this and your stuck with going into standby manually
73's
Bret
WX7Y
Back when I had a SB220 and I was driving it with a TenTec Pegasus, I built a SPDT center off switch into the key line. In the center off position, the key line was open - I could use that for tuning the tuner. In one position, the rig controlled the key line and in the other position, the key line was closed - I used that position for CW since the Pegasus only did QSK and the SB220 didn't support that.
The above Tuners have 2 (TWO) RCA female jacks one for AMP Key Input which goes to your Radio and one for AMP key output that goes to the AMP.
Sounds like your on the right track and both of the above tuners work great configured this way.
73's
Bret
In Semi-Auto mode you have to hit Tune on the radio then hit tune on the Tuner,
You may have trouble using Full Auto Mode with it re-tuning if your Antenna changes impedance for some reason during a conversation like Antenna's hung in Tree's, or to small a Balun for the power your using ect.
hope this helps put your mind at ease.
73's
Bret
WX7Y
I've had the MFJ-998 (indoor version) for about 4 years. It lives outside in a wx proof cabinet under the center of my doublet. LMR-600 goes between it and 100ft to the shack along with a pair of wires for the 12v power to the rig's Astron on the desk with an off/on switch. This is important when something goes wrong and a reset is needed.
Sitcky Tune works great. I just send it 20 watts by pushing the tune button in SSDR and away it goes.
I have the Elecraft KPA-500 amp on line. Of course I make sure the amp is in standby/bypass mode when hitting the tune button otherwise the amp will kick in fault mode and make a big fuss. It's happend a few times but it's designed to handle situations like that.
I think you will enjoy the 998.
In my case, I first and ran a tune cycle on each band with low power from the xcvr to set the memories. I then set ddutil to key the xcvr for 2-3 secs at a specific power level, putting the amp in standby during that period.
This isn't perfect, because I would much rather have an output that says "the tune cycle is complete" and if it found a match or not, then use this to determine what to do next. It also requires that Tune be initiated from ddutil rather than clicking Tune in SSDR. To somewhat overcome this limitation, I set the center button on the FlexTune control to start this cycle when I do a long hold of it.
You can probably use the switching option from the 998 to act as a "Tune Complete and OK" signal that can then be fed to an RS-232 port (or some variation) setup for signaling input. This would be better than a timed cycle.
This works well for the most part, as long as I don't use the tune button in SSDR.
How did you get DDUTIL to initiate a tune, but not key the amp?
Thanks,
Mike WJ7U