Flex 6000 amplifier delay

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  • Updated 3 years ago
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Having problems with both my Alpha 9500 and ACOM 1500 along with my Flex 6500.
The ACOM 1500 was reporting ARC and Hot Switching error messages.

When I plugged in my Kenwood 990 to the same Amps,  all worked as it should.

I assume I need to add some delay in the TX setting?   

Anyone out there have a similar experience?

r/Mike
WB0O
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WB0O

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Posted 3 years ago

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Lewis Cheek

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Same issues until I used BOTH keying lines, didn't need any delay. One of those two lines needs to be either active HIGH/LOW depending on your amp.

Lew
N4CO
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Lewis Cheek

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Tx req and any of the tx keying lines, just select one you're using. Tx req is either a high or low depending on amp requirement. If you're not sure, select one then disconnect the tx req line and see if Flex is passing rf, if not then you have selected proper value ( high/low ). Reconnect cable and you'll be ready for full high speed break in operation. I didn't find info in manual for Acom 1500 or Alpha 8410 as to high or low state. I don't use any delay and have no issues.
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Craig - KØCF

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See page 105 of the current SmartSDR Software Users Guide. TX REQ is an inhibit input from the amplifier.

73,
Craig, KØCF


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Jay / NO5J

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Lewis

Thank you, I accidently selected the correct high\low state the first time, later I broke it by messing with it. Maybe now I can get it working again. Your explanation makes a lot more sense than my vague methods. For some reason, I have difficulty leaving well enough alone.

 SDRgadgets

73, Jay - NO5J

(Edited)
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WB0O

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Still trying with my ACOM 1500:  I have installed the 2 RCA cables, so now I also use the TX REQ connection on the Flex.  I have tried both Active Low and Active High.   I still get a Hot Switching Error.
I have even tried putting in a 20ms delay, and still get a hot switching error.       I have no problem with the Amp and my Kenwood 990.   Any other ideas?
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Lewis Cheek

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If all works as it should with your 9500 ( I think you stated you had one ) and not the Acom, I would check all the phono jacks/plugs on the Acom.

I had a ACOM 600 ( new, not used ) that had a bad solder connection on one of the phono jacks. FWIW: I tried two new ACOM 600 and never did have any luck running qsk cw with them.

I had this problem with a early release of SSDR and never did get it working until I updated with new release. Never was able to put my finger on just what problem was, however hot switching never returned as issue. Search on hot switching might locate my prior posting. As I stated before, I can run either Alpha 8410 or Acom 1500 with Flex at speeds of 100 wpm, full power without issue.

I know it's a PITA, however you may want to save your profiles and remove and reload SSDR. Has you Flex ever worked with your amps ?

Good Luck
Lew
N4CO
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W0JD

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The ACOM 600S wants a little delay to be happy, checking the Flex config I run 20ms.

Jay
N0IAI
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Mack McCormick, Elmer

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Change the RF delay to 10 ms and increase from there ic needed.

Mack
W4AX
Alpha Tester
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WA2SQQ

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My Acom 1000 uses the default delay, of 20 or 25. Amp keying line is connected to TX1