Hot Switching

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  • Question
  • Updated 4 years ago
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I have been having problem with Hot Switching my amp ( ACOM) for last month or so. Problem appears to be related to using pin 4 of 15 pin connector ONLY. If I use CWX, I don't have a issue until well over 60 wpm. Also if I use my WinKeyer and utilize front panel key input I have no problem. When ever I use pin 4 of 15 pin connector I have a RANDOM hot switching issue. Is there something about using pin 4 input I missed in manual?

Another issue is I DON'T think TX REQUEST INPUT (INTERLOCK) works, anyone know for SURE this works in version 1.5.1.152 ?, 

I DON'T have issues between amp and other rigs. :)

73's
Lew
N4CO
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Lewis Cheek

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Posted 4 years ago

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Greg Johnson

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This has been a problem for me and my Acom also. Another reason the flex is not my go to rig. I can run a bug, a straight key and a paddle with the other rigs in the shack. I have used the lock and request features, but nothing helps at this time. I would enjoy a fix for this as well.

Greg ni8r
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Lewis Cheek

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Greg, as I stated it appears to be okay when I'm NOT using pin 4. ( I can't copy code at 60 wpm ) However, with a QSK amp like ACOM if TX REQUEST INPUT is working one should never hot switch.

FWIW: I NEVER had any issues between ACOM and K3. :)

Lew
N4CO
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WA2SQQ

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Lew, I have an ACOM 1000 and I don't have any problems at all. You mention using "pin 4" of the 15 pin connector. Is this how you key your amp? I just use an RCA cable from the TX out on my 6500, connected to my ACOM 1000. I'm sure I'm missing something.
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Clay N9IO

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Identical setup here with no issues ON a 6300 and Acom 1000. No delays set. RCA M-M cable. However there is one difference, I Don't do QSK.
(Edited)
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elan

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did you put a delay  let say 10ms as Acom advise me ?
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Lewis Cheek

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I did but no help with using rear cw input, something is not working as I think it should.
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Ned K1NJ

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    Maybe the delay settings work with the TX connectors, but have no effect with pin 4.

Ned,  K1NJ
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elan

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Why you use pin 4 if I may ask
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Lewis Cheek

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Keeps front of rig open and clean, plus easy place to connect hand key.
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Dave Dave

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Which flex you using, I know on the 6300 some pins are different then on the 6500 and 6700 .....
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Mack McCormick, Elmer

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Lew,

I'm not saying you don't have an issue but I can report that I use an Alpha 9500 and Acom 2000a on a Flex 6700 (SO2R), key from the rear HD15 connector, and use a WinKeyer without any hot switching issues with zero delay. Just a data point for you.

Vy 73,

Mack
W4AX
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Stan - VA7NF

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Curious - Does your WinKeyer exercise the PTT as well as the keying signal?  If so there may be a slight delay there.

I neither have an Alpha nor a WinKeyer - Just raising the question.

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Mack McCormick, Elmer

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I am not using a PTT output on the WinKeyer. The new alpha software has a feature that may help you. Let me know if that solves your issue when it is released.
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Lewis Cheek

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Just to follow up, I don't use PTT with cw, Adding delay and using pin 4 results in a hot switching condition. Using front panel input and adding 10 ms of delay appears to work, however it would be nice to not have those cables hanging off front panel of rig :).

Also, NO ONE has confirmed if TX REQUEST functions in current version of Smart SDR, functions. How about a yes/no we're working on it, changed our mind about it from Flex ? Seems like a simple question to answer.

Lew
N4CO
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rich

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Official Response

I have the exact same setup.  The FLEX delay on the keying default was something like 40 ms.  I increased this to 150 and the problem permanently went away.  Apparently, the ACOM needs a bit more time or you get a HOT SWITCHING ERROR.  GL, 73, Rich, K3VAT