Is the 6600 corruptible from power loss?

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  • Updated 5 months ago
The idea is simple. I can remotely switch the power to my 12 volt supply. This will cause the radio to turn off. At the same time the Dow-Key relay will default the antenna port into the dummy load. This will protect the radio from weather. This raises two questions.

1.     Will this corrupt the firmware or programming in the 6600?

2.     When I switch the supply back on will the radio start? my 6500 would not, I would have to be on location to restart it.

Thanks for the help. Dan KM6CQ

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KM6CQ - Dan

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Posted 5 months ago

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Craig - KØCF

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The 6500 power on/off is fully remotely controllable. There is an input on the back labelled "REM ON". To use this, you must enable "Remote On" on the SmartSDR Radio Setup dialog "Radio" tab.

To turn the radio on, apply 13.8 v to the radio, then short this connector. To turn the radio off, remove the short from "REM ON", wait about a half minute, then remove the 13.8 V.

I use a cheap 110V operated SPDT relay by Digital Loggers, available from Amazon for about $8, and a WiFi power strip with 4 independently controlled outlets (about $30 at Amazon). The relay comes with a standard power cord which plugs into the outlet strip. The 13.8 V power supply is plugged into another outlet on the strip. The WiFi power strip has iOS and Android apps available to control it.

This is all in the manuals, but not easy to find.

73,
Craig, KØCF
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Tim Ellam

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"I use a cheap 110V operated SPDT relay by Digital Loggers, available from Amazon for about $8, and a WiFi power strip with 4 independently controlled outlets (about $30 at Amazon)."

Craig to you connect the DL relay directly to the REM jack? 

Tim VE6SH

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Craig - KØCF

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Yes, The "Normally OPEN" and "common" terminals on the relay connect to an RCA audio cable, which plugs into the "REM ON" jack on the radio. Shield to one terminal, center conductor to the other. Polarity doesn't matter.
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Tim Ellam

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Thanks Craig. I was not clear if the relay could be connected directly to the jack.

73

Tim

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KM6CQ - Dan

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Hey thank you Craig. I sold the 6500 to fund the 6600. So I hope it is the same with the 6600. 

Dan
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Tim - W4TME, Customer Experience Manager

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It is.
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George Molnar, KF2T, Elmer

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I’d caution against using the 12 V supply as the on-off switch. Pressing the radio switch, or using the remote jack, allows for an orderly shutdown and state memory. Leaving the power connected also keeps the TCXO or GPSDO running, improving frequency accuracy and stability. Finally, switching at the power supply can potentially lead to odd conditions brought on by low voltages (as the output decays) and/or transients on power-up.


Yes, it will “work,” but the better way to remotely turn things on and off is by using the remote jack and a network-controlled relay. For safety and peace of mind, it’s not bad to have a remote power supply disconnect, but don’t use it to turn the rig on and off.
(Edited)
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Tim - W4TME, Customer Experience Manager

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This is sage advice.
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Mark - WS7M

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Agree with George.  Cycling the 12V is a last resort if things are hung.  I have the ability to toggle first the Rem on/off.  If that doesn't work then I can power cycle the 12v remotely.
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Tim - W4TME, Customer Experience Manager

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+1
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Greg - N8GD

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I have an 8 outlet Digital Loggers unit that I have programmed to power various radios in the shack (I also have another one for computers).  I know it is preferred to shut down my 6300 via the remote jack on the radio, but I have been powering my radio up and down via the 120 VAC application to the 13.8 VDC supply feeding the radio.  This has happened on a daily basis for at least two years and I have never had any ill effects from it.  I also use the DL unit to remotely power cycle the 6300 if needed.  SSDR/DAX/CAT are never running at power down.  If powering down this way can cause problems, I can attest that it hasn't at this QTH.  Maybe I'm just on borrowed time!