[GreenKeys] RS-232 to Polar Relay

[John W9DDD]

I'm having an idea that may be considered heresy.  I have a couple extra line relay assemblies.  Looks like there's enough open space on the plate to mount a DE9 connector for the RS232.

John, W9DDD


> On Jan 16, 2023, at 7:09 PM, "til128 at juno.com" <til128 at juno.com> wrote:
> 
> If Jack didn't put one there, it didn't need one. LOL
>  
> FWIW, I have been running one like that for about 10-12 years 24/7 with no problems.
>  
> TT
> 
> ---------- Original Message ----------
> From: Jeffrey Golas <jeffg at junknet.net>
> To: til128 at juno.com
> Cc: tomhenryhunter at gmail.com, greenkeys at mailman.qth.net
> Subject: Re: [GreenKeys] RS-232 to Polar Relay
> Date: Mon, 16 Jan 2023 19:13:13 -0500
> 
>  
> Shoudnt there be a snubber diode in line with the relay- serial port?
>  
> Jeff KC3GJX
> 
> On Jan 16, 2023, at 3:33 PM, til128 at juno.com wrote:
> 
> Is the attached what you remember?
>  
> This was from Jack Hart (SK).
>  
> Tom Tillson
> 
> ---------- Original Message ----------
> From: Tom Hunter <tomhenryhunter at gmail.com>
> To: GreenKeys at mailman.qth.net
> Subject: [GreenKeys] RS-232 to Polar Relay
> Date: Mon, 16 Jan 2023 13:37:41 -0500
> 
>  
> 
> John,
>  
> A while back someone (and I cannot remember whom, because he deserves the credit.) Mentioned that a polar relay can be driven directly by an RS-232 output. Think about it, it is really a polar signal.
>  
> I am kicking myself because I never thought of something so obvious.
>  
>  
> Tom N3CRK
> <Polar-NeutralConvertor.jpg>
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