[GreenKeys] Western Electric 314A line relay

[Bob Camp]

Hi

Serial ports are still out there. 

Look at the “low end” PC’s they make for things like retail terminal 
applications. There are a surprising number of them with real serial ports
out the back. The higher end stuff dropped 9 pin’s out the back long
ago. The cheap stuff still has it. (or at least they did the last time I looked ..)

Even the higher end motherboards often have a serial port buried somewhere. 
You need to get a cable and bracket to bring it out to the world. That’s not quite 
as cheap or easy as it should be. This of course assumes you buy a retail
motherboard and build up from there. Most computer OEM’s cut every nickel
and dime they can on motherboards. 

Bob

> On Feb 26, 2017, at 10:04 AM, Jack <wa2hwj at att.net> wrote:
> 
> By the way….
>  
> I have wired up a 314A as a “poor man’s RS232-to-loop converter”
> by putting the coils in series and connecting them directly to the RS232
> port on my PC (for Heavymetal). Then the polar relay keys your loop
> and TTY. Of course, try to find a PC with a real serial port these days!
>  
> Jack K2TTY
>  
>  
>  
>  
>  
> From: GreenKeys [mailto:greenkeys-bounces at mailman.qth.net] On Behalf Of Lester Veenstra
> Sent: Sunday, February 26, 2017 9:53 AM
> To: 'Nick England' <navy.radio at gmail.com>; 'Greenkeys' <greenkeys at mailman.qth.net>
> Subject: Re: [GreenKeys] Need info - Western Electric 314A line relay - TP 304997
>  
> What do you need to know; form an fit, the same as WE255.  Probably faster and more sensitive for polar, not that we see long polar circuits any more.
>  
> Lester B Veenstra  K1YCM  MØYCM  W8YCM   6Y6Y
> lester at veenstras.com
>  
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> From: GreenKeys [mailto:greenkeys-bounces at mailman.qth.net] On Behalf Of Nick England
> Sent: Saturday, February 25, 2017 5:24 PM
> To: Greenkeys
> Subject: [GreenKeys] Need info - Western Electric 314A line relay - TP 304997
>  
> I have several of these but no info beyond they are mercury-wetted relays. Are they the same function and pinout as the 255A ? Can someone please point me to a datasheet? 
> 
> Thanks
> Nick England K4NYW
> www.navy-radio.com
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