[Amps] Ts-940s linear relay

[k9mk at flash.net]

   Deja vous!   I repaired a guys amp relay TS-940S just last Sunday.  In this unit the amp relay was made by Omron and looks like it should be good for up to an amp.  The relay was actually fine, but was loosing its ability to pull in hard and make consistent contact.  When the relay would not key the amp, tapping the relay fixed it and the amp keyed.  So we dropped in a DPDT replacement and all was well.

   On a side note, the keying line relay driver is interlocked with the 7 pin DIN plug.  Also, there is no ground pin at that plug.  The amp ground return must go to the DIN barrel connector itself.  

73
Mike K9MK


-------------- Original message from "Carl" <km1h at jeremy.mv.com>: -------------- 


> Mine held up for years keying a SB-220 at 125VDC at 60 ma. Its still running 
> fine with other amps and always run in VOX mode for CW/SSB. The matching 
> TL-922 amp is also a current hog. 
> 
> Carl 
> KM1H 
> 
> 
> ----- Original Message ----- 
> From: "chuck" 
> To: 
> Sent: Tuesday, October 20, 2009 8:13 AM 
> Subject: [Amps] Ts-940s linear relay 
> 
> 
> > does anyone know what the relay on the ts-940s will handle for current?? I 
> > have 12vdc at ~150ma 
> > and I THINK its too much...or should I say WAS! 
> > 
> > I'll make a circuit tonight to switch it but ahem!! it maybe too late! I 
> > smelled bad things!!! 
> > 
> > 
> > ~chuck 
> > 
> > note * I see Rich Measures and a few other "mods" for this, I may put that 
> > into the radio this week, no more relays!!! 
> > 
> > 
> > 
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