[TenTec] Titan 425 & TT Transceiver QSK

[Steve Baron - KB3MM]

What is robot relay ?

----- Original Message ----- 
From: "elstar-mt" <elstar at elstar.fi>
To: <tentec at contesting.com>
Sent: Wednesday, November 05, 2003 05:51
Subject: [TenTec] Titan 425 & TT Transceiver QSK


> I wish to exchange experience on TT QSK.
> When I had Corsair II and Paragon with 425 , QSK was perfect.
> Between dots and dashes the big and slow Vacuum relay was silent and got
> active
> only between words on over 250 mS abt. cap on keying.
>
> On Omni VI and Orion I have problem on QSK.
> K4 / Vacuum relay is activating on every dot and dash keeping voice and
> life time is getting shorter that way.
>
> I have connected KEYing Loops with two RCA as in Instruction manuals and
> tried even
> 3rd RCA cable on VOX/PTT -  AMP1
>
> Original Relay K4 and my modification relay makes same.
> I have changed Vacuum relay to faster and more silent "robot relay"  which
> takes
> only 20% of delay compared to vacuum relay and is also more silent.
> Vacuum relay is sensitive for cool hamshack  ( below 50 F ) .
>
> I have done self QSK amplifier using 4CX1000A / same output as from Titan
> and
> QSK I made with same "robot" type relays  ( 1,85- 1,90 mS / release
> 2,0-2,25 )
> It was perfect.
> Using Tetrode , it´s quite easy.
>
> I wish your experience and advise ; Mark OH3LX.
>
>
> _______________________________________________
> TenTec mailing list
> TenTec at contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>