[TenTec] Titan II with Russian 4CX1600 - dd response to grid voltage

[Jeff (W4DD)]

I dont have the spec sheet availble right now, but if the 4cx1600 is like
the 4cx800, isnt the standby bias around -150v.


On Apr 28, 2017 11:35 PM, "Wes Attaway (N5WA)" <wesattaway at bellsouth.net>
wrote:

> Do you know that the tube is good?
>
>    -------------------
> Wes Attaway (N5WA)
> (318) 393-3289 - Shreveport, LA
> Computer/Cellphone Forensics
> AttawayForensics.com
>    -------------------
>
> -----Original Message-----
> From: TenTec [mailto:tentec-bounces at contesting.com] On Behalf Of Dukes
> HiFi
> Sent: Friday, April 28, 2017 10:11 PM
> To: Discussion of Ten-Tec Equipment
> Subject: [TenTec] Titan II with Russian 4CX1600 - dd response to grid
> voltage
>
> I have a Titan II, with a just-completed Russian 4CX1600 tube installation.
>
> It generally works, produces significant output.
>
> However, even at standby the plate current is about 600 mA and DROPS
> slightly when I key the amp.
>
> The amp IS keying properly as I can hear the relay.
>
> Screen current remains within limits when driven to about 1000 watts
> output.
>
> So does the grid current.
>
> Grid voltage in standby is ~-100 V, ~-60 when keyed.
> Screen voltage is always 300 Volts when in Operate mode, keyed or unkeyed.
>
> Anyone seen this happen before?
>
> Gary
>
> W0DVN
>
>
> _______________________________________________
> TenTec mailing list
> TenTec at contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>
> _______________________________________________
> TenTec mailing list
> TenTec at contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>