[Amps] TenTec Titan 425 Idle Grid Current

[Vic K2VCO]

Grid current with no drive isn't normal. It isn't a question of bias. Try just shorting 
the amp key line without the transceiver connected. If you get some grid current, either 
the amplifier is unstable (unlikely) or a tube is going bad.

Probably you will not see any, which implies that the grid current was caused by the 
transceiver generating some RF -- possibly from hum, etc.

On 9/25/2012 5:35 PM, Mark Robinson wrote:
> I noticed today on my TenTec Titan 425 that the grid idle current is around 7 or 8mA on
> the Ig meter. I see this on the amp when I key my TS930S in ssb with no drive.
> (modulation).  I don't recall seeing this before. Is this normal or is there a bias
> issue that I should look at?
>
>
> 73 Mark N1UK _______________________________________________ Amps mailing list
> Amps at contesting.com http://lists.contesting.com/mailman/listinfo/amps
>

-- 
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/