[Amps] 8122 op temp in NCL-2000 amp

[Fern]

It will work with any amplifier. It's controlling the idle current.  Fern


----- Original Message ----- 
From: "Peter Voelpel" <df3kv at t-online.de>
To: <amps at contesting.com>
Sent: Saturday, March 14, 2009 12:56 PM
Subject: Re: [Amps] 8122 op temp in NCL-2000 amp


Hi Fern,

Sure those are for use with grid driven AB1 tetrodes?

73
Peter

-----Original Message-----
From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On
Behalf Of Fern
Sent: Samstag, 14. März 2009 19:21
To: Frank T Brady; amps at contesting.com
Subject: Re: [Amps] 8122 op temp in NCL-2000 amp


Hi Frank:  Your amp certainly looks like a perfect candidate to install an
electronic vox biasing board to drop that needless high idling current to
almost zero Ameritron has those boards available at a very reasonable price.

Fern




>I operate SSB with my NCL-2000 only to chase 'new ones'.
> While doing this on 17m I noticed that the top lid above the tubes was
>awfully hot.
> The high temperature persisted in SSB mode even if I wasn't transmitting.
> SSB uses approx 2800v and idle current is 200 ma.
> I put a digital thermometer on the lid above the tubes and recorded
>some
>
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