One correction:
TL922 cooling is compromised.
The socket of the 500Zs do not get sufficient air flow.
Phenomena: the solder inside the filament pins melt.
Cure: just re-solder but add a fan.
73,
Jukka OH6LI
> -----Original Message-----
> From: cq-contest-bounces@contesting.com
> [mailto:cq-contest-bounces@contesting.com]On Behalf Of ext
> George Harlem
> W1EBI
> Sent: 05 September, 2004 16:12
> To: Chris Tran ZL1CT; cq-contest@contesting.com
> Subject: Re: [CQ-Contest] Advice about HF amplifiers
>
>
> You'll get every Z-based amp in response to this! The
> Kenwood TL-922 meets
> all your criteria. It's built like a brick outhouse and has
> great cooling.
> Without QSK, though, it's not every op's contest amp.
>
> 73, George W1EBI
>
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