[Amps] Peter Dahl / Harbach SB-220 transformer

[Carl]

>
>
> In a message dated 6/11/2010 7:10:20 A.M. Eastern Daylight Time,
> jim.thom at telus.net writes:
>
> ##   It works good on 80-40- 20-17-15-12-10m.    Heck, it even works very
> good
> on SB-220's... that have been modified for 6m.
> I actually stopped directly grounding the grids on my 6 meter conversions
> to limit the power output (like a governor) once I was able to obtain
> 1500PEP  output with indirectly grounded grids.  In the beginning when I 
> was
> looking  for that "missing" power I would purposely ground the grids to 
> boost the
> gain  and the power.  But later when I refined everything and found other
> ways to  obtain the power, I left the grids indirectly grounded. It is
> actually quite  surprising the additional gain you get from directly 
> grounding the
> grids.
>
> Lou
>

I guess Jim doesnt understand that more RF places more stress on an already 
marginal bandswitch Lou to say nothing about increased gain can result in 
instability as proven in many amps.

Some like to go for the most meter wiggle and the heck with reliability(-;

Carl
KM1H