[Boatanchors] Power Out
David C. Hallam
dhallam at knology.net
Tue Nov 18 15:55:30 EST 2014
I too feel it's a matter of neutralization. But is it a matter of
driver or final neutralization? The driver is a pair of 6146's and the
final is a pair of 4-400A's. Since the finals are passive grid drive,
Johnson didn't include any neutralization circuit them. The plate
current difference is only about 5 mA @ 2100V.
I can check the driver neutralization without too much trouble.
On 11/18/2014 3:30 PM, Al Parker wrote:
> Hi David,
> If I understand the situation, it tells me that the neutralization
> of your final(s) is a bit off on that particular band.
> Unless it's a big difference (how big??) then most mfgrs say to
> tune for max output power, to reduce the power dissipation in the
> tube. Sounds like your "slightly" isn't a big dif.
> Al, W8UT
> "There is nothing -- absolutely nothing -- half so much
> worth doing as simply messing about in boats"
> Ratty, to Mole
> On 11/18/2014 1:23 PM, David C. Hallam wrote:
>> What is this telling me?
>> By tuning for maximum indicated CW power out I can get a slightly higher
>> reading on my plate amp meter when I tune for maximum indication on my
>> scope compared to the watt meter in my Collins station console.
>> Boatanchors mailing list
>> Boatanchors at puck.nether.net
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