[Amps] Drake L4B to 6 Meters Help

[gudguyham at aol.com]

Like I said, self bias is for cut off bias not operating bias.  Cut off bias is one thing and operating bias is another. The self cut of bias mod doesn't change operating bias.  It only does because someone told you to add operating bias as part of the mod.  
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-----Original Message-----
From: Michelle <michelle_melt at windstream.net>
To: amps <amps at contesting.com>
Sent: Mon, Dec 12, 2016 08:59 PM
Subject: [Amps] Drake L4B to 6 Meters Help




From: <a href="mailto:gudguyham at aol.com">gudguyham at aol.com</a> 
Sent: Monday, December 12, 2016 6:46 PM
To: <a href="mailto:michelle_melt at windstream.net">michelle_melt at windstream.net</a> 
Subject: Re: [Amps] Drake L4B to 6 Meters Help

If hams have been running Drake L4 and L4B amps since the early 70's or perhaps before with the L4 at zero bias, why all of a sudden you want to idle the thing down just because it is for 6 meters?  Too low idle current requires more drive from the exciter and you get less power for a given drive. NOT WHAT YOU WANT TO DO IF YOU ARE LOOKING TO SQUEEZE MORE POWER OUTPUT.
>>> This was the “self” cut off bias mod, which I’ve done on all 3 of my L4B’s not just the 6 meter one and had no issues before. I understand this is a different kind of beast and plays by some different rules, I am learning slowly. Thank you for your input Lou, I will make some adjustments to the self cut off bias to raise the idle current<<<
Michelle  




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