Re: µBITX & QRP labs 50W PA

MadRadioModder
 

Ah ok….

 

Well if it’s “Class C” it’s not gonna work for SSB.  The only way to change that is to bring it to at least “Class AB2”… by reducing the bias and allowing the device more resting current.  That generates a lot more heat (because the devices are conducting more of the time) so the cooling needs to be increased.   You can make it happen but it’s gonna take some work.

 

 

From: BITX20@groups.io [mailto:BITX20@groups.io] On Behalf Of iz oos
Sent: Thursday, December 12, 2019 11:24 AM
To: BITX20@groups.io
Subject: Re: [BITX20] µBITX & QRP labs 50W PA

 

Nice to know. I don't think it can be used for SSB as it is a class C amp unless some mods are done. Looking forward to seeing Allison's reply

 

Il 12/dic/2019 17:49, "Arvo W0VRA via Groups.Io" <arvopl=yahoo.com@groups.io> ha scritto:

Anybody considering using a QRP Labs 50W PA with their µBITX?

http://qrp-labs.com/50wpa

There's no band switching yet.


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