[600MRG] The need to transceive

michael polia ab1aw at yahoo.com
Thu Nov 2 14:26:14 CDT 2017


Might be something useful at this site?http://www.joataman.net/radio_ham/info/qrpp_pa.htm

A small RF power amplifier uses a complementary 2N2907/2N2222 switching pair on the output to produce a squarewave with amplitude approximately equal to the power supply rail. 
73MikeAB1AW
      From: Roger Graves <ve7vv at shaw.ca>
 To: John Harper <johnae5x at gmail.com> 
Cc: 600 meter group <600mrg at w7ekb.com>
 Sent: Thursday, November 2, 2017 2:52 PM
 Subject: Re: [600MRG] The need to transceive
   
John,

I was hasty with my suggestion to look at the SoftRock 2N2222 driver stage. The input and output Z’s are not what you would need, so it would have to be re-designed. Plus, that stage is known to not have as good linearity as desired.  So I withdraw that suggestion.

Roger

On Nov 2, 2017, at 9:45 AM, John Harper <johnae5x at gmail.com> wrote:

> The transverter output on my Flex is 10-20 mW - the required RF level into
> my 630m amplifier is 150-500 mW.
> 
> Does anyone know of a schematic/kit of a low-level amplifier that would be
> suitable for raising the transverter's output to the required level?
> 
> -- 
> 
> John AE5X
> https://ae5x.blogspot.com
> _______________________________________________
> 600MRG mailing list
> 600MRG at w7ekb.com
> http://w7ekb.com/mailman/listinfo/600mrg_w7ekb.com


_______________________________________________
600MRG mailing list
600MRG at w7ekb.com
http://w7ekb.com/mailman/listinfo/600mrg_w7ekb.com

   


More information about the 600MRG mailing list