[600MRG] The need to transceive

[Roger Graves]

John,

Which amp do you have? I have a 25W one that as supplied requires 500 mW drive, if the 6dB attenuator were removed it would be 250 mW, if the 1:1 input transformer were replaced with a stepup design (mosfets have high input Z on 630) I think it might get down to 25 mW. So you might not need an extra amp stage if your amp is similar.

The SoftRock RXTX uses a 2N2222 for the driver stage, you could look at the schematic of that for ideas and see my mod for a MF/LF transformer design. 
http://qsl.net/v/ve7vv//Files/RXTX LF-MF Modification.pdf
73,
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
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