Re: prog rock ge mastr exec ii
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The low pass filter kits from QRPLabs are very effective for making sine waves from the square wave outputs of the ProgRock.
Robin Midgett K4IDC
On Fri, Jul 5, 2019 at 1:18 PM Bob / WA1MIK <wa1mik@...> wrote:
I'm working on a similar project, but in my case it's an old Motorola Compa-Station (Motrac-based) on 10m and it uses phase modulation after the crystal, so a ProgRock should be a good substitute for a signal in the 7-10 MHz range. This station uses channel elements. I plan on removing the crystals and feeding the ProgRock into the channel element, using it as a buffer stage. I may need more gain and possibly some filtering to turn the square waves into something more sinusoidal (crystal-like).