Pixel RF30C preamp

dxradio33 All Messages By This Member #21269 Good morning out there.? ?I have a Pixel loop and the amp has lost all gain, although RF still makes it through but without any gain.? Does any one know of a source for a schematic of this amp?? I have exhausted every resource that? I can think of but to no avail.? I can fix this guy but I need a road map. Thanks Joe K8FC
Edward All Messages By This Member #21273 开云体育 Contact DX Engineering. They now own the design.? toggle quoted message Show quoted text On 21 Apr 2025, at 6:55?AM, dxradio33 <k8fc@...> wrote: ? Good morning out there.? ?I have a Pixel loop and the amp has lost all gain, although RF still makes it through but without any gain.? Does any one know of a source for a schematic of this amp?? I have exhausted every resource that? I can think of but to no avail.? I can fix this guy but I need a road map. Thanks Joe K8FC
Steve Ratzlaff All Messages By This Member #21278 For general info, this preamp was designed by Jack Smith K8ZOA (now SK); I built the first 25 of them for him. The preamp is a nominal +30 dB 50 ohm in/out preamp with a balanced Norton input followed by a balanced bipolar output. (I have contacted Joe privately about a schematic.) 73, Steve AA7U

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